Absoluteblack premium bolt covers are designed specifically for Shimano 110/4bcd Dura-Ace 9000 cranks.Simply put, these bolt covers for DuraAce cranks make your crank look even better with AbsoluteBlack or Rotor Oval chainrings. When you switch to Absoluteblack oval rings, you create a small step down at the connection point between crank arms and chainring bolt hole area.These bolt covers fix this making your crank look great again.Weight: 13g
absoluteBLACK Premium Shimano 110/4 bcd compatible oval chainrings are designed for new type of Shimano cranks Dura-Ace 9100 & Ultegra 8000 only. These are finest oval chainrings on the market in terms of shifting, smoothness of pedaling and manufacturing quality. (They can be also retrofitted to 9000 and 6800 cranks).Size (Mass +/-1g):34T (31g), 36T (37g), 38T (41g), 39T (42g), 50T (120g), 52T (137g), 53T(139g) Compatibility:Shimano Dura-Ace 9100, R9150 Di2 and Ultegra 8000, R8050 Di2. They can also retrofit 9000 and 6800 cranks but use bolt covers for best appearance.Bolts:For Outer chainring please order "Long bolts" from us OR Bolt CoversChanging Inner chainring to oval only? use original boltsMaterial & Finis:CNC machined 7075 Txxx Aluminum. Long-lasting construction. Type II anodizingOvality:Optimized to each size separately. 34T- 6.5% ; 36T, 38T, 39T- 11.4%, 50/52/53T - 10-11.2% ; Timing of 108 -110.5° after TDC (top dead center) - Ideal for road climbing. Patent PendingIMPORTANTRamps on big rings are specially configured for combinations: 50/34, 52/36, 52/38, 53/39T If you wish to use other configuration it will also work, but shifting will be slower and may require more "adjustments" of front dérailleur to be acceptable. Also remember that front dérailleur can only accept max 16T difference between 2 chainrings - this is how Shimano and Sram designed them.Advantages of Absolute Black Road Oval chainrings:One of a kind special oval shape that helps you climb easier and faster (Patent Pending),Over 15% stiffer than Rotor Qrings due to thicker, 5mm construction,Bespoke Absolute Black 6 point ramp and recess shifting design shifts better than any other brand and model of oval chainring,Finest design that provides excellent strength to weight ratio,You will not "feel" the oval shape while pedaling,Your pedaling action will feel smoother,Helps reduce stress on knees and helping your legs remain fresher for longer,You will be able to maintain better cadence while climbing,Reduces possibility of leg cramps,You will reduce chainring/cog shifts by at least 15%.What size should I choose?34T inner chainring should be used with 50T outer ring. It has 6.5% ovality. Use a 34T to help with spinning higher cadence and hilly terrain.36T inner chainring can be used with 50 or 52T outer ring. It has 11.4% ovality. Use a 36T if you’re a strong rider or for rolling terrain.38T inner chainring should be used with 52T outer ring. It has 11.4% ovality. Use a 38T if you’re a very strong rider or for flat terrain.39T inner chainring should be used with 53T outer ring. It has 11% ovality. Use a 39T if you’re a very strong rider or for flat terrain.50T outer chainring – Choose this size if you ride for pleasure or sportive events. This is the most versatile and comfortable size.52T outer chainring - if you race and feel strong, it's the classic outer chainring size and a great option for experienced riders.53T outer chainring - if you race and feel very strong, it's the classic outer chainring size and a great option for powerful riders.Remember when selecting your chainring sizes - it's not about what others use, but about ensuring YOUR ability to maintain a comfortable and effective cadence across the terrain you ride most often. If you ride chainrings that are too large (round or oval), your cadence will be lower. This can affect your performance by prematurely tiring your legs and possibly lead to stress injury in your knee joints.Shifting quality and technologyBoth, inner and outer oval chainrings are optimized with smooth shifting in mind. This is why the back of the Absolute Black Oval road chainring does not feature cutouts, like other oval products on the market. Instead, we design smooth angled surfaces, to help chain to slide quickly and precisely between chainrings. Absolute Black outer oval chainrings have 6 up-shifting ramps, for easy and quick gear change, even under load. Each outer chainring also features 12 down-shifting points. Instead of steel shifting pins we use a CNC machined "ramp and recess" solution. Special raised ramps work in conjunction with the tooth recesses to stabilize the chain when shifting. Our oval chainrings DO NOT require any modification to the front dérailleur in order to work properly (apart from small standard adjustment)Why our oval chainrings workOur premium Oval chainrings work because riders do not produce power evenly through a pedal stroke –the musculature of human legs makes it difficult to maintain an even power delivery to a round chainring. Believe it (or not), but a round chainring doesn't transfer torque to your rear wheel as smoothly as an Oval one. Oval rings work with the natural human physiology. Oval chainrings maximize the part of the stroke where power is produced and minimize resistance where it isn't. As a direct consequence, Oval rings enhance a cyclist’s ability to spin with a smoother power delivery and feel easier on legs while climbing. You will actually feel your pedal stroke to be more "round" with an Oval chainring than with a round chainring.Why using AbsoluteBlack oval chainrings mattersAbsolute Black oval road chainrings deliver power more smoothly to your rear wheel. This means you are better able to generate and maintain, constant cadence. Because oval chainrings reduce the peak loads on knee joints, riders using them get less stress on the joints (knees) and therefore are able to keep certain level of effort for longer. This results in higher average speed. You don’t need to take our word at Absolute Black; 11 scientific studies by leading universities around the globe show that; in comparison to round chainrings, when using oval chainrings, human legs utilize more muscle groups - but each of them to lesser degree. The overall Load from pedalling an oval chainring is spread over greater muscle mass. This has three key benefits; firstly, it gives you the feeling of fresher and more relaxed legs. Secondly; it allows you to achieve higher average speed riding uphill. Thirdly; spreading the pedalling load over more muscles reduces the risk of cramp, even when riding hard. The compound effect of switching to oval chainrings; the relaxed legs, added climbing ability and reduction of cramp means your overall enjoyment of the ride is enhanced.Why our Oval chainrings do not have adjustable timingAt Absolute Black we have extensively studied the relevant performance data regarding the optimum percentage of ovality, shape and, critically, the timing of the oval – the positioning of the high and low points of the oval, in relation to the position of the crank arm and focus this into one single mounting position – this is the really important part of what makes Absolute Black Oval chainrings so effective. By simplifying our oval chainring design, to reflect a single high performance ‘sweet-spot’, we are able to make the process of fitting Absolute Black oval chainrings faster and easier, as well as making our rings even lighter.
Our premium 1X Rotor 76bcd compatible Oval chainrings are designed for Rotor REX cranks with their original 1X spider. They are lighter and stiffer compared to the original chainring due to one optimized mounting position only. This enabled us to develop better performing chainring with super smooth pedaling sensation.Size (Mass +/-1g):30T (44g), 32T (49g), 34T(58g)Compatibility:All ROTOR REX cranks with Rotor 76bcd spider (Not compatible with Sram 76bcd cranks) 9, 10, 11 and 12spd Eagle compatible.Material:CNC machined 7075 Txxx Aluminum. Long-lasting construction. Mud optimized.Chainline:Perfect 49mmOvality:Optimized to each size separately. Range: 10.2-14.4% and Timing of 110.5-116.3° after TDC (top dead center) Patent PendingAdvantages of our oval chainrings:Finest design to provide excellent weight to strength ratio,Lighter than original Rotor chainrings.,One of a kind special oval shape (Patent Pending),Greatly improves traction and climbing abilities,Unique Patent Pending alternate wide and narrow teeth profiles to keep your chain in place for minimum 12 months!,Special 3D teeth machining for ultimate mud relief decrease wear and noise dramatically,Superb quality and great look.,You will not "feel" the oval shape at all,Reduces stress on knees,Only one chainring position. We optimized this chainring for best performance, so adjustable timing is not needed making the installation easy ..What to expect when moving from Rotor chainring to absoluteBlack oneAlmost all of our customers who tried Rotor before and now are using absoluteBlack, claim absoluteBlack chainrings deliver smoother pedaling sensation and allow them to pedal harder for longer. This derives from the fact that both companies have different objectives when designing the chainring. We focus on producing super smooth pedaling sensation that translates to higher cadence, increased speed, less stress on the knees and less tired legs after long ride. Rotor from the other hand focuses their efforts on theoretical gains in power and design their products with this in mind. While power gains are still not proven to this day; smoother pedaling is and you will be able to feel it yourself.How to mount Rotor compatible Oval chainring:It's very simple. You need to mount absoluteBlack chainring exactly the same way as you did with your original Rotor ring. There are four torx bolts that needs to be unscrewed. Remove old chainring and put new one in. Mount the screws back.The most advanced, Patent Pending alternate wide and narrow teeth profile currently produced, guarantee minimum 12 months of excellent chain retention capabilities! We mean it. Always use a new chain with a new chainring.It is ideal for 1x 9/10/11/12 system and Singlespeeds!. Oval (elliptical) chainring does not compromise the work of clutch mechanism in rear derailleur(video at the bottom). It also does not require chain tensioner when using in singlespeed application. Riding out of saddle on the uphill will become more pleasant. These chainrings also help you to recover after knee injuries as pedaling becomes smoother and less exhausting. It is the most advanced oval chainring currently on the market.Chain options:10, 11 or 12spd chain for geared bike or 6-8 spd for SS. If used in 1x9 drivetrain - 10spd chain must be used to obtain the performance. (yes - 10spd chain will work great on 9spd cassette)Chainguide needed?No. But if you want one then chain guide should have 2 teeth more capacity than nominal oval ring size.
The name speaks for itself. AirBreaker – a road helmet made for perfect ventilation and aerodynamics. The AirBreaker makes no difference whether you are fascinated by high mountains, long distances or high speeds. Outstanding ventilation, best aero data and a weight you barely feel makes the AirBreaker your top model in every race. Keeping a cool head for all high performances. Endless distances and four-digit elevation gain, incredible speeds and hot asphalt. Your day on the bike knows no limits. Sounds like dream conditions for you – for the AirBreaker as well. On its home turf the AirBreaker will convince you. Extreme conditions demand for the best material to rely on. The AirBreaker provides perfectly balanced head climate and an airflow that feels like tailwind. At any time, in any terrain, in any position. Whether ventilation or aero, weight or safety, the AirBreaker offers top features with the highest ABUS standard. Thanks to ActiCage lite -an integrated structural reinforcement- the AirBreaker provides maximum protection with minimal weight. The Floating Padding ensures optimal comfort. Thanks to the flutter-free FlowStraps, adjusting the helmet is nearly a thing of the past. AirPort is a true aero miracle: special temple channels let you safely and aerodynamically store your glasses in the helmetThe name speaks for itself. AirBreaker - a road helmet made for perfect ventilation and aerodynamics. The AirBreaker makes no difference whether you are fascinated by high mountains, long distances or high speeds. Outstanding ventilation, best aero data and a weight you barely feel makes the AirBreaker your top model in every race. Keeping a cool head for all high performances. Endless distances and four-digit elevation gain, incredible speeds and hot asphalt. Your day on the bike knows no limits. Sounds like dream conditions for you - for the AirBreaker as well. On its home turf the AirBreaker will convince you. Extreme conditions demand for the best material to rely on. The AirBreaker provides perfectly balanced head climate and an airflow that feels like tailwind. At any time, in any terrain, in any position. Whether ventilation or aero, weight or safety, the AirBreaker offers top features with the highest ABUS standard. Thanks to ActiCage lite -an integrated structural reinforcement- the AirBreaker provides maximum protection with minimal weight. The Floating Padding ensures optimal comfort. Thanks to the flutter-free FlowStraps, adjusting the helmet is nearly a thing of the past. AirPort is a true aero miracle: special temple channels let you safely and aerodynamically store your glasses in the helmet’s rear. The Zoom Ace system guarantees a perfect fit, precisely adjustable with a grippy wheel. A specially shaped slot within the adjustment system gives plenty of space to long hair and makes the AirBreaker ponytail compatible. s rear. The Zoom Ace system guarantees a perfect fit, precisely adjustable with a grippy wheel. A specially shaped slot within the adjustment system gives plenty of space to long hair and makes the AirBreaker ponytail compatible.
The name speaks for itself. AirBreaker – a road helmet made for perfect ventilation and aerodynamics. The AirBreaker makes no difference whether you are fascinated by high mountains, long distances or high speeds. Outstanding ventilation, best aero data and a weight you barely feel makes the AirBreaker your top model in every race. Keeping a cool head for all high performances. Endless distances and four-digit elevation gain, incredible speeds and hot asphalt. Your day on the bike knows no limits. Sounds like dream conditions for you – for the AirBreaker as well. On its home turf the AirBreaker will convince you. Extreme conditions demand for the best material to rely on. The AirBreaker provides perfectly balanced head climate and an airflow that feels like tailwind. At any time, in any terrain, in any position. Whether ventilation or aero, weight or safety, the AirBreaker offers top features with the highest ABUS standard. Thanks to ActiCage lite -an integrated structural reinforcement- the AirBreaker provides maximum protection with minimal weight. The Floating Padding ensures optimal comfort. Thanks to the flutter-free FlowStraps, adjusting the helmet is nearly a thing of the past. AirPort is a true aero miracle: special temple channels let you safely and aerodynamically store your glasses in the helmetThe name speaks for itself. AirBreaker - a road helmet made for perfect ventilation and aerodynamics. The AirBreaker makes no difference whether you are fascinated by high mountains, long distances or high speeds. Outstanding ventilation, best aero data and a weight you barely feel makes the AirBreaker your top model in every race. Keeping a cool head for all high performances. Endless distances and four-digit elevation gain, incredible speeds and hot asphalt. Your day on the bike knows no limits. Sounds like dream conditions for you - for the AirBreaker as well. On its home turf the AirBreaker will convince you. Extreme conditions demand for the best material to rely on. The AirBreaker provides perfectly balanced head climate and an airflow that feels like tailwind. At any time, in any terrain, in any position. Whether ventilation or aero, weight or safety, the AirBreaker offers top features with the highest ABUS standard. Thanks to ActiCage lite -an integrated structural reinforcement- the AirBreaker provides maximum protection with minimal weight. The Floating Padding ensures optimal comfort. Thanks to the flutter-free FlowStraps, adjusting the helmet is nearly a thing of the past. AirPort is a true aero miracle: special temple channels let you safely and aerodynamically store your glasses in the helmet’s rear. The Zoom Ace system guarantees a perfect fit, precisely adjustable with a grippy wheel. A specially shaped slot within the adjustment system gives plenty of space to long hair and makes the AirBreaker ponytail compatible. s rear. The Zoom Ace system guarantees a perfect fit, precisely adjustable with a grippy wheel. A specially shaped slot within the adjustment system gives plenty of space to long hair and makes the AirBreaker ponytail compatible.
Abus Scraper 3.0 HelmetThe Abus Scraper 3.0 Helmet is your sporty head protector, keeping you safe and sound when you're enjoying cycling, skateboarding or inline skating. For an action-packed day of activity or a daily commute, the ABS hard-shell technology of the Scraper 3.0 Helmet provides impact absorption in the event of a fall. The durable outer is up to the knocks and scrapes of daily activity too, ensuring a long life.When it comes to cycling to meet friends or skating the half-pipe or even cruising a longboard you'll want to keep cool and here the 4 air intakes and 4 exhaust vents keep fresh air circulating and allow heat to escape too. Adjustment of the fit is also quick and easy via the rear dial, ensuring comfort is always easy to find. Lastly, reflectors keep you visible when the daylight begins to fade.From city bike to BMX to skateboard to inline, the Scraper 3.0 keeps your head safe and style points high, letting you enjoy the ride.Features:ABS hard-shell technologyHigh visibility due to powerful reflectorsPonytail compatibility: Helmet well suited to plait wearersForced Air Cooling Technology: Sophisticated ventilation system for an optimal head climateExcellent ventilation with 4 air inlets and 4 air outletsSize adjustment by means of a half-ring made from particularly hard-wearing and slightly malleable plastic for optimal stability and form-fittingZoom Ace Urban: Finely adjustable adjustment system with handy adjustment wheel for a customisable fitWeight: 490 gBuy Abus Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.
Abus Scraper 3.0 HelmetThe Abus Scraper 3.0 Helmet is your sporty head protector, keeping you safe and sound when you're enjoying cycling, skateboarding or inline skating. For an action-packed day of activity or a daily commute, the ABS hard-shell technology of the Scraper 3.0 Helmet provides impact absorption in the event of a fall. The durable outer is up to the knocks and scrapes of daily activity too, ensuring a long life.When it comes to cycling to meet friends or skating the half-pipe or even cruising a longboard you'll want to keep cool and here the 4 air intakes and 4 exhaust vents keep fresh air circulating and allow heat to escape too. Adjustment of the fit is also quick and easy via the rear dial, ensuring comfort is always easy to find. Lastly, reflectors keep you visible when the daylight begins to fade.From city bike to BMX to skateboard to inline, the Scraper 3.0 keeps your head safe and style points high, letting you enjoy the ride.Features:ABS hard-shell technologyHigh visibility due to powerful reflectorsPonytail compatibility: Helmet well suited to plait wearersForced Air Cooling Technology: Sophisticated ventilation system for an optimal head climateExcellent ventilation with 4 air inlets and 4 air outletsSize adjustment by means of a half-ring made from particularly hard-wearing and slightly malleable plastic for optimal stability and form-fittingZoom Ace Urban: Finely adjustable adjustment system with handy adjustment wheel for a customisable fitWeight: 490 gBuy Abus Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.
Abus Urban - I 3.0 HelmetThe Abus Urban - I 3.0 Helmet is a popular choice for urban cyclists who ride for leisure, fitness or commuting. Packed with safety features and high on comfort, it's your perfect two-wheeled pedalling companion. The Urban - I 3.0 Helmet is popular for good reason. Firstly, of course, it provides excellent head protection. This is thanks to the in-mould construction whereby a durable outer shell is bonded to the shock-absorbing EPS foam inner. This makes it tough enough for daily use and highly protective in the unfortunate event of a fall. Safety is also enhanced via the large reflectors and built-in LED tail-light. For an early morning start or late evening pedal, these two eye-catching features work brilliantly to keep you safely visible. Comfort and fit are also superb. To get the fit right it's a simple twist of a dial, the Zoom Ace Urban retention system giving you a precise and customisable fit every time you hop on your bike. Keeping a cool head is easy too. A total of 12 inlet vents and 5 exhaust ports work together to keep airflow over your head optimised, providing cooling and also allowing any perspiration build-up an easy escape route too. Male or female, old or young, for those of you who love to travel by bike and enjoy the fresh air and fitness it brings, the Urban - I 3.0 Helmet keeps you safe as you ride. Features:In-Mould for a durable connection with the outer shell with shock-absorbing material (EPS)Large reflectors and a high mounted LED taillight with 180-degree visibilityFidlock buckle can be easily used even with thick winter glovesHigh visibility due to reflectorsIntegrated bug-meshZoom Ace Urban: Height adjustable retention system with handy adjustment wheel for a customisable fitPonytail compatibilityExcellent ventilation with 12 air inlets and 5 outletsWeight: 250 gBuy Abus Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.
Abus Urban - I 3.0 HelmetThe Abus Urban - I 3.0 Helmet is a popular choice for urban cyclists who ride for leisure, fitness or commuting. Packed with safety features and high on comfort, it's your perfect two-wheeled pedalling companion. The Urban - I 3.0 Helmet is popular for good reason. Firstly, of course, it provides excellent head protection. This is thanks to the in-mould construction whereby a durable outer shell is bonded to the shock-absorbing EPS foam inner. This makes it tough enough for daily use and highly protective in the unfortunate event of a fall. Safety is also enhanced via the large reflectors and built-in LED tail-light. For an early morning start or late evening pedal, these two eye-catching features work brilliantly to keep you safely visible. Comfort and fit are also superb. To get the fit right it's a simple twist of a dial, the Zoom Ace Urban retention system giving you a precise and customisable fit every time you hop on your bike. Keeping a cool head is easy too. A total of 12 inlet vents and 5 exhaust ports work together to keep airflow over your head optimised, providing cooling and also allowing any perspiration build-up an easy escape route too. Male or female, old or young, for those of you who love to travel by bike and enjoy the fresh air and fitness it brings, the Urban - I 3.0 Helmet keeps you safe as you ride. Features:In-Mould for a durable connection with the outer shell with shock-absorbing material (EPS)Large reflectors and a high mounted LED taillight with 180-degree visibilityFidlock buckle can be easily used even with thick winter glovesHigh visibility due to reflectorsIntegrated bug-meshZoom Ace Urban: Height adjustable retention system with handy adjustment wheel for a customisable fitPonytail compatibilityExcellent ventilation with 12 air inlets and 5 outletsWeight: 250 gBuy Abus Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.
Abus Urban - I 3.0 HelmetThe Abus Urban - I 3.0 Helmet is a popular choice for urban cyclists who ride for leisure, fitness or commuting. Packed with safety features and high on comfort, it's your perfect two-wheeled pedalling companion. The Urban - I 3.0 Helmet is popular for good reason. Firstly, of course, it provides excellent head protection. This is thanks to the in-mould construction whereby a durable outer shell is bonded to the shock-absorbing EPS foam inner. This makes it tough enough for daily use and highly protective in the unfortunate event of a fall. Safety is also enhanced via the large reflectors and built-in LED tail-light. For an early morning start or late evening pedal, these two eye-catching features work brilliantly to keep you safely visible. Comfort and fit are also superb. To get the fit right it's a simple twist of a dial, the Zoom Ace Urban retention system giving you a precise and customisable fit every time you hop on your bike. Keeping a cool head is easy too. A total of 12 inlet vents and 5 exhaust ports work together to keep airflow over your head optimised, providing cooling and also allowing any perspiration build-up an easy escape route too. Male or female, old or young, for those of you who love to travel by bike and enjoy the fresh air and fitness it brings, the Urban - I 3.0 Helmet keeps you safe as you ride. Features:In-Mould for a durable connection with the outer shell with shock-absorbing material (EPS)Large reflectors and a high mounted LED taillight with 180-degree visibilityFidlock buckle can be easily used even with thick winter glovesHigh visibility due to reflectorsIntegrated bug-meshZoom Ace Urban: Height adjustable retention system with handy adjustment wheel for a customisable fitPonytail compatibilityExcellent ventilation with 12 air inlets and 5 outletsWeight: 250 gBuy Abus Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.
Abus Urban - I 3.0 HelmetThe Abus Urban - I 3.0 Helmet is a popular choice for urban cyclists who ride for leisure, fitness or commuting. Packed with safety features and high on comfort, it's your perfect two-wheeled pedalling companion. The Urban - I 3.0 Helmet is popular for good reason. Firstly, of course, it provides excellent head protection. This is thanks to the in-mould construction whereby a durable outer shell is bonded to the shock-absorbing EPS foam inner. This makes it tough enough for daily use and highly protective in the unfortunate event of a fall. Safety is also enhanced via the large reflectors and built-in LED tail-light. For an early morning start or late evening pedal, these two eye-catching features work brilliantly to keep you safely visible. Comfort and fit are also superb. To get the fit right it's a simple twist of a dial, the Zoom Ace Urban retention system giving you a precise and customisable fit every time you hop on your bike. Keeping a cool head is easy too. A total of 12 inlet vents and 5 exhaust ports work together to keep airflow over your head optimised, providing cooling and also allowing any perspiration build-up an easy escape route too. Male or female, old or young, for those of you who love to travel by bike and enjoy the fresh air and fitness it brings, the Urban - I 3.0 Helmet keeps you safe as you ride. Features:In-Mould for a durable connection with the outer shell with shock-absorbing material (EPS)Large reflectors and a high mounted LED taillight with 180-degree visibilityFidlock buckle can be easily used even with thick winter glovesHigh visibility due to reflectorsIntegrated bug-meshZoom Ace Urban: Height adjustable retention system with handy adjustment wheel for a customisable fitPonytail compatibilityExcellent ventilation with 12 air inlets and 5 outletsWeight: 250 gBuy Abus Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.
Abus Airbreaker Road HelmetCreated for cycling fast, the Abus Airbreaker Road Helmet delivers optimised aerodynamics so you're not held back. And the Multi Speed design keeps you cool whether you're powering on the flat or toiling up a steep mountain climb. Fast. But Cool.The Airbreaker Road Helmet has been created for road cyclists who want smooth aerodynamics but don't want to compromise on keeping cool. This performance balance is made possible by Abus' Multi Speed design, offering the best possible aerodynamics and at the same time ensuring optimum ventilation.At slow speeds, such as found when climbing hills and mountains ventilation is maximised. However, as speeds increase aerodynamics take precedent. The Forced Air Cooling Technology of the Airbreaker features 11 inlet vents and 3 outlets, all connected via inner flow channels, creating turbo-charged airflow over the head. When you're riding hard you're not going to be overheating or getting too sweaty. Comfortably Protective.Head protection is, of course, superb too. The in-mould design sees a durable outer shell bonded to a shock-absorbing EPS core. In the event of a crash, this dissipates impact forces, protecting your head from injury. Inside the EPS core, the ActiCage Lite system provides structural support, allowing Abus to keep strip weight, optimise the size of the vents while still delivering exceptional protection. When you're on the bike and if you're involved in a crash a good fit is essential. And this is made easy with the Abus Zoom Ace adjustment system. An easy to reach adjustment wheel lets you get the very best fit, offering up all-ride comfort and security in a fall. At just 230 grams in weight and with airflow and aerodynamics perfectly balanced, the Airbreaker Road Helmet brings winning performance to your ride. Features:In-Mould for a durable connection with the outer shell with shock-absorbing helmet material (EPS)In-Mould for a durable connection with the outer shell with shock-absorbing helmet material(EPS)ActiCage Lite: A structural reinforcement integrated into the EPS liner. It provides maximum protection while ensuring optimal ventilation and extreme comfortForced Air Cooling Technology: Sophisticated ventilation system for an optimal head climateExcellent ventilation with 11 air inlets and 3 air outlets connected with flow channelsFlowStraps: Aerodynamic, flutter-free and skin-friendly thanks to specially developed strap profileZoom Ace: Finely adjustable adjustment system with handy adjustment wheel for a customisable fitAirPort: Aerodynamic glasses holder with strap guidePonytail compatibility: Helmet well suited to plait wearersWeight: 230gBuy Abus Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.