Box Three Prime 9 Speed X-Wide GroupsetDesigned for fantastic off-road performance, this groupset delivers many of the same capabilities of its siblings yet it's built upon a simpler platform. The cassette is more accessible at 11-50T and fashioned without spiders. The derailleur exploits Box's Limited Slip clutch technology without the Tri-pack features. Shift easily with a comparable mechanism, although you'll forgo the hinged clamp and die-cast structure. And lastly, string it all together with a Prime 9 chain but without extravagant coatings. If you're looking to bring your 2/3 by bike into the 21st century, then level up with this group!Box Three Prime 9 CassetteThe Box Three cassette draws from both of its Box One and Box Two siblings to create a sensible all-rounder. All cogs are stamped from steel and subsequently, the larger ones are pinned to steel spiders. The main difference here versus Box Two is the use of additional weight-reducing holes on the cogs.Features: Material: Aluminium, Cold Rolled Steel Gear Ratio: 11 - 13 - 15 - 18 - 22 - 28 - 34 - 42 - 50 Box's Best All-Rounder Cassette Steel Stamped Cogs Steel Stamped Spiders Ultra-Wide Ratio with Consistent Progression Prime 9 Technology Compatible with HG Freehub Bodies Weight: 660gBox Three Prime 9 126 Link Chain PolishedThe Box Three chain is polished and then chemically treated to achieve a basic level of corrosion resistance. All Prime 9 chains have chamfered shifting edges, solid plates and solid pins to safeguard durability. Our unique inner link spacing is engineered to grab those modern wide/narrow chainrings. We chose to modernize the 9-speed platform due to the chain's spirited reputation.Features: Material: Hardened Alloy Steel Durable Hardened Solid Pin Prime 9 Technology Compatible with Modern Wide/Narrow Chainrings Weight: 312gBox Three Prime 9 X-Wide Rear DerailleurThe Box Three Rear Derailleur simplifies the features found on the Prime 9 Box One and Two rear derailleurs making for a fully-featured wallet-friendly rear derailleur. Including a Limited Slip Clutch, Sealed bearing pulleys and a solid construction Box Three Rear derailleurs are compatible with 11-46 and 11-50t derailleurs making it one of the most versatile derailleur offerings for Prime 9.Features: Material: Aluminium, Glass Fibre / Nylon Composite, Steel Box's Best All-Rounder Derailleur Limited Slip Clutch Bearing Pulleys Nylon Composite Knuckle Direct Channel Cable Stay Die Cast Linkages Stamped Inner and Outer Cage Prime 9 Technology Compatible with Standard Derailleur Hangers (Non Direct-Mount) Weight: 349gBox Three Prime 9 ShifterThe Box Three shifter makes good use of nylon composites in both top and bottom shells as well as the levers. Box Three is our performance and value tier. So this shifter sheds all the fancy trappings of the top 2 tiers but maintains their shifting characteristics. All Prime 9 shifters take advantage of the 9-speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. And the best part is? Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up.Features: Material: Glass Fibre / Nylon Composite, Steel Box's Best All-Rounder Shifter Extruded Clamp 2 Piece Pull Lever / Up to 3 Gears Per Shift Resin Top Shell Fast Action Release Lever Prime 9 Technology Weight: 128gCompatibility:• Multi Shift Option Not Intended for E-Bike Use.• Single Shift Option Recommended for E-Bike Use.FAQSHIFTERDoes the Box Three Prime 9 Shifter come with a cable? Yes. All Box Three Twin Lever Shifters come with a stainless steel shift cable.How do I remove the cap from the cable port to install a new cable? To remove it, use a Phillips head screwdriver and turn it counter-clockwise a quarter turn You can then push the cap out by applying pressure to the cable from the other side. Please Note: The Cable Port is not a screw that un-threads from the cable port, if you turn the cable port screw more than 90 degrees damage may occur.Is the Box Three Prime 9 Shifter compatible with other 9 speed derailleurs? No, traditional 9 speed systems use a Cable Pull that is not compatible with prime 9.DERAILLEURAre Box Prime 9 derailleurs compatible with Shimano "direct mount" hangers? No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.Is the Box Three Prime 9 Derailleur compatible with other 9 speed components? No, traditional 9 speed systems use a Cable Pull that is not compatible with Prime 9.Are Box Prime 9 derailleurs compatible with drop bar (road) shifters? No, Box Prime 9 derailleurs are not currently compatible with drop bar shifters, but we do offer a clamp for our shifters to mount on some 31.8mm drop handle bars.How should I clean my Box Three Prime 9 derailleur? We suggest removing the derailleur from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.CASSETTEWill the Box Three Prime 9 Cassette fit on a wheel with a SRAM XD Driver? No this will only work with a HG splined Shimano 9-10-11 speed freehub body.Is the Box Three Prime 9 Cassette compatible with other 9 speed drivetrains? No, The Box Three Prime 9 Cassette is optimized for Box Prime 9 drivetrains and running other component variations can result in poor performance.How should I clean my Box Three Prime 9 Cassette? We suggest removing the cassette from the wheel and using a soft bristle brush with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.CHAINIs the Box Three Prime 9 Chain compatible with other 9 speed drivetrains? Yes, All Box prime 9 chains have standard external geometry that will work with most existing 9 speed drivetrains.Is the Box Three Prime 9 Chain Compatible with any wide narrow chainring? No, Box Prime 9 chains are compatible with most 11-speed wide narrow chainrings but there are some chainrings that can result in poor performance. We recommend the following 11 speed wide/narrow chainrings for best performance, Wolftooth Components, Raceface, One Up Components, Absolute Black.How should I clean my Box Two Prime 9 Chain? We suggest removing the chain from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.Buy Box Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Box Three Prime 9 Speed Drivetrain GroupsetThe Box Three groupset offers the same capability as its top-tier siblings but it's built around a simpler platform. The cassette is more accessible at 11-46T and fashioned without a spider. The rear mech exploits Box's Limited Slip clutch technology without the Tri-pack features. This allows you to shift easily with a comparable mechanism, although you'll forgo the hinged clamp and die-cast structure. Lastly, it's strung together with a Prime 9 chain but without extravagant coatings. If you're looking to bring your mountain bike into the 21st century, then level up with this group.Box Three Prime 9 ShifterThe Box Three shifter makes good use of nylon composites in both top and bottom shells as well as the levers. Box Three is our performance and value tier. So this shifter sheds all the fancy trappings of the top 2 tiers but maintains their shifting characteristics. All Prime 9 shifters take advantage of the 9-speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. And the best part is? Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up.Features: Material: Glass Fibre / Nylon Composite, Steel Extruded Clamp 2 Piece Pull Lever / Up to 3 Gears Per Shift Resin Top Shell Fast Action Release Lever Prime 9 Technology Multi Shift Option Not Intended for E-Bike Use Single Shift Option Recommended for E-Bike Use Weight: 128gBox Three Prime 9 Wide Rear DerailleurThe Box Three Rear Derailleur simplifies the features found on the Prime 9 Box One and Two rear derailleurs making for a fully-featured wallet-friendly rear derailleur. Including a Limited Slip Clutch, Sealed bearing pulleys and a solid construction Box Three Rear derailleurs are compatible with 11-46 derailleurs making it one of the most versatile derailleur offerings for Prime 9.Features: Material: Aluminium, Glass Fiber / Nylon Composite, Steel Limited Slip Clutch Bearing Pulleys Nylon Composite Knuckle Direct Channel Cable Stay Die Cast Linkages Stamped Inner and Outer Cage Prime 9 Technology Compatible with Standard Derailleur Hangers (Non Direct-Mount) Weight: 349gBox Three Prime 9 Cassette The Box Three cassette draws from both of its Box One and Box Two siblings to create a sensible all-rounder. All cogs are stamped from steel and subsequently, the larger ones are pinned to steel spiders. The main difference here versus Box Two is the use of additional weight-reducing holes on the cogs.Features: Material: Aluminium, Cold Rolled Steel Steel Stamped Cogs Steel Stamped Spiders Ultra-Wide Ratio with Consistent Progression Prime 9 Technology Compatible with HG Freehub Bodies Not Intended for E-Bike Use Weight: 660gBox Three Prime 9 126 Link Chain PolishedThe Box Three chain is polished and then chemically treated to achieve a basic level of corrosion resistance. All Prime 9 chains have chamfered shifting edges, solid plates and solid pins to safeguard durability. Our unique inner link spacing is engineered to grab those modern wide/narrow chainrings. We chose to modernize the 9-speed platform due to the chain's spirited reputation.Features: Material: Hardened Alloy Steel Durable Hardened Solid Pin Prime 9 Technology Compatible with Modern Wide/Narrow Chainrings Weight: 312gFAQDoes the Box Three Prime 9 Shifter come with a cable? Yes. All Box Three Twin Lever Shifters come with a stainless steel shift cable.How do I remove the cap from the cable port to install a new cable? To remove it, use a Phillips head screwdriver and turn it counter-clockwise a quarter turn You can then push the cap out by applying pressure to the cable from the other side. Please Note: The Cable Port is not a screw that un-threads from the cable port, if you turn the cable port screw more than 90 degrees damage may occur.Is the Box Three Prime 9 Shifter compatible with other 9 speed derailleurs? No, traditional 9 speed systems use a Cable Pull that is not compatible with prime 9.DERAILLEURAre Box Prime 9 derailleurs compatible with Shimano "direct mount" hangers? No, Shimano direct mount hangers are proprietary and are not compatible with Box derailleurs.Is the Box Three Prime 9 Derailleur compatible with other 9 speed components? No, traditional 9 speed systems use a Cable Pull that is not compatible with Prime 9.Are Box Prime 9 derailleurs compatible with drop bar (road) shifters? No, Box Prime 9 derailleurs are not currently compatible with drop bar shifters, but we do offer a clamp for our shifters to mount on some 31.8mm drop handle bars.How should I clean my Box Three Prime 9 derailleur? We suggest removing the derailleur from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.How do I make adjustments to the derailleur? Please see our installation video at boxcomponents.com/service.CASSETTEWill the Box Three Prime 9 Cassette fit on an wheel with a Sram XD Driver? No this will only work with a HG splined Shimano 9-10-11 speed freehub body.Is the Box Three Prime 9 Cassette compatible with other 9 speed drivetrains? No, The Box Three Prime 9 Cassette is optimized for Box Prime 9 drivetrains and running other component variations can result in poor performance.How should I clean my Box Three Prime 9 Cassette? We suggest removing the cassette from the wheel and using a soft bristle brush with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.CHAINIs the Box Three Prime 9 Chain compatible with other 9 speed drivetrains? Yes, All Box prime 9 chains have standard external geometry that will work with most existing 9 speed drivetrains.Is the Box Three Prime 9 Chain Compatible with any wide narrow chainring? No, Box Prime 9 chains are compatible with most 11-speed wide narrow chainrings but there are some chainrings that can result in poor performance. We recommend the following 11 speed wide/narrow chainrings for best performance, Wolftooth Components, Raceface, One Up Components, Absolute Black.How should I clean my Box Two Prime 9 Chain? We suggest removing the chain from the bike and using a soft bristle brush or rag with soapy water or a mild de-greaser. We do not recommend pressure washing, strong solvents or de-greasers as they could degrade the surface coating.Buy Box Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Box One Prime 9 Speed ShifterThis 9 speed shifter is the only shifter on the market that comes factory stock with a hinged (and machined) clamp. It's top of the line model and comes packed with other features such as a durable cast aluminium pull lever and top shell for exceptional strength on the mountain bike trails.All Prime 9 shifters take advantage of the 9 speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. And the best part is? Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up.FAQ:Does the Box One Prime 9 Shifter come with a cable? Yes. All Box One Twin Lever Shifters come with a stainless steel shift cable.How do I remove the cap from the cable port to install a new cable? To remove it, use a Phillips head screwdriver and turn it counter-clockwise a quarter turn You can then push the cap out by applying pressure to the cable from the other side. Please Note: The Cable Port is not a screw that un-threads from the cable port, if you turn the cable port screw more than 90 degrees damage may occur.Is the Box One Prime 9 Shifter compatible with other 9 speed derailleurs? No, traditional 9 speed systems use a Cable Pull that is not compatible with prime 9.Features: Material: Glass Fibre / Nylon Composite, Steel, Aluminum Alloy with Hard Onyx finish Lightweight Hinged & Machined Clamp 1 Pc Pull Lever / Up to 3 Gears Per Shift Fast Action Release Lever Die Cast Top Shell Prime 9 TechnologyCompatibility: Box One Prime 9 11-50T Cassette Black Box Two Prime 9 11-50T Cassette Black Box Three Prime 9 Cassette Black Box One Prime 9 Chain 126L DLC Black Box Two Prime 9 126 Link Chain Nickel Box Three Prime 9 126 Link Chain Polished Box One Prime 9 Rear Derailleur Box Two Prime 9 X-Wide Rear Derailleur Black Box Three Prime 9 X-Wide Rear Derailleur Black Multi Shift Option Not Intended for E-Bike Use Single Shift Option Recommended for E-Bike UseWeight: 130gBuy Box Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Box Three Prime 9 Speed ShifterSpecifically developed for mountain bike riding, this 9 speed shifter gives you smooth and reliable shifting operation on every MTB ride. It makes good use of nylon composites in both its top and bottom shells as well as in the lever. Box Three is Box's performance and value tier, so this shifter sheds all the fancy trappings of the top two tiers but still maintains their incredible shifting characteristics.All Prime 9 shifters take advantage of the 9 speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. And the best part is? Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up.FAQDoes the Box Three Prime 9 Shifter come with a cable? Yes. All Prime 9 Twin Lever Shifters come with a stainless steel shift cable.How do I remove the cap from the cable port to install a new cable? To remove it, use a Phillips head screwdriver and turn it counter-clockwise a quarter turn You can then push the cap out by applying pressure to the cable from the other side. Please Note: The Cable Port is not a screw that un-threads from the cable port if you turn the cable port screw more than 90 degrees damage may occur.Is the Box Three Prime 9 Shifter compatible with other 9 speed derailleurs? No, traditional 9 speed systems use a Cable Pull that is not compatible with Prime 9.Features: Material: Matte Black Finish: Glass Fibre / Nylon Composite, Steel Box's Best All-Rounder Shifter Extruded Clamp 2 Piece Pull Lever / Up to 3 Gears Per Shift (two options available) Resin Top Shell Fast Action Release Lever Prime 9 Technology Multi Shift Option Not Intended for E-Bike Use Single Shift Option Recommended for E-Bike Use Compatibility: Box One Prime 9 11-50T Cassette Black Box Two Prime 9 11-50T Cassette Black Box Three Prime 9 Cassette Black Box One Prime 9 Chain 126L DLC Black Box Two Prime 9 126 Link Chain Nickel Box Three Prime 9 126 Link Chain Polished Box One Prime 9 Rear Derailleur Box Two Prime 9 X-Wide Rear Derailleur Black Box Three Prime 9 X-Wide Rear Derailleur Black Weight: 128gBuy Box Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Box Four 8 Speed ShifterThis Box Four shifter uses features that aren't strikingly different from the Box three model. The main difference is its 8 speed platform, which has been modernised in the same way as Box did with the 9 speed Prime 9 model. Just like the Prime 9 model, the Box Four shifter takes advantage of the "less is more" theme and exploits durability, simplicity, and reliability.FAQ:Does the Box Four Shifter come with a cable? Yes. All Box One Twin Lever Shifters come with a stainless steel shift cable.How do I remove the cap from the cable port to install a new cable? To remove it, use a Phillips head screwdriver and turn it counter-clockwise a quarter turn You can then push the cap out by applying pressure to the cable from the other side. Please Note: The Cable Port is not a screw that un-threads from the cable port, if you turn the cable port screw more than 90 degrees damage may occur.Is the Box Four Shifter compatible with other 8 speed derailleurs? No, traditional 8 speed systems use a Cable Pull that is not compatible with Box Four components.Features: Material: Glass Fibre / Nylon Composite, Steel, matte finish Use: MTB Extruded Clamp 2 Piece Pull Lever / Up to 3 Gears Per Shift Resin Top Shell Fast Action Release Lever Not Intended for E-Bike UseCompatibility: Box Four 8-Speed Wide Rear Derailleur Black Box Four 8-Speed 116 Link Chain Natural Box Four 8-Speed 11-42T Cassette Black Box Four 8-Speed Wide/Narrow Chainring 104BCD 32T BlackWeight: 128gBuy Box Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Box Two Prime 9 Speed ShifterClassed as Box's most durable shifter, this 9 speed model features a hard-wearing two-piece resin and steel lever construction, which makes it more than capable of handling all the intensity from exploring the MTB trails.The Box Two shifter is the only shifter on the market (other than our Box One) that comes factory stock with a hinged clamp. Box Two is our performance tier so this shifter still maintains the durable cast aluminium top shell but trades out the Box One's 1-piece pull-lever for a 2-piece resin and steel variant. All Prime 9 shifters take advantage of the 9-speed's inherent durability, simplicity, and reliability. Not only is the shifter mechanism joyfully simplified, but fewer shifts are needed for every mile of travel. And the best part is? Prime 9 is also terribly forgiving so you won't have to constantly adjust your set-up.FAQ:Does the Box Two Prime 9 Shifter come with a cable? Yes. All Prime 9 Twin Lever Shifters come with a stainless steel shift cable.How do I remove the cap from the cable port to install a new cable? To remove it, use a Phillips head screwdriver and turn it counter-clockwise a quarter turn You can then push the cap out by applying pressure to the cable from the other side. Please Note: The Cable Port is not a screw that un-threads from the cable port if you turn the cable port screw more than 90 degrees damage may occur.Is the Box Two Prime 9 Shifter compatible with other 9 speed derailleurs? No, traditional 9 speed systems use a Cable Pull that is not compatible with Prime 9.Features: Material: Glass Fibre / Nylon Composite, Steel, Aluminum Alloy Finish: Matte Onyx Box's Most Durable Shifter Hinged and Extruded Clamp 2 pc Pull Lever / Up to 3 Gears Per Shift* (two options available) Die Cast Top Shell Fast Action Release Lever Prime 9 TechnologyCompatibility: Box One Prime 9 11-50T Cassette Black Box Two Prime 9 11-50T Cassette Black Box Three Prime 9 Cassette Black Box One Prime 9 Chain 126L DLC Black Box Two Prime 9 126 Link Chain Nickel Box Three Prime 9 126 Link Chain Polished Box One Prime 9 Rear Derailleur Box Two Prime 9 X-Wide Rear Derailleur Black Box Three Prime 9 X-Wide Rear Derailleur Black Multi Shift Option Not Intended for E-Bike Use Single Shift Option Recommended for E-Bike UseWeight: 135gBuy Box Components from Chain Reaction Cycles, the World's Largest Online Bike Store.
Bolle Bolt 2.0 Titanium Ultraviolet SunglassesClassic sport eyewear taken to the next level, the Bolle Bole 2.0 Titanium Ultraviolet Sunglasses deliver enhanced performance with a high grade TR90 nylon frame and Bolle’s VOLT+ ultraviolet lens that enhances colour by 30%.The Bolt 2.0 Sunglasses feature Bolle’s VOLT+ lenses which engineered with revolutionary polarised technology, offering high contrast, improving colour perception by up to 30%. The lenses provide 100% UV protection, and they shield your vision with anti-fog, anti-scratch, hydrophobic and oleophobic lens treatments.The half-rim frame is constructed with high-performance TR90 Nylon which is incredibly lightweight, flexible and durable. Stabilising the fit, the glasses also feature Thermogrip® rubber components which keep the sunglasses in position against sweat and environmental moisture.Lens SpecificationsLens Type: VOLT+ Ultraviolet Cat 3Tint Base: GreyTransmission: 16%Features100% UV protectionLenses enhance colour by 30%Lenses increase depth perceptionHigh performance polarisationAnti-fog lens treatmentAnti-scratch lens treatmentOleophobic treatmentHydrophobic treatmentThermogrip® rubber componentsTR90 Nylon frame constructionSnap hingeAdjustable nosepadS-curved templesBuy Bolle Sport Sunglasses from Chain Reaction Cycles, the World's Largest Online Bike Store.
The Bolt 2.0 Sunglasses stay true to the original design but with the latest specs and design to enhance the performance. The lenses protect your vision with an incredibly rugged construction plus anti-fog, anti-scratch, Oleophobic, and Hydrophobic lens treatments – ensuring clear vision in the harshest of environments. The TR90 nylon frame is flexible, lightweight and incredibly durable for advanced comfort throughout your ride. The nosepads and temples are formed with specialist Thermogrip® which both cushions and stabilises the fit while the adjustable nosepads provides a customised feel.
Meet the Roadmachine: the bike that truly does it all. Rooted in endurance, the frame has been revised to perfection and added more compliance-boosting attributes to make this bike your go-to choice for all-day adventures. As our highest performing all-rounder, it’s designed to go the distance with resolve. After all, what use is a road without the Roadmachine?
The Roadmachine’s frame and fork are constructed with our Premium Carbon, using TCC Endurance technology. Internal cable routing replaces the Roadmachine 01’s ICS technology, but the Premium Carbon D-Shape seatpost remains, for optimum seated compliance. This model has an ICS1 stem, compact aluminium bar, and Shimano’s latest Ultegra Di2 12-speed compact groupset, with CRD-321 Carbon tubeless ready wheels and 28mm tires for comfort and traction.
With a 4-way stretch mesh back, the Union Gloves give you excellent flexibility, ensuring you'll always enjoy plenty of dexterity and comfort. The breathability of the mesh also prevents sweat build-up and this is complemented by mesh finger gussets, boosting airflow for added warm-weather performance. The palm is kept slim and minimal, giving you the ideal combination of secure grip, all-around protection and a barely-there feel that offers superb levels of terrain feedback. It's also ventilated, letting moisture escape before discomfort sets in. And when you need to pull on the brake levers, silicone prints offer a non-slip grip while touchscreen compatibility makes it easy to control your touchscreen devices.
Bleed Kit Workshop Edition Shimano Brake Bleed KitThis Workshop edition bleed kit includes a TPX syringe for easier handling besides everything for bleeding absolutely all types of Shimano hydraulic brakes. Oil not included.CompatibilityThis kit is compatible with absolutely all Shimano hydraulic brakes (XTR, XT, Saint, Zee, SLX, Deore, Alivio, Acera, Alfine, Metrea) including Shimano drop bar hydraulic brakes (Dura-Ace, Ultegra, 105, Tiagra, GRX).Features: Lever end 30ml transparent funnel (syringe body) with brass M5 thread Threaded stainless steel plug (oil stopper) with hanger Caliper end 20 ml TPX syringe with a long-lasting tube Stainless steel tube insert providing a guided fitment between the tube and the bleed nipple Clamp for easier gravity bleed Base for funnel and adapters with spare O-ring studs at the bottom Bleed block for Shimano flat bar hydaulic brakes (2 or 4 piston type) Bleed block for Shimano drop bar hydraulic brakes Rubberised one side hook and loop strap, 25 cm (for securing the caliper syringe to frame or fork) 7mm wrench Brass adapter for Shimano drop bar hydraulic brakes (Dura-Ace, Ultegra, 105, GRX, Tiagra) Spare O-rings (4 pcs)Manufacturer's Part Number: BK-28077 All Shimano 2012+Buy Bleed Kit Components from Chain Reaction Cycles, the World's Largest Online Bike Store.