The long-sleeve Gabba is one of our most versatile pieces. 100% wind protection with GORE-TEX INFINIUM™ WINDSTOPPER® water protection and best-in-class breathability. With a light base layer it's good for mild temperatures, or with a thermal layer you can ride it below freezing. If you have just one jacket in your cycling wardrobe, this should be it. Sublimation print graphic on the do-everything Perfetto RoS 2 Jacket base Castelli-exclusive GORE-TEX INFINIUM™ WINDSTOPPER® 205 Warm brushed water-resistant fabric on front-facing surfaces GORE-TEX INFINIUM™ WINDSTOPPER® 203 Stretch on rear-facing surfaces for greater stretch and breathability Taped shoulder seams for extra rain protection Top- and bottom-opening YKK® Vislon® zipper for easy sliding, covered for additional wind and rain protection Zippered ventilation opening on side of chest 3 rear pockets Reflective panel at bottom of pockets. The Unlimited version of the Perfetto RoS 2 Jacket is simply a graphic treatment making it look more at home on any surface but not sacrificing any of the performance. When we think about what we want in a gravel jacket, we keep coming back to the Perfetto, since it really is perfect for so many conditions. We just want it to look different. The Perfetto RoS 2 excels in dry conditions thanks to the high breathability, as well as in wet conditions thanks to the Castelli-exclusive GORE-TEX INFINIUM™ WINDSTOPPER® fabrics. There's a light fleece-lined water-resistant fabric on the forward-facing surfaces and a lighter and stretchier fabric on the back that maximizes breathability while providing excellent water repellency. The Perfetto RoS 2 Jacket keeps all the cold wind out while being much more breathable than the typical polyurethane membranes used on most jackets that try to compete with the Perfetto. When you stay drier you don't need as many layers underneath. The beauty of this jacket is that it doesn't have any insulation on its own, so a thin base layer is just right for mild conditions, while adding an insulating layer (a thermal jersey or Castelli's Alpha 2nd Layer) will take you to cold temperatures. You decide. The 2 part of the name refers to the updates to the latest version, including a YKK® Vislon® zipper with both top and bottom openings for more adjustable ventilation. The reflectivity on the back is more visible, the seam at the top of the shoulder has been moved to the back, and the three pockets hold more gear. While the Perfetto remains decidedly a performance fit, the new model has a touch more room through the chest, shoulder, and biceps. This is the one jacket that belongs in every cyclist's quiver.
The long-sleeve Gabba is one of our most versatile pieces. 100% wind protection with GORE-TEX INFINIUM™ WINDSTOPPER® water protection and best-in-class breathability. With a light base layer it's good for mild temperatures, or with a thermal layer you can ride it below freezing. If you have just one jacket in your cycling wardrobe, this should be it. Sublimation print graphic on the do-everything Perfetto RoS 2 Jacket base Castelli-exclusive GORE-TEX INFINIUM™ WINDSTOPPER® 205 Warm brushed water-resistant fabric on front-facing surfaces GORE-TEX INFINIUM™ WINDSTOPPER® 203 Stretch on rear-facing surfaces for greater stretch and breathability Taped shoulder seams for extra rain protection Top- and bottom-opening YKK® Vislon® zipper for easy sliding, covered for additional wind and rain protection Zippered ventilation opening on side of chest 3 rear pockets Reflective panel at bottom of pockets. The Unlimited version of the Perfetto RoS 2 Jacket is simply a graphic treatment making it look more at home on any surface but not sacrificing any of the performance. When we think about what we want in a gravel jacket, we keep coming back to the Perfetto, since it really is perfect for so many conditions. We just want it to look different. The Perfetto RoS 2 excels in dry conditions thanks to the high breathability, as well as in wet conditions thanks to the Castelli-exclusive GORE-TEX INFINIUM™ WINDSTOPPER® fabrics. There's a light fleece-lined water-resistant fabric on the forward-facing surfaces and a lighter and stretchier fabric on the back that maximizes breathability while providing excellent water repellency. The Perfetto RoS 2 Jacket keeps all the cold wind out while being much more breathable than the typical polyurethane membranes used on most jackets that try to compete with the Perfetto. When you stay drier you don't need as many layers underneath. The beauty of this jacket is that it doesn't have any insulation on its own, so a thin base layer is just right for mild conditions, while adding an insulating layer (a thermal jersey or Castelli's Alpha 2nd Layer) will take you to cold temperatures. You decide. The 2 part of the name refers to the updates to the latest version, including a YKK® Vislon® zipper with both top and bottom openings for more adjustable ventilation. The reflectivity on the back is more visible, the seam at the top of the shoulder has been moved to the back, and the three pockets hold more gear. While the Perfetto remains decidedly a performance fit, the new model has a touch more room through the chest, shoulder, and biceps. This is the one jacket that belongs in every cyclist's quiver.
The Front Street Pro hub from BSD is a beefed up version of the popular front hub. This Pro version features an near indestructible heat treated 6061 aluminium shell, a more durable female 10mm heat treated axle and push on cones and press fit hub guards. The Front Street Pro is laced to the BSD XLT rim. The XLT is BSD's lightweight rim, designed around an X-section for increased stiffness, the rim has an aero style shape which further triangulates the design. With other proven features such as tapered sidewalls and patented cross over lacing this rim is light while remaining strong. ###section### Product Specs WHEEL SIZE: 20" HUB: BSD Front Street Pro AXLE: Female RIM: BSD XLT SPOKES: TBC NIPPLES: TBC WEIGHT: TBC
POC Tectal Race MIPS NFC HelmetBringing the best safety technology to mountain bike trails, the POC Tectal Race MIPS NFC Helmet features MIPS head protection, a Recco location reflector and wICEme® NFC Medical ID chip. When you're taking on the most demanding MTB trails it's an essential pick. Let the Tectal do the TalkingWhen you’re mountain biking, crashing is a part of the game. It’s how you progress. Get better. Push boundaries. However, there may be a time when you’re not able to simply dust yourself down and carry on riding. It’s here the POC Tectal Race MIPS NFC Helmet comes in. It features a twICEme® NFC Medical ID chip, letting you store vital medical and emergency contact details. With an NFC-enabled smartphone first responders can read the chip and make the best treatment decisions there and then.And if that wasn’t enough, a RECCO® Reflector lets emergency services scan for you should you become lost on a backcountry mountain biking adventure.Take on The Trails with ConfidenceThe construction method of the Tectal race is borrowed from POC's groundbreaking Octal road cycling helmet. This sees a tough unibody shell bonded to a shock-absorbing EPS liner. The shell provides durable protection against minor knocks and in the event of a more serious fall enhances structural integrity. An Aramid bridge system, first seen in POC’s proven and award-winning Trabec helmet also allow POC to further enhance structural stability and improve penetration protection.At the core of the helmet is the EPS foam liner. This is the layer that soaks up harder head impacts during a fall. The density and thickness vary in order to optimise protection where it's needed most.The design of the Tectal Race also sees greater coverage specifically tailored for mountain biking. This gives extra protection across the temples and back of the head, so you're covered if you go over the bars or off the back.MIPS Integra Head Protection SolutionThe Tectal Race also features the MIPS Integra system. This brings together POC's 'whole-helmet' safety and design ethos with the fully integrated brain-protecting technology of MIPS. This holistic approach sees every detail of the helmet engineered to work in harmony with each other, giving you new levels of seamless safety, comfort, ventilation, fit and function.MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head.Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head.Cool ComfortWhen you're riding, you'll soon be building up body heat. And with it, sweat. And so POC have ensured ventilation is optimised. In fact, they've used wind-tunnel testing to get the airflow just right, so whether going fast or slow, you'll enjoy fresh air over your head. 360-degree Fit SystemIn order to keep the Tectal in place, you’ll find POC’s lightweight 360° fit system. This offers an easy-to-operate and precise fit, ensuring your helmet remains comfortable when riding and stays securely in place in the event of a crash.FeaturestwICEme® NFC Medical ID - stores your vital medical info and emergency contacts within the helmet so first responders can instantly get the information they needMIPS Integra Head Protection SolutionEPS (Expanded Polystyrene) liner - EPS liner gives optimized protectionUnibody shell construction - unibody Polycarbonate shell enhances the structural integrity of the helmetAramid Bridges - moulded to the helmet liner to enhance structural stability and improve penetration protectionWind-tunnel optimized ventilationExtended protection zones - designed to provide more coverage at temples and back of the headEye garage - securely store sunglasses in the ventilation holes at the backRecco reflector - helps rescue services easily and quickly locate you if something goes wrongAdjustable 360-degree fit systemAdjustable peak - adjusted for personalized protection from the elementsWeight: 385g (M)Certification - EN 1078Shop all MIPS helmets - Click hereBuy POC Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.
POC Tectal Race MIPS NFC HelmetBringing the best safety technology to mountain bike trails, the POC Tectal Race MIPS NFC Helmet features MIPS head protection, a Recco location reflector and wICEme® NFC Medical ID chip. When you're taking on the most demanding MTB trails it's an essential pick. Let the Tectal do the TalkingWhen you’re mountain biking, crashing is a part of the game. It’s how you progress. Get better. Push boundaries. However, there may be a time when you’re not able to simply dust yourself down and carry on riding. It’s here the POC Tectal Race MIPS NFC Helmet comes in. It features a twICEme® NFC Medical ID chip, letting you store vital medical and emergency contact details. With an NFC-enabled smartphone first responders can read the chip and make the best treatment decisions there and then.And if that wasn’t enough, a RECCO® Reflector lets emergency services scan for you should you become lost on a backcountry mountain biking adventure.Take on The Trails with ConfidenceThe construction method of the Tectal race is borrowed from POC's groundbreaking Octal road cycling helmet. This sees a tough unibody shell bonded to a shock-absorbing EPS liner. The shell provides durable protection against minor knocks and in the event of a more serious fall enhances structural integrity. An Aramid bridge system, first seen in POC’s proven and award-winning Trabec helmet also allow POC to further enhance structural stability and improve penetration protection.At the core of the helmet is the EPS foam liner. This is the layer that soaks up harder head impacts during a fall. The density and thickness vary in order to optimise protection where it's needed most.The design of the Tectal Race also sees greater coverage specifically tailored for mountain biking. This gives extra protection across the temples and back of the head, so you're covered if you go over the bars or off the back.MIPS Integra Head Protection SolutionThe Tectal Race also features the MIPS Integra system. This brings together POC's 'whole-helmet' safety and design ethos with the fully integrated brain-protecting technology of MIPS. This holistic approach sees every detail of the helmet engineered to work in harmony with each other, giving you new levels of seamless safety, comfort, ventilation, fit and function.MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head.Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head.Cool ComfortWhen you're riding, you'll soon be building up body heat. And with it, sweat. And so POC have ensured ventilation is optimised. In fact, they've used wind-tunnel testing to get the airflow just right, so whether going fast or slow, you'll enjoy fresh air over your head. 360-degree Fit SystemIn order to keep the Tectal in place, you’ll find POC’s lightweight 360° fit system. This offers an easy-to-operate and precise fit, ensuring your helmet remains comfortable when riding and stays securely in place in the event of a crash.FeaturestwICEme® NFC Medical ID - stores your vital medical info and emergency contacts within the helmet so first responders can instantly get the information they needMIPS Integra Head Protection SolutionEPS (Expanded Polystyrene) liner - EPS liner gives optimized protectionUnibody shell construction - unibody Polycarbonate shell enhances the structural integrity of the helmetAramid Bridges - moulded to the helmet liner to enhance structural stability and improve penetration protectionWind-tunnel optimized ventilationExtended protection zones - designed to provide more coverage at temples and back of the headEye garage - securely store sunglasses in the ventilation holes at the backRecco reflector - helps rescue services easily and quickly locate you if something goes wrongAdjustable 360-degree fit systemAdjustable peak - adjusted for personalized protection from the elementsWeight: 385g (M)Certification - EN 1078Shop all MIPS helmets - Click hereBuy POC Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.
POC Tectal Race MIPS NFC HelmetBringing the best safety technology to mountain bike trails, the POC Tectal Race MIPS NFC Helmet features MIPS head protection, a Recco location reflector and wICEme® NFC Medical ID chip. When you're taking on the most demanding MTB trails it's an essential pick. Let the Tectal do the TalkingWhen you’re mountain biking, crashing is a part of the game. It’s how you progress. Get better. Push boundaries. However, there may be a time when you’re not able to simply dust yourself down and carry on riding. It’s here the POC Tectal Race MIPS NFC Helmet comes in. It features a twICEme® NFC Medical ID chip, letting you store vital medical and emergency contact details. With an NFC-enabled smartphone first responders can read the chip and make the best treatment decisions there and then.And if that wasn’t enough, a RECCO® Reflector lets emergency services scan for you should you become lost on a backcountry mountain biking adventure.Take on The Trails with ConfidenceThe construction method of the Tectal race is borrowed from POC's groundbreaking Octal road cycling helmet. This sees a tough unibody shell bonded to a shock-absorbing EPS liner. The shell provides durable protection against minor knocks and in the event of a more serious fall enhances structural integrity. An Aramid bridge system, first seen in POC’s proven and award-winning Trabec helmet also allow POC to further enhance structural stability and improve penetration protection.At the core of the helmet is the EPS foam liner. This is the layer that soaks up harder head impacts during a fall. The density and thickness vary in order to optimise protection where it's needed most.The design of the Tectal Race also sees greater coverage specifically tailored for mountain biking. This gives extra protection across the temples and back of the head, so you're covered if you go over the bars or off the back.MIPS Integra Head Protection SolutionThe Tectal Race also features the MIPS Integra system. This brings together POC's 'whole-helmet' safety and design ethos with the fully integrated brain-protecting technology of MIPS. This holistic approach sees every detail of the helmet engineered to work in harmony with each other, giving you new levels of seamless safety, comfort, ventilation, fit and function.MIPS (Multi-directional Impact Protection System) The Mips system is designed to provide added safety for helmets in many accidents. For certain impacts, the Mips system can reduce harmful rotational motion that might otherwise be transferred to the user’s head.Rotational motion is a common cause of concussions in oblique hits to the head. In a crash, the Mips system is designed to move slightly inside the helmet to help redirect forces away from the head.Cool ComfortWhen you're riding, you'll soon be building up body heat. And with it, sweat. And so POC have ensured ventilation is optimised. In fact, they've used wind-tunnel testing to get the airflow just right, so whether going fast or slow, you'll enjoy fresh air over your head. 360-degree Fit SystemIn order to keep the Tectal in place, you’ll find POC’s lightweight 360° fit system. This offers an easy-to-operate and precise fit, ensuring your helmet remains comfortable when riding and stays securely in place in the event of a crash.FeaturestwICEme® NFC Medical ID - stores your vital medical info and emergency contacts within the helmet so first responders can instantly get the information they needMIPS Integra Head Protection SolutionEPS (Expanded Polystyrene) liner - EPS liner gives optimized protectionUnibody shell construction - unibody Polycarbonate shell enhances the structural integrity of the helmetAramid Bridges - moulded to the helmet liner to enhance structural stability and improve penetration protectionWind-tunnel optimized ventilationExtended protection zones - designed to provide more coverage at temples and back of the headEye garage - securely store sunglasses in the ventilation holes at the backRecco reflector - helps rescue services easily and quickly locate you if something goes wrongAdjustable 360-degree fit systemAdjustable peak - adjusted for personalized protection from the elementsWeight: 385g (M)Certification - EN 1078Shop all MIPS helmets - Click hereBuy POC Helmets from Chain Reaction Cycles, the World's Largest Online Bike Store.
The Hope Fortus 30 Front Wheel features a wide and optimised rim profile with a 30mm internal width to improve tyre contact area and traction. The Fortus 30 is built to be incredibly strong, making it an ideal choice for hard-hitting enduro and downhill enthusiasts.Incredibly strong 30mm ID welded and eyeletted 6061 T6 Aluminium tubeless ready rim (Tape and Valves included)Durable Hope Pro 4 hubs with stainless steal sealed cartridge bearingsLightweight & strong Sapim Race DB spokes and brass nipplesComplete Fortus 30 wheelset weight from 2230gAs well as being compatible with 2.2-2.6 inch wide tyres they are also tubeless compatible; just add tape, valves & sealant and away you go! The welded and eyeletted rim is constructed of a strong and durable 6061 T6 aluminium, the double butted spokes are black Sapim race stainless steel and the nipples are silver brass. The wheels come equipped with Hope s Pro 4 hub. The boost front wheel option comes built with a 110x15mm boost specific hub. All the wheels are machine built and hand finished in Barnoldswick.How could Hope possibly follow on from the legendary Pro 2 It was always going to be a tough act to follow. But with the Pro 4, Hope have seemingly done the impossible. With a ground up redesign, the Pro 4 hub takes everything that made the Pro 2 great and brings it bang up to date. With larger diameter flanges to help increase stiffness on modern 27.5 and 29 inch wheels with no weight increase, the Pro 4 uses Hope s bullet proof sealed stainless steel cartridge bearings that make for an extremely reliable centrepiece to your wheelset.
The Hope Fortus 30 Front Wheel features a wide and optimised rim profile with a 30mm internal width to improve tyre contact area and traction. The Fortus 30 is built to be incredibly strong, making it an ideal choice for hard-hitting enduro and downhill enthusiasts.Incredibly strong 30mm ID welded and eyeletted 6061 T6 Aluminium tubeless ready rim (Tape and Valves included)Durable Hope Pro 4 hubs with stainless steal sealed cartridge bearingsLightweight & strong Sapim Race DB spokes and brass nipplesComplete Fortus 30 wheelset weight from 2230gAs well as being compatible with 2.2-2.6 inch wide tyres they are also tubeless compatible; just add tape, valves & sealant and away you go! The welded and eyeletted rim is constructed of a strong and durable 6061 T6 aluminium, the double butted spokes are black Sapim race stainless steel and the nipples are silver brass. The wheels come equipped with Hope s Pro 4 hub. The boost front wheel option comes built with a 110x15mm boost specific hub. All the wheels are machine built and hand finished in Barnoldswick.How could Hope possibly follow on from the legendary Pro 2 It was always going to be a tough act to follow. But with the Pro 4, Hope have seemingly done the impossible. With a ground up redesign, the Pro 4 hub takes everything that made the Pro 2 great and brings it bang up to date. With larger diameter flanges to help increase stiffness on modern 27.5 and 29 inch wheels with no weight increase, the Pro 4 uses Hope s bullet proof sealed stainless steel cartridge bearings that make for an extremely reliable centrepiece to your wheelset.
The Hope Fortus 26 Front Wheel features a wide and optimised rim profile with a 26mm internal width to improve tyre contact area and traction, making it an ideal choice for enduro, all mountain and trail riding enthusiasts.Lightweight & incredibly strong 26mm ID welded and eyeletted 6061 T6 Aluminium tubeless ready rim (Tape and Valves included)Durable Hope Pro 4 hubs with stainless steal sealed cartridge bearingsLightweight & strong Sapim Race DB spokes and brass nipplesComplete Fortus 26 wheelset weight from 1980gAs well as being compatible with 2.2-2.5 inch wide tyres they are also tubeless compatible; just add tape, valves & sealant and away you go! The welded and eyeletted rim is constructed of a strong and durable 6061 T6 aluminium, the double butted spokes are black Sapim race stainless steel and the nipples are silver brass. The wheels come equipped with Hope s Pro 4 hub. The boost front wheel option comes built with a 110x15mm boost specific hub. All the wheels are machine built and hand finished in Barnoldswick.How could Hope possibly follow on from the legendary Pro 2 It was always going to be a tough act to follow. But with the Pro 4, Hope have seemingly done the impossible. With a ground up redesign, the Pro 4 hub takes everything that made the Pro 2 great and brings it bang up to date. With larger diameter flanges to help increase stiffness on modern 27.5 and 29 inch wheels with no weight increase, the Pro 4 uses Hope s bullet proof sealed stainless steel cartridge bearings that make for an extremely reliable centrepiece to your wheelset.
The Hope Fortus 30 Front Wheel features a wide and optimised rim profile with a 30mm internal width to improve tyre contact area and traction. The Fortus 30 is built to be incredibly strong, making it an ideal choice for hard-hitting enduro and downhill enthusiasts.Incredibly strong 30mm ID welded and eyeletted 6061 T6 Aluminium tubeless ready rim (Tape and Valves included)Durable Hope Pro 4 hubs with stainless steal sealed cartridge bearingsLightweight & strong Sapim Race DB spokes and brass nipplesComplete Fortus 30 wheelset weight from 2230gAs well as being compatible with 2.2-2.6 inch wide tyres they are also tubeless compatible; just add tape, valves & sealant and away you go! The welded and eyeletted rim is constructed of a strong and durable 6061 T6 aluminium, the double butted spokes are black Sapim race stainless steel and the nipples are silver brass. The wheels come equipped with Hope s Pro 4 hub. The boost front wheel option comes built with a 110x15mm boost specific hub. All the wheels are machine built and hand finished in Barnoldswick.How could Hope possibly follow on from the legendary Pro 2 It was always going to be a tough act to follow. But with the Pro 4, Hope have seemingly done the impossible. With a ground up redesign, the Pro 4 hub takes everything that made the Pro 2 great and brings it bang up to date. With larger diameter flanges to help increase stiffness on modern 27.5 and 29 inch wheels with no weight increase, the Pro 4 uses Hope s bullet proof sealed stainless steel cartridge bearings that make for an extremely reliable centrepiece to your wheelset.
The Hope Fortus 23 Front Wheel features a lightweight but wide and optimised rim profile with a 23mm internal width to improve tyre contact area and traction, making it an ideal choice for cross country and trail riding enthusiasts. Lightweight & incredibly strong 23mm ID welded and eyeletted 6061 T6 Aluminium tubeless ready rim (Tape and Valves included)Durable Hope Pro 4 hubs with stainless steal sealed cartridge bearingsLightweight & strong Sapim Race DB spokes and brass nipplesComplete Fortus 23 wheelset weight from 1760gAs well as being compatible with 2.0-2.5 inch wide tyres they are also tubeless compatible; just add tape, valves & sealant and away you go! The welded and eyeletted rim is constructed of a strong and durable 6061 T6 aluminium, the double butted spokes are black Sapim race stainless steel and the nipples are silver brass. The wheels come equipped with Hope s Pro 4 hub. The boost front wheel option comes built with a 110x15mm boost specific hub. All the wheels are machine built and hand finished in Barnoldswick.How could Hope possibly follow on from the legendary Pro 2 It was always going to be a tough act to follow. But with the Pro 4, Hope have seemingly done the impossible. With a ground up redesign, the Pro 4 hub takes everything that made the Pro 2 great and brings it bang up to date. With larger diameter flanges to help increase stiffness on modern 27.5 and 29 inch wheels with no weight increase, the Pro 4 uses Hope s bullet proof sealed stainless steel cartridge bearings that make for an extremely reliable centrepiece to your wheelset.
The Hope Fortus 23 Front Wheel features a lightweight but wide and optimised rim profile with a 23mm internal width to improve tyre contact area and traction, making it an ideal choice for cross country and trail riding enthusiasts. Lightweight & incredibly strong 23mm ID welded and eyeletted 6061 T6 Aluminium tubeless ready rim (Tape and Valves included)Durable Hope Pro 4 hubs with stainless steal sealed cartridge bearingsLightweight & strong Sapim Race DB spokes and brass nipplesComplete Fortus 23 wheelset weight from 1760gAs well as being compatible with 2.0-2.5 inch wide tyres they are also tubeless compatible; just add tape, valves & sealant and away you go! The welded and eyeletted rim is constructed of a strong and durable 6061 T6 aluminium, the double butted spokes are black Sapim race stainless steel and the nipples are silver brass. The wheels come equipped with Hope s Pro 4 hub. The boost front wheel option comes built with a 110x15mm boost specific hub. All the wheels are machine built and hand finished in Barnoldswick.How could Hope possibly follow on from the legendary Pro 2 It was always going to be a tough act to follow. But with the Pro 4, Hope have seemingly done the impossible. With a ground up redesign, the Pro 4 hub takes everything that made the Pro 2 great and brings it bang up to date. With larger diameter flanges to help increase stiffness on modern 27.5 and 29 inch wheels with no weight increase, the Pro 4 uses Hope s bullet proof sealed stainless steel cartridge bearings that make for an extremely reliable centrepiece to your wheelset.