Chain Reaction UK

Chain Reaction UK Rating
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About Chain Reaction UK
Chain Reaction Cycles (CRC) are based in Doagh, in Northern Ireland, originally started out as Ballynure Cycles in 1984 and changing their name after a move to a new shop in 1989. In 2011 they opened a 10,000sq ft standalone retail store in Belfast, Northern Ireland. By 2013 they had become the largest online bike shop in the world!

CRC exists to deliver a world class shopping experience to cyclists around the globe, offering the lowest prices on everything you need to feed your cycling habit, and delivering directly to you with no fuss.
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We currently have 298 products listed for Chain Reaction UK, that's 298 opportunities for you to save money!

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Chain Reaction UK have 298 Prime products listed

Prime BB30 Bottom Bracket - Black - BB30}, Black
  • £19.99

Prime BB30 Bottom BracketWhen bearings have to be pressed directly into the frame, it is of the upmost importance that the bearings are of the highest quality - The bearings in this Prime BB30 Bottom Bracket are exactly that.Our bearings are highly polished so they spin smoother for longer, while the seals protect the bearings and races from dirt and debris that try to make their way in.Features: Bearing: Premium Stainless Steel Frame Type: BB30 Crank Type: SRAM (30mm) or Shimano/FSA (24mm) when used with the Prime Bottom Bracket Adaptor (PF30 - Shimano) Weight: 56gBuy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime BB86 Bottom Bracket (Shimano) - Black - BB86 - 24mm Spindle, Black
  • £19.99
  • RRP £24.99
  • Saving you £20

Prime BB86 Bottom Bracket (Shimano)The Prime BB86 Bottom Bracket features the finest materials available to make it incredibly tough. Using a combination of fibre and plastic, we were able to precisely machine the shell, so that it fits perfectly in the frame, and eliminates any noise.Water RepellentTo make our BB86 Bottom Bracket even more durable, we've used special seals, which keep moisture out while keeping drag to a minimum. A tube is also included to further enhance water repellence.Our bottom brackets are hand-assembled, so we can ensure that all our BBs are finished to perfection to keep your bike riding smoother for longer.Ceramic BearingsWith our ceramic bearing option, friction is reduced meaning less energy is required to turn the cranks, they're also more durable, and don't rust so they'll require less maintenance. If you're a rider seeking out every possible advantage over the competition, the ceramic option can help take your performance to the next level.Features: Bearing: Premium Stainless Steel & Ceramic options available Frame Type: BB86 Crank Type: Shimano/FSA (24mm) Weight: 75g (Steel Bearings), 70g (Ceramic Bearings)Buy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime BB86 Bottom Bracket (SRAM - GXP) - Black - BB86 - SRAM GXP, Black
  • £19.99
  • RRP £24.99
  • Saving you £20

Prime BB86 Bottom Bracket (SRAM - GXP)The Prime BB86 Bottom Bracket features the best materials available to make it super tough. Using a combination of fibre and plastic, we were able to precisely machine the shell, so that it fits perfectly in the frame, and eliminates any noise.Water RepellentTo make our BB86 Bottom Bracket even more durable, we've used special seals, which keep moisture out while keeping drag to a minimum. A tube is also included to further enhance water repellence.Our bottom brackets are hand-assembled, so we can ensure that all our BBs are finished to perfection to keep your bike riding smoother for longer.Ceramic BearingsWith our ceramic bearing option, friction is reduced meaning less energy is required to turn the cranks, they're also more durable, and don't rust so they'll require less maintenance. If you're a rider seeking out every possible advantage over the competition, the ceramic option can help take your performance to the next level.Features: Bearing: Premium Stainless Steel & Ceramic options available Frame Type: BB86 Crank Type: SRAM/Rotor (24/22mm) Weight: 82g (Steel Bearings), 78g (Ceramic Bearings)Buy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Shimano Carbon Road Disc Brake Pads - Race Compound}
  • £19.99

Prime Shimano Carbon Road Disc Brake PadsWhether you're racing through the smooth city streets or descending an alpine pass, these stunning disc brake pads deliver amazing braking performance on every run. They feature a fantastic blended carbon and steel backplate construction which is 27% lighter than traditional steel backplates. This means you'll benefit from their fast and precise stopping power without any unnecessary grams holding you back as you push for victory.Prime Racing CompoundAll set for adrenaline-fuelled road events, these superb components are kitted out with Prime's Race compound. This features a higher percentage of kevlar for outstanding strength and durability while vibrations which cause brake squeal are dramatically reduced. Multiple hard and soft metals have also been added to this compound for less heat build-up and superior modulation, so you can conquer every road with precision and power. Features: Backplate Material: Carbon and Steel Compound: Prime Race Compound Compatibility: Shimano disc brake systems Use: RoadBuy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Doyenne Endurance Saddle - Black - 140mm}, Black
  • £19.99
  • RRP £24.99
  • Saving you £20

Prime Doyenne Endurance SaddleThis endurance-focused saddle comes equipped with a waterproof microfibre cover for reliable performance in all-weather conditions. Developed to keep you supported over long distances and many hours on your road bike, Prime has also kitted out this model with a nylon fibre base, which ensures maximum stiffness and strength without adding any unnecessary excess grams to your ride. Another highlight is its titanium alloy rails which provide a secure hold to your seatpost, while its chromium nitride (CrN) coating delivers additional wear resistance and protection against corrosion.Endurance Road Saddle with Titanium Alloy RailsThe Prime Doyenne Endurance saddle features titanium alloy rails coated with chromium nitride (CrN). These offer exceptional tensile strength, stiffness and corrosion resistance at an extremely low weight. The reduced weight helps you conserve energy as you climb and accelerate, and ultimately saves crucial seconds on your time.Crn/Ti rails are also highly resistant to flexing and deforming. This makes them far less likely to bend or creak as you ride. The seat rails also feature measurement markers, which help you adjust the fore/aft position of your saddle accurately to achieve an efficient and ergonomic pedalling stance.Prime Saddle Integration (PSI)PSI allows you to clip PSI accessories into the saddle base to allow for sleek integration.Features: Cover Material: Waterproof Microfibre Shell Material: Nylon Fibre Rails Material: Titanium Alloy with a Chromium Nitride (CrN) coating Use: Road Size: Narrow: 140x280mm (without cut-out); Wide: 148x280mm (with cut-out) PSI Compatible Rail fore/aft measurement markers Weight: Narrow Option: 240g; Wide Option: 277gBuy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Aerobar Bike Computer Mount - Black, Black
  • £19.99

Prime Aerobar Bike Computer MountThis computer mount attaches to your road bike's aerobars, so you can track your performance on the move. It features an adjustable arm that extends up to 15mm, in 5mm increments, which puts your cycle computer at the centre of your vision. This makes it easy to view your GPS data as you move. Prime has also kitted out this version with a tough aluminium construction, which makes it more than capable of handling all the intensity that comes with long distance road bike journeys. Features: Material: CNC-machined Aluminium Computer Compatibility: 1/4 turn Garmin computers and watches, Wahoo and Cateye computers Arm Adjustability: Arm extends up to 15mm, in 5mm increments to centre your computer Aerobar Compatibility: Fits 22.2mm diameter aerobars Includes: Hardware and instructions Weight: 38g (approx)Buy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime RD010-R010 Anti Bite Guard Freehub Body
  • £19.99
  • RRP £24.99
  • Saving you £20

Prime RD010-R010 Anti Bite Guard Freehub BodyThis lightweight CNC alloy freehub body features an integrated reinforced steel rib to eliminate damage from cassette sprockets. Additional features include 2x Premium Japanese sealed cartridge bearings and a grease port for home maintenance, which will prolong the life of the bearings.Genuine Prime replacement freehub body with ABG technology for RD010 & R010 hubs. Lightweight CNC alloy constructionHigh quality Japanese double sealed cartridge bearingsABG (Anti Bite Guard) technologyGrease portIncludes pawls and springBuy Prime Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime R020 Anti Bite Guard Freehub Body
  • £19.99
  • RRP £24.99
  • Saving you £20

Prime R020 Anti Bite Guard Freehub BodyThis lightweight CNC alloy freehub body has an integrated reinforced steel rib to eliminate damage from cassette sprockets. Additional features include 2x Premium Japanese sealed cartridge bearings and a grease port for home maintenance which will prolong the life of the bearings. Genuine Prime replacement freehub body with ABG technology for R020 hubs.Lightweight CNC alloy constructionHigh quality Japanese double sealed cartridge bearingsABG (Anti Bite Guard) technologyGrease portIncludes pawls and springBuy Prime Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime RD020 Anti Bite Guard Freehub Body
  • £19.99
  • RRP £24.99
  • Saving you £20

Prime RD020 Anti Bite Guard Freehub BodyThis lightweight CNC alloy freehub body has an integrated reinforced steel rib to eliminate damage from cassette sprockets. Additional features include 2 x Premium Japanese sealed cartridge bearings and a grease port for home maintenance, which will prolong the life of the bearings.Genuine Prime replacement freehub body with ABG technology for RD020 hubs.Lightweight CNC alloy constructionHigh quality Japanese double sealed cartridge bearingsABG (Anti Bite Guard) technologyGrease portIncludes pawls and springBuy Prime Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime RD010 - RD020 Freehub Body - Campagnolo
  • £19.99
  • RRP £24.99
  • Saving you £20

Prime RD010 - RD020 Freehub Body - CampagnoloThe Prime RD020 Freehub Body is a lightweight CNC alloy freehub body for Campagnolo standard cassettes. Additional features include 2 x Premium Japanese sealed cartridge bearings and a grease port for home maintenance, which will prolong the life of the bearings. Genuine Prime replacement freehub body with Campagnolo standard for RD010 & RD020 hubs.Lightweight CNC alloy constructionHigh quality Japanese double sealed cartridge bearingsGrease portIncludes pawls and springSuitable for RD010 & RD020 hubsBuy Prime Accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Carbon Bike Bottle Cage - Black, Black
  • £19.99
  • RRP £24.99
  • Saving you £20

Prime Carbon Bike Bottle CageStyle and substance combine with the Prime Carbon Bottle Cage, as not only will your bottle stay firmly in place, it will look great while doing so. Impressively strong despite being fairly lightweight, this cage assures no fear of drops or launches, whatever the terrain. Rigid enough to hold a full bottle, yet flexible enough for efficient and easy removal, this is a great looking carbon fibre cage, suitable for any frame and any ride.    Please Note: Mounting bolts are sold separately.Features: Material: Carbon Fibre Compatibility: Suitable for all frames Maximum Recommeneded Bottle Size: 750ml Weight: 24 gBuy Prime accessories from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Gravel Comfort Bar Tape - Black, Black
  • £21.99

Prime Gravel Comfort Handlebar TapeWhether you're adventuring into the countryside or commuting from A to B on the back roads, this handlebar tape offers smooth and reliable grip on every ride. It features Prime's Super Anti-Slippery Technology, which allows you to benefit from its superior grip in all weather conditions. Prepared for the elements, this model comes complete with anodised alloy screw-in bar end plugs and finishing strips, making them resistant to corrosion. One final benefit is this version's 3.5mm thickness, which soaks up vibrations and shocks from the road and gives you a smoother riding experience.In The Box 2x Rolls2x Finishing Strips2x Anodised alloy screw in bar end plugFeatures: Embossed Prime logos Super Anti-Slippery Technology - grippy even when wet 3.5mm thick Shockproof Silicone Gel for added comfort Anodised alloy screw in bar end plug Weight: 115g/pc (230g/set) Buy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Single Wheel Bag - Black, Black
  • £21.99
  • RRP £24.99
  • Saving you £12

Prime Single Wheel BagPrime's Single Wheel Bag is ideal for storing or transporting your favourite road bike wheels.Bike wheels can be expensive, so whether you're a travelling cyclist, triathlete or mechanic, protect your investment with the durable and stylish Prime Single Wheel Bag.Features:Material: 600D Polyester, 210D NylonInternal accessories pocketVelcro straps for securing the wheelLarge zipped openingCarry handleName card holderYKK zipperDimensions: 70cm x 70cmBuy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Center Lock Disc Brake Rotor - Silver - 160mm}, Silver
  • £24.99
  • RRP £29.99
  • Saving you £17

Prime Center Lock Disc Brake RotorThis superb disc brake rotor is specifically designed for MTB use as it offers optimal stopping performance and heat dissipation in wet and dry conditions. Ready for fast and rebellious downhill runs, this rock-solid component features a Japanese SUS-410 stainless steel braking band construction. This makes it more than capable of handling all the rowdiness that comes with diving into corners and blasting across the woodland with power and poise.Heat Resistant MTB RotorEngineered for top-tier braking modulation and efficiency, this fantastic component manages heat build-up during extended periods of braking. This allows you to enjoy an improved stopping experience while maintaining your momentum on tricky trail sections. One final highlight is this sleek version can be paired with any of Prime's disc brake pads with race compound for maximum performance and a reduced brake squeal. Ideal for improving performance on any Center Lock wheelset.Please Note: Prime lock rings not included but are sold separately.Features: Braking Band Material: SUS-410 Stainless Steel Spider Material: 7075 Alloy Use: MTBThickness: 1.8-1.85mmEdge: ChamferedDesign: Unique braking band pattern designBuy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Center Lock Disc Brake Rotor - Silver - 140mm}, Silver
  • £24.99
  • RRP £29.99
  • Saving you £17

Prime Center Lock Disc Brake RotorThis superb disc brake rotor is specifically designed for MTB use as it offers optimal stopping performance and heat dissipation in wet and dry conditions. Ready for fast and rebellious downhill runs, this rock-solid component features a Japanese SUS-410 stainless steel braking band construction. This makes it more than capable of handling all the rowdiness that comes with diving into corners and blasting across the woodland with power and poise.Heat Resistant MTB RotorEngineered for top-tier braking modulation and efficiency, this fantastic component manages heat build-up during extended periods of braking. This allows you to enjoy an improved stopping experience while maintaining your momentum on tricky trail sections. One final highlight is this sleek version can be paired with any of Prime's disc brake pads with race compound for maximum performance and a reduced brake squeal. Ideal for improving performance on any Center Lock wheelset.Please Note: Prime lock rings not included but are sold separately.Features: Braking Band Material: SUS-410 Stainless Steel Spider Material: 7075 Alloy Use: MTBThickness: 1.8-1.85mmEdge: ChamferedDesign: Unique braking band pattern designBuy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime TI Endurance Road Saddle - Black - White - 145mm Wide, Black - White
  • £24.99
  • RRP £29.99
  • Saving you £17

Prime TI Endurance Road SaddlePrime's TI Endurance Road Saddle offers enduring comfort when you're taking on epic distances. It features lightweight titanium rails and a wide and shallow convex shape. Plus, at the base, there's a cut-out section to relieve pressure on key areas.Endurance-specificDesigned for riding long distances over many hours on the bike. The TI Endurance's profile is optimised for use along with sportive, touring and gravel/adventure bikes. These types of bikes feature higher front ends to offer a more relaxed riding position, in which the lower back follows a less aggressive curve to the handlebars. Combining them with the TI Endurance saddle will help you to remain relaxed throughout your ride.Efficient and DurableFeaturing titanium alloy rails with a chromium nitride (CrN) coating, you've got excellent tensile strength, rigidity and corrosion resistance, plus a very low weight. These high-quality rails also increase the durability of the saddle, as they are far less able to flex and creak as you're riding. The rail's strength and lack of bulk help you to save energy when conquering a long climb or putting in a big effort when accelerating up to top speed.Features:Cover: Waterproof microfibre coverBase: Nylon fibre base with cut-out for pressure relief Rail Material: Titanium alloy with CrN (Chromium Nitride) coatingShallow convex profile Rail fore/aft measurement markers Dimensions: 277x145mm Weight: 226gBuy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Doyenne Alloy Road Stem - Black, Black
  • £24.99
  • RRP £29.99
  • Saving you £17

Prime Doyenne Alloy Road StemBringing a little bit of style and panache to the fore on your road bike, Prime's Doyenne Alloy Stem is designed with aerodynamics and functionality at its core. Keeping your handlebars steady for top-class steering, this attractive addition gives superb hold and adaptability. Attractive and Functional Handlebar Stem3D-forged and CNC-machined for ultimate sleekness and smooth lines, this stunning stem carries a low stack height and stylish integrated top cap to look it best while giving top handlebar holding performance. With a +/-5 degree rise capability, it can be positioned to your desired height and position, while its 138g weight keeps the front of your bike that little bit lighter and more streamlined. Emblazoned with inverted Prime logos, there's no denying they are proud of this superb stem. Material: 3D-forged and CNC-machined AL6061 Aluminium Top Cap: Integrated Rise Angle: +/- 5 degrees Weight: 138g Buy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Threaded Bottom Bracket (Shimano) - Black - 70mm - Italian Thread - 24mm Spindle}, Black
  • £24.99

Prime Threaded Bottom Bracket (Shimano)Designed for use with all Shimano and FSA cranksets with a 24mm axle diameter, Prime's Threaded BB is a high quality bottom bracket. Precision made for durability and smoothness; Prime Bottom Brackets keep your bike running smoother for longer.Low Friction Bottom BracketDesigned so that the bearings rest on the axle of the crank, these BBs provide a straight load to the bearings, which means your BB will last longer. This also allows us to make the Prime Threaded BB with tighter tolerances, so it runs smoother with less friction. This means you'll require less effort to make it up that hill or sprint for the line.To keep our Threaded BB running smoother for longer, we use special seals that keep water out of the bearings. We use multiple smaller seals, which reduces friction and provides a better barrier against moisture and dirt. Our bearings themselves are manufactured to precision and packed with slick, waterproof grease.All of the above combine to make the Prime Threaded Bottom Bracket the ideal choice for riders who want the best from their bike components.Please note: BSA & ITA options available, so please ensure you select the correct item from the drop down.Features: Bearing: Premium Stainless Steel Frame Type: BSA or Italian Threaded Crank Type: Shimano/FSA (24mm) Compatibility: Compatible with 68mm Road BB shells Installation: Shimano TL-FC24 bottom bracket tool adaptor required to install Weight: 69gBuy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Threaded Bottom Bracket (Shimano) - Black - 68mm English Thread - 24mm Spindle}, Black
  • £24.99

Prime Threaded Bottom Bracket (Shimano)Designed for use with all Shimano and FSA cranksets with a 24mm axle diameter, Prime's Threaded BB is a high quality bottom bracket. Precision made for durability and smoothness; Prime Bottom Brackets keep your bike running smoother for longer.Low Friction Bottom BracketDesigned so that the bearings rest on the axle of the crank, these BBs provide a straight load to the bearings, which means your BB will last longer. This also allows us to make the Prime Threaded BB with tighter tolerances, so it runs smoother with less friction. This means you'll require less effort to make it up that hill or sprint for the line.To keep our Threaded BB running smoother for longer, we use special seals that keep water out of the bearings. We use multiple smaller seals, which reduces friction and provides a better barrier against moisture and dirt. Our bearings themselves are manufactured to precision and packed with slick, waterproof grease.All of the above combine to make the Prime Threaded Bottom Bracket the ideal choice for riders who want the best from their bike components.Please note: BSA & ITA options available, so please ensure you select the correct item from the drop down.Features: Bearing: Premium Stainless Steel Frame Type: BSA or Italian Threaded Crank Type: Shimano/FSA (24mm) Compatibility: Compatible with 68mm Road BB shells Installation: Shimano TL-FC24 bottom bracket tool adaptor required to install Weight: 69gBuy Prime Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Prime Stagiaire Freehub Body - Black - Rim Brake}, Black
  • £24.99

Prime Stagiaire Freehub BodyPerfect for when it's time to service or replace the freehub body that came with your Prime Stagiaire rear wheel, this freehub body is designed for simple installation and provides excellent durability for tackling everything mile on your road bike. Featuring a hard-wearing construction, it provides an excellent strength-to-weight ratio for smooth and reliable performance wherever your next ride takes you.Features: Use: Road Type: Freehub Body Compatibility: Prime Stagiaire rear wheelBuy Prime Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

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