The HollowTech II 12-speed Ultegra chainset offers an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders HollowGlide hollow outer chainring gives vast improvements in rigidity by virtually removing outer chainring flex and hugely improves shift performance, even under high load The chainring teeth have been developed to work in conjunction with 12-speed HG chains for increased contact to provide greater efficiency and improved power transfer Industry leading HollowTech II cold forged 4 arm hollow cranks have been evolved for maximum rigidity while reducing weight Wide gear pitch spacing increases clearance between chain and leading teeth to provide compatibility to frames with O.L.D. 135 / 142 mm A wide range of chainring options and crank arm lengths are available to meet the needs of all riders and racing disciplines HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency HollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability(sold separately)
Skeleton geometry has made it possible to reduce weight without diminishing braking power while maintaining the same operating safety. The differentiated front and rear geometry ensures power and progressive travel. brake-pad height adjustment ratio: 40-50 mm (measured from brake fixing-bolt to brake-shoe-nut)
Shimano Ultegra R8000 11 Speed Chainset w/o BBEagerly anticipated, the updated Shimano R8000 crankset has arrived. Featuring clear improvements in aesthetics and performance from the 6800 series, the Ultegra R8000 series has hugely benefited from the trickle-down technology of its big brother, the Dura-Ace R9000 model. This completely updated road bike chainset features lightweight crankarms, a hollow outer chainring, and a wider gear pitch for increased clearance on modern road frames that have wider rear dropouts and longer chainstays.Offering weight reduction without sacrificing stiffness, the Shimano Ultegra R8000 chainset enables a wide range of gear combinations to suit your every need. Paired with the updated front and rear derailleurs, your shifts will be so fast and reliable that you'll almost question whether they happened at all. The beautifully shaped crankarms borrow their styling from Dura-Ace and will complement and enhance the aesthetics of your bike.Hollowtech II TechnologyProviding the best balance of stiffness, strength, weight and rotating performance. The concept of Hollowtech II technology is focused on producing a superior crankset that will maximise a rider's power transfer. The rigidity of the crankset ensures pedalling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances over which the rider needs to pedal more. Naturally, Shimano strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. Hollowtech II technology is an ultra-lightweight hollow crankarm created by Shimano with the company's own proprietary forging technology that also maintains rigidity. The addition of Hollowtech II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedalling stability, allowing for more efficient power transfer.Features: Speed: 11 Speed Number of Chainrings: 2 Crank Construction: Hollowtech II (24mm spindle) Chainline: 43.5mm Q-Factor: 146mm Bolt Circle Diameter (BCD): 4x110mm asymmetric Bottom Bracket Included: No Redesigned crank arms for greater frame compatibility Lightweight crankarm design optimised for power-transfer efficiency Weight: 53/39T Option: 690g; 46/36T Option: 668gTechnologies: Lightweight crankarm design optimised for power-transfer efficiency. Minimal weight without sacrificing stiffness. Hollowtech II. Rider-tuned gear performance through various gear combinations. Redesigned FC for greater frame compatibility. Wider gear pitch increases clearance between chain and leading teeth, providing compatibility with frames of O.L.D. 135mm and 410mm chainstay length.Manufacturer's Part Numbers: 89222995 Black 46/36T 170mm 89222994 Black 53/39T 165mmBuy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Shimano Ultegra R8000 11 Speed Chainset w/o BBEagerly anticipated, the updated Shimano R8000 crankset has arrived. Featuring clear improvements in aesthetics and performance from the 6800 series, the Ultegra R8000 series has hugely benefited from the trickle-down technology of its big brother, the Dura-Ace R9000 model. This completely updated road bike chainset features lightweight crankarms, a hollow outer chainring, and a wider gear pitch for increased clearance on modern road frames that have wider rear dropouts and longer chainstays.Offering weight reduction without sacrificing stiffness, the Shimano Ultegra R8000 chainset enables a wide range of gear combinations to suit your every need. Paired with the updated front and rear derailleurs, your shifts will be so fast and reliable that you'll almost question whether they happened at all. The beautifully shaped crankarms borrow their styling from Dura-Ace and will complement and enhance the aesthetics of your bike.Hollowtech II TechnologyProviding the best balance of stiffness, strength, weight and rotating performance. The concept of Hollowtech II technology is focused on producing a superior crankset that will maximise a rider's power transfer. The rigidity of the crankset ensures pedalling efficiency while its weight, a key element of the crankset, you want light, aids in cycling longer distances over which the rider needs to pedal more. Naturally, Shimano strove for the optimum balance between the conflicting needs of stiffness while producing a lightweight crank. Hollowtech II technology is an ultra-lightweight hollow crankarm created by Shimano with the company's own proprietary forging technology that also maintains rigidity. The addition of Hollowtech II technology integrates the bottom bracket axle with the right crankarm for more stiffness and a weight savings to achieve a high-dimensional balance. Its outboard bottom bracket bearing system provides better weight distribution and more pedalling stability, allowing for more efficient power transfer.Features: Speed: 11 Speed Number of Chainrings: 2 Crank Construction: Hollowtech II (24mm spindle) Chainline: 43.5mm Q-Factor: 146mm Bolt Circle Diameter (BCD): 4x110mm asymmetric Bottom Bracket Included: No Redesigned crank arms for greater frame compatibility Lightweight crankarm design optimised for power-transfer efficiency Weight: 53/39T Option: 690g; 46/36T Option: 668gTechnologies: Lightweight crankarm design optimised for power-transfer efficiency. Minimal weight without sacrificing stiffness. Hollowtech II. Rider-tuned gear performance through various gear combinations. Redesigned FC for greater frame compatibility. Wider gear pitch increases clearance between chain and leading teeth, providing compatibility with frames of O.L.D. 135mm and 410mm chainstay length.Manufacturer's Part Numbers: 89222995 Black 46/36T 170mm 89222994 Black 53/39T 165mmBuy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
The XS Adventure Lightset (G2.0) from Gloworm is versatile, powerful and lightweight. Ideal for off-road adventures in low-light conditions and is suitable for mounting on your helmet or handlebars, this superb adventure light offers 2800-lumens of output with a max runtime of 1.5 hours on full power. And you can control its output using the Gloworm Link smartphone mobile app.2800 Lumens1.5 hours runtime at max brightnessWireless TX Remote (G2.0)Customisable Beam PatternMobile App CompatibilityDetachable Power Cable2800 Lumens (Real, not theoretical output)Gloworm Link Mobile App Compatible311g total system weight with battery pack/regular cable (Light 92g)Light Dimensions 27 x 68 x 38mm (HxWxD)Waterproof to IP673 x Cree XHP 35.2 emitters3 optic system (2 x spot/1 x Honeycomb installed)1.5 hr runtime on Maximum power2hr battery charge (with 20W Charger)Wireless TX RemotePower Pack 5 (10000 mAH Lithium Ion Fast Charge Battery)OLED Display on Power PackPower Bank CapabilityOverheat ProtectionThe ever-popular Gloworm XS has been paired with the Power Pack 5 to create the XS Adventure. This pairing allows a lighter weight setup without sacrificing light output. The XS is the perfect balance of weight and output making it light enough for the helmet and bright enough for the bars. Combine its 2800 lumens with the convenience of a wireless remote and Mobile App customisation and you ve got the perfect partner for your next after-hours escape.Gloworm Link Mobile App - Gloworm Link makes the customisation of your light simple and convenient. Link allows you to select between 1 and 4 light levels and the type of light pattern for each level- Fixed or flashing. You can program the intensity of the fixed beam from 1-100% or choose from one of three flashing patterns. Link will also provide current battery charge and diagnostic information.Default Settings:Low (20%) / Medium (70%) / High (100%)Special mode: Disrupted flash patternA special mode is activated by double-clicking the button when the light is off. This allows the user to conduct any outdoor activity without having to cycle through the special mode and having an interruption of a steady light beam. The light is turned off by holding the button for appx 2 seconds.
The Shimano R9100 11-Speed Cassette is part of the brand new R9100 Dura Ace range. Replacing the 9000 as Shimano s flagship groupset, the R9100 offers improved weight, exciting new features and superior performance. The R9100 is a super lightweight HG-EV cassette with a ridged carbon and alloy carrier to provide excellent shifting even under the most demanding gear changes, Hyperglide EV sprockets with a computer designed tooth configuration and contoured shift gates to ensure crisp and smooth shifting even under load and a close ratio gearing to allow for a more efficient use of energy through finer cadence control. The sprockets are all extensively cut away and drilled to reduce weight, the largest of which are mounted on lightweight alloy and carbon carriers and constructed from titanium to further reduce weight and increase rigidity without sacrificing strength. The R9100 has an alloy cassette lockring and features a nickel-plated finish for hard wearing resistance to corrosion. If you re looking to replace or upgrade your HG-EV cassette, you won t be disappointed with the Dura Ace R9100. Super Lightweight 11-Speed HG-EV Cassette with a Rigid Carbon and Alloy Carrier Hyperglide EV Sprockets with a Computer Designed Tooth ConfigurationContoured Shift GatesClose Ratio Gearing Largest Sprockets Mounted on Lightweight Alloy and Carbon Carriers 5 Largest Sprockets Are Made from Titanium Sprockets are Extensively Cut Away and Drilled Nickel-Plated Finish Offers Hard Wearing Resistance to CorrosionAlloy Cassette LockringFor Super Narrow 11-Speed HG-EV ChainsAverage Weight: 175 Grams (11-25 Tooth)
The Shimano R9100 11-Speed Cassette is part of the brand new R9100 Dura Ace range. Replacing the 9000 as Shimano s flagship groupset, the R9100 offers improved weight, exciting new features and superior performance. The R9100 is a super lightweight HG-EV cassette with a ridged carbon and alloy carrier to provide excellent shifting even under the most demanding gear changes, Hyperglide EV sprockets with a computer designed tooth configuration and contoured shift gates to ensure crisp and smooth shifting even under load and a close ratio gearing to allow for a more efficient use of energy through finer cadence control. The sprockets are all extensively cut away and drilled to reduce weight, the largest of which are mounted on lightweight alloy and carbon carriers and constructed from titanium to further reduce weight and increase rigidity without sacrificing strength. The R9100 has an alloy cassette lockring and features a nickel-plated finish for hard wearing resistance to corrosion. If you re looking to replace or upgrade your HG-EV cassette, you won t be disappointed with the Dura Ace R9100. Super Lightweight 11-Speed HG-EV Cassette with a Rigid Carbon and Alloy Carrier Hyperglide EV Sprockets with a Computer Designed Tooth ConfigurationContoured Shift GatesClose Ratio Gearing Largest Sprockets Mounted on Lightweight Alloy and Carbon Carriers 5 Largest Sprockets Are Made from Titanium Sprockets are Extensively Cut Away and Drilled Nickel-Plated Finish Offers Hard Wearing Resistance to CorrosionAlloy Cassette LockringFor Super Narrow 11-Speed HG-EV ChainsAverage Weight: 175 Grams (11-25 Tooth)
The Air rims are laced in a 3 cross configuration using double butted spokes on to a Drone cassette hub for one of the strongest and lightest wheels available. The hub has 3 individually sprung pawls with 150 points of contact which creates an almost instant engagement when you start to pedal as well as being one of the most unique sounding cassettes on the market. So if anyone is running a ‘tall order’ cassette you will instantly be able to recognise it from the unique sound alone. ###section### Product Specs WHEEL SIZE:20" HUB:Tall Order Drone Cassette AXLE:14mm DRIVE SIDE:Left Side Drive RIM:Tall Order Air SPOKES:TBC NIPPLES:TBC WEIGHT:TBC
The X2 Lightset (G2.0) from Gloworm is ideal for off-road riding, touring adventures far from home and cycling in low light conditions and bad weather. It provides 2000-lumens of illumination and a 4-hour battery runtime at full power - giving you exceptional visibility when travelling fast along single track trails, gravel routes and tow paths. And although it's ideal for off-road riding, it can be easily adjusted to suit all riding situations via the Gloworm Link mobile app.2000 Lumens (Real, not theoretical output)Gloworm Link Mobile App Compatible456g total system weight with battery pack/regular cable (Light 79g)Light Dimensions 29 x 49 x 38mm (HxWxD)Waterproof to IP672 x Cree XHP 35.2 emitters2 optic system (1 x spot/1 x Honeycomb installed)4hr runtime on Maximum power4hr battery charge (with 20W Charger)Wireless TX RemotePower Pack 10 (10000 mAH Lithium Ion Fast Charge Battery)OLED Display on Power PackPower Bank CapabilityOverheat ProtectionNote: the G2.0 lights are not compatible with G1.0 batteriesThe perfect bike light has evolved. The Gloworm X2 is now ready to tackle the roughest trails and longest nights with a 2000 lumen output and 4 hours run time making it the perfect companion for some serious nocturnal adventures. With the Gloworm Link mobile app, you can customise your light levels to suit your exact needs or simply plug and play. The Gloworm X2 (G2.0) is our most robust X2 yet, with a polycarbonate shell battery, fatigue-resistant/detachable cable and waterproof rating. You can take this light anywhere and everywhere and it will keep coming back for more.Gloworm Link Mobile App - Gloworm Link makes the customisation of your light simple and convenient. The link allows you to select between 1 and 4 light levels and the type of light pattern for each level- Fixed or flashing. You can program the intensity of the fixed beam from 1-100% or choose from one of three flashing patterns. Link will also provide current battery charge and diagnostic information.The Gloworm universal mounting system provides unrivalled flexibility, allowing your light to be mounted to the helmet, bike or even head strap.Each Gloworm light features optics that can be changed to suit the preferences of the rider. Depending on the intended, changing the optics in a light can greatly improve the overall user experience. For extra convenience, each light set features a selection of optics/alternative optics.The cables used on Gloworm Lights have been developed in conjunction with a specialist cable manufacturer. Cables on electronic equipment are an inherent weak point so we created our cable to reduce this inherency and give your product a longer usable life. Paired with the fatigue-resistant cable, are our new rubberized strain reliefs, designed to protect the cable as it enters the light. The combination of both components creates the perfect solution for cable protection in a high use outdoor environment.Gloworm's wireless button, the TX, is the ultimate in convenience and ease of use. Using RF technology, a rider can control one or more lights from a single remote. Additionally, control can be independent (one button for each light) or synchronised enabling control of one or both lights without the rider needing to lift their hands from the bar. Safety, Convenience and Efficiency.Each Gloworm Light features the ability to customise the light levels. While our lights have default settings and are ready to go out of the box, they can also be modified to suit your individual needs. Default programming features Low, Medium and High light levels, however, if this doesn t work for you then it s a relatively simple process to customise the light levels for your needs.Default Settings:Low (20%) / Medium (70%) / High (100%)Special mode: Disrupted flash pattern. A special mode is activated by double-clicking the button when the light is off. This allows the user to conduct any outdoor activity without having to cycle through the special mode and having an interruption of a steady light beam. The light is turned off by holding the button for appx 2 seconds.In the box:X2 Light Head (G2.0)Power Pack 1020W USB C Fast ChargerPower Cable Regular and LargeUniversal Light MountUniversal Helmet Mount35mm QR Bar Mount with Adapter for 31.8mmSpare Optics (Spot/Honeycomb/Wide)Hex Tool (3mm/2mm/1.5mm)USB C Adapter for Power PackUSB Type A Adapter for Power PackVelcro for Helmet MountingVelcro for Battery MountingTX Remote (G2.0)
The perfect bike light has evolved. The Gloworm X2 is now ready to tackle the roughest trails and longest nights with a 2000 lumen output and 4 hours run time – making it the perfect companion for some serious nocturnal adventures. With the Gloworm Link mobile app, you can customise your light levels to suit your exact needs or simply plug and play. The Gloworm X2 (G2.0) is our most robust X2 yet, with a polycarbonate shell battery, fatigue-resistant/detachable cable and waterproof rating. You can take this light anywhere and everywhere and it will keep coming back for more. Gloworm Link Mobile App Gloworm Link makes the customisation of your light simple and convenient. The link allows you to select between 1 and 4 light levels and the type of light pattern for each level- Fixed or flashing. You can program the intensity of the fixed beam from 1-100% or choose from one of three flashing patterns. Link will also provide current battery charge and diagnostic information. To ensure optimum performance, we recommend downloading the Gloworm Link Mobile App before first use. Download the iOS Version Download the Android Version The Gloworm universal mounting system provides unrivalled flexibility, allowing your light to be mounted to the helmet, bike or even head strap. Each Gloworm light features optics that can be changed to suit the preferences of the rider. Depending on the intended, changing the optics in a light can greatly improve the overall user experience. For extra convenience, each light set features a selection of optics/alternative optics. The cables used on Gloworm Lights have been developed in conjunction with a specialist cable manufacturer. Cables on electronic equipment are an inherent weak point – so we created our cable to reduce this inherency and give your product a longer usable life. Paired with the fatigue-resistant cable, are our new rubberized strain reliefs, designed to protect the cable as it enters the light. The combination of both components creates the perfect solution for cable protection in a high use outdoor environment. Gloworm's wireless button, the TX, is the ultimate in convenience and ease of use. Using RF technology, a rider can control one or more lights from a single remote. Additionally, control can be independent (one button for each light) or synchronised – enabling control of one or both lights without the rider needing to lift their hands from the bar. Safety, Convenience and Efficiency. Each Gloworm Light features the ability to customise the light levels. While our lights have default settings and are ready to go out of the box, they can also be modified to suit your individual needs. Default programming features Low, Medium and High light levels, however, if this doesn’t work for you then it’s a relatively simple process to customise the light levels for your needs. Default Settings: Low (20%) / Medium (70%) / High (100%). Special mode: Disrupted flash pattern A special mode is activated by double-clicking the button when the light is off. This allows the user to conduct any outdoor activity without having to cycle through the special mode and having an interruption of a steady light beam. The light is turned off by holding the button for appx 2 seconds. Key Features: 2000 Lumens 4 hours runtime at max brightness Wireless TX Remote (G2.0) Customisable Beam Pattern Mobile App Compatibility Detachable Power Cable What's Included: X2 Light Head (G2.0) Power Pack 10 20W USB C Fast Charger Power Cable Regular and Large Universal Light Mount Universal Helmet Mount 35mm QR Bar Mount with Adapter for 31.8mm Spare Optics (Spot/Honeycomb/Wide) Hex Tool (3mm/2mm/1.5mm) USB C Adapter for Power Pack USB Type A Adapter for Power Pack Velcro for Helmet Mounting Velcro for Battery Mounting TX Remote (G2.0) Features: 2000 Lumens (Real, not theoretical output) Gloworm Link Mobile App Compatible 456g total system weight with battery pack/regular cable (Light 79g) Light Dimensions 29 x 49 x 38mm (HxWxD) Waterproof to IP67 2 x Cree XHP 35.2 emitters 2 optic system (1 x spot/1 x Honeycomb installed) 4hr runtime on Maximum power 4hr battery charge (with 20W Charger) Wireless TX Remote Power Pack 10 (10000 mAH Lithium Ion Fast Charge Battery) OLED Display on Power Pack Power Bank Capability Overheat Protection Note: the G2.0 lights are not compatible with G1.0 batteries
The ever-popular Gloworm XS has been paired with the Power Pack 5 to create the XS Adventure. This pairing allows a lighter weight setup without sacrificing light output. The XS is the perfect balance of weight and output making it light enough for the helmet and bright enough for the bars. Combine its 2800 lumens with the convenience of a wireless remote and Mobile App customisation and you’ve got the perfect partner for your next after-hours escape. Gloworm Link Mobile App Gloworm Link makes the customisation of your light simple and convenient. Link allows you to select between 1 and 4 light levels and the type of light pattern for each level- Fixed or flashing. You can program the intensity of the fixed beam from 1-100% or choose from one of three flashing patterns. Link will also provide current battery charge and diagnostic information. To ensure optimum performance, we recommend downloading the Gloworm Link Mobile App before first use. Download the iOS Version Download the Android Version Default Settings: Low (20%) / Medium (70%) / High (100%). Special mode: Disrupted flash pattern A special mode is activated by double-clicking the button when the light is off. This allows the user to conduct any outdoor activity without having to cycle through the special mode and having an interruption of a steady light beam. The light is turned off by holding the button for appx 2 seconds. Key Features: 2800 Lumens 1.5 hours runtime at max brightness Wireless TX Remote (G2.0) Customisable Beam Pattern Mobile App Compatibility Detachable Power Cable What's Included: XS Light Head (G2.0) Power Pack 5 20W USB C Fast Charger Power Cable Regular and Large Universal Light Mount Universal Helmet Mount 35mm QR Bar Mount with Adapter for 31.8mm Spare Optics (Spot/Honeycomb/Wide) Hex Tool (3mm/2mm/1.5mm) USB C Adapter for Power Pack USB Type A Adapter for Power Pack Velcro for Helmet Mounting Velcro for Battery Mounting TX Remote (G2.0) Features: 2800 Lumens (Real, not theoretical output) Gloworm Link Mobile App Compatible 311g total system weight with battery pack/regular cable (Light 92g) Light Dimensions 27 x 68 x 38mm (HxWxD) Waterproof to IP67 3 x Cree XHP 35.2 emitters 3 optic system (2 x spot/1 x Honeycomb installed) 1.5 hr runtime on Maximum power 2hr battery charge (with 20W Charger) Wireless TX Remote Power Pack 5 (10000 mAH Lithium Ion Fast Charge Battery) OLED Display on Power Pack Power Bank Capability Overheat Protection Note: the G2.0 lights are not compatible with G1.0 batteries
Gloworm XS Adventure Lightset (G2.0)The XS Adventure Lightset (G2.0) from Gloworm is versatile, powerful and lightweight. Ideal for off-road adventures in low-light conditions and is suitable for mounting on your helmet or handlebars, this superb adventure light offers 2800-lumens of output with a max runtime of 1.5 hours on full power. And you can control its output using the Gloworm Link smartphone mobile app.The ever-popular Gloworm XS has been paired with the Power Pack 5 to create the XS Adventure. This pairing allows a lighter weight setup without sacrificing light output. The XS is the perfect balance of weight and output making it light enough for the helmet and bright enough for the bars. Combine its 2800 lumens with the convenience of a wireless remote and Mobile App customisation and you've got the perfect partner for your next after-hours escape. Gloworm Link Mobile AppGloworm Link makes the customisation of your light simple and convenient. Link allows you to select between 1 and 4 light levels and the type of light pattern for each level- Fixed or flashing. You can program the intensity of the fixed beam from 1-100% or choose from one of three flashing patterns. Link will also provide current battery charge and diagnostic information. To ensure optimum performance, we recommend downloading the Gloworm Link Mobile App before first use.Download the iOS VersionDownload the Android VersionDefault Settings: Low (20%) / Medium (70%) / High (100%) Special mode: Disrupted flash patternA special mode is activated by double-clicking the button when the light is off. This allows the user to conduct any outdoor activity without having to cycle through the special mode and having an interruption of a steady light beam. The light is turned off by holding the button for appx 2 seconds. Key Features: 2800 Lumens 1.5 hours runtime at max brightness Wireless TX Remote (G2.0) Customisable Beam Pattern Mobile App Compatibility Detachable Power CableWhat's Included: XS Light Head (G2.0) Power Pack 5 20W USB C Fast Charger Power Cable Regular and Large Universal Light Mount Universal Helmet Mount 35mm QR Bar Mount with Adapter for 31.8mm Spare Optics (Spot/Honeycomb/Wide) Hex Tool (3mm/2mm/1.5mm) USB C Adapter for Power Pack USB Type A Adapter for Power Pack Velcro for Helmet Mounting Velcro for Battery Mounting TX Remote (G2.0)Features: 2800 Lumens (Real, not theoretical output) Gloworm Link Mobile App Compatible 311g total system weight with battery pack/regular cable (Light 92g) Light Dimensions 27 x 68 x 38mm (HxWxD) Waterproof to IP67 3 x Cree XHP 35.2 emitters 3 optic system (2 x spot/1 x Honeycomb installed) 1.5 hr runtime on Maximum power 2hr battery charge (with 20W Charger) Wireless TX Remote Power Pack 5 (10000 mAH Lithium Ion Fast Charge Battery) OLED Display on Power Pack Power Bank Capability Overheat ProtectionNote: the G2.0 lights are not compatible with G1.0 batteriesPlease Note: to get the best performance out of our Gloworm light, Gloworm recommends that you update the product firmware. This can be completed using the Gloworm LINK App found in either Google Play or Apple Store. Please click here for detailed instructions on how to carry out this firmware update.Buy Gloworm Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.