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Shimano 105 Cantilever Brake - Front or Rear BRCX50
  • £33.99
  • RRP £39.99
  • Saving you £15

Shimano CX50 Cantilever brake for road leversCable pull matches that of Super SLR drop bar levers, making them compatible with Road STI leversIdeally suited to cyclo-cross offering good mud clearance yet still maintaining low profileCan be used for cyclo-cross, touring, Audax and flat handlebar road bikes with wide tyresEasy set-up and adjustmentNot compatible with V-brake levers.

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Shimano 105 CN-5801 Bicycle Chain - Silver
  • £23.99
  • RRP £31.99
  • Saving you £25

Super narrow lightweight 11-speed HG-EV symmetrical design chain for smooth shifts and maximum durabilityOuter plate design has been developed to reduce the chance of chain suckSil-Tec surface treatment technology (PTFE plating) on inner links that is smooth running and increases durabilityThe inner plate has been developed for better contact with gears providing smoother shifting under high load, giving efficient pedalling, increased rigidity and near silent running5.62 mm chain width, optimised for 11-speed Super Narrow HG-EV drivetrainsAverage weight 257 gramsFor more information on how to keep your bike running smoothly, click here to see PBK's expert advice on taking care of your chains and cassettes.

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Shimano 105 Di2 ST-R7170 Hydraulic Disc Brake STI Lever - Left
  • £249.99

Shimano 105 Di2 ST-R7170 Hydraulic Disc Brake STI Lever The introduction of 105 Di2 shifters is perhaps the biggest shake up in gear changing since the invention of electronic shifting. With the 12-speed ST-R7170 shifters on your handlebars, smooth, quick electronic gear changes are now quite literally at your fingertips. The 105 series is easily Shimano’s most popular groupset; favoured by cyclists across the world, adding Di2 to the range puts electronic shifting in reach of many a cyclist to whom it was previously unobtainable. With 105 Di2 shifters, not only do you get fast and precise shifting every time you click the button, you’ll also get the braking performance to match. Perfect Shifting At The Touch Of A Button: Introducing Di2 to 105 naturally means one of the most evident changes can be seen in the shifters. Since gear changes are performed electronically, of course, there is no longer any need of a lever to pull cable through. Instead you change gear effortlessly at the touch of the button. Simply click the button, and listen out for the derailleur whirring into life. Via Shimano’s app it is even possible to customise your preferred shifting pattern, whether that’s faster or slower. Ergonomically Minded, Cleaner Look: In addition to introducing electronics to the shifters, the refinement of the shifters’ shape is further evidence of the thought that’s gone into this product. Without the need to accommodate the mechanical devices of the non-Di2 version and based on pro feedback, Shimano have slimmed down the design of the 105 Di2 lever and increased the height of the hood’s hook to improve the ergonomics of the shifter. The enhancements bring ST-R7170 closer in design to the more premium Dura-Ace and Ultegra lines. The combination of a slimmed down shape and absence of wires and ports means that the cockpit area is cleaner than before. So whether it’s the minimalist appearance you crave or it’s more space for accessories you’re looking for, everyone’s a winner. Braking Excellence: Braking control, while already stellar on the previous R7000 model, has also received a boost in performance. The 105 R7170 levers provide exceptional braking performance and control. The lever action is smoother and lighter than before, and the braking control area has been increased too. Battery For The Ages: Finally, if you’re concerned about forever being in a state of charging and replacing batteries, fear not. The two CR1632 batteries required are good for up to three years, which should provide enough power for even the most ardent users. Key Info: Speed: Front: 2-speed; Rear: 12-speed Pair of shifters Weight: 423g Hydraulic disc braking

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Shimano 105 Di2 ST-R7170 Hydraulic Disc Brake STI Lever - Right
  • £249.99

Shimano 105 Di2 ST-R7170 Hydraulic Disc Brake STI Lever The introduction of 105 Di2 shifters is perhaps the biggest shake up in gear changing since the invention of electronic shifting. With the 12-speed ST-R7170 shifters on your handlebars, smooth, quick electronic gear changes are now quite literally at your fingertips. The 105 series is easily Shimano’s most popular groupset; favoured by cyclists across the world, adding Di2 to the range puts electronic shifting in reach of many a cyclist to whom it was previously unobtainable. With 105 Di2 shifters, not only do you get fast and precise shifting every time you click the button, you’ll also get the braking performance to match. Perfect Shifting At The Touch Of A Button: Introducing Di2 to 105 naturally means one of the most evident changes can be seen in the shifters. Since gear changes are performed electronically, of course, there is no longer any need of a lever to pull cable through. Instead you change gear effortlessly at the touch of the button. Simply click the button, and listen out for the derailleur whirring into life. Via Shimano’s app it is even possible to customise your preferred shifting pattern, whether that’s faster or slower. Ergonomically Minded, Cleaner Look: In addition to introducing electronics to the shifters, the refinement of the shifters’ shape is further evidence of the thought that’s gone into this product. Without the need to accommodate the mechanical devices of the non-Di2 version and based on pro feedback, Shimano have slimmed down the design of the 105 Di2 lever and increased the height of the hood’s hook to improve the ergonomics of the shifter. The enhancements bring ST-R7170 closer in design to the more premium Dura-Ace and Ultegra lines. The combination of a slimmed down shape and absence of wires and ports means that the cockpit area is cleaner than before. So whether it’s the minimalist appearance you crave or it’s more space for accessories you’re looking for, everyone’s a winner. Braking Excellence: Braking control, while already stellar on the previous R7000 model, has also received a boost in performance. The 105 R7170 levers provide exceptional braking performance and control. The lever action is smoother and lighter than before, and the braking control area has been increased too. Battery For The Ages: Finally, if you’re concerned about forever being in a state of charging and replacing batteries, fear not. The two CR1632 batteries required are good for up to three years, which should provide enough power for even the most ardent users. Key Info: Speed: Front: 2-speed; Rear: 12-speed Pair of shifters Weight: 423g Hydraulic disc braking

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Shimano 105 FC5700 10 Speed Double Chainrings - Silver - 39t}, Silver
  • £20.99

Shimano 105 FC5700 10 Speed Double ChainringsSpecifically designed for use on Shimano 105 FC-5700 10-speed chainsets, these individual road bike chainrings deliver smooth power transfer and reliable, clean shifting. These chainrings are also suitable for use on Ultegra FC-6700 10-speed chainsets. They have the “B Type” match so either need to be bought as a pair of outer and inner rings, or matched up with another “B Type” chainring for efficient shifting.Features: Material: Aluminium BCD (Bolt Circle Diameter): 5x130mm Compatibility: Shimano 10-speed, SRAM 10-speed Speed: 10 Sold individually Manufacturer Reference Codes:Silver 130mm 53T: 1M3 9815; Black 130mm 53T: 1M3 9816; Black 130mm 52T: 1M3 9814; Silver 130mm 52T: 1M3 9813; Black 130mm 39T: 1M3 3901;Silver 130mm 39T: 1M3 3900A 2 year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano 105 FC5700 10 Speed Double Chainrings - Silver - 52t}, Silver
  • £44.99

Shimano 105 FC5700 10 Speed Double ChainringsSpecifically designed for use on Shimano 105 FC-5700 10-speed chainsets, these individual road bike chainrings deliver smooth power transfer and reliable, clean shifting. These chainrings are also suitable for use on Ultegra FC-6700 10-speed chainsets. They have the “B Type” match so either need to be bought as a pair of outer and inner rings, or matched up with another “B Type” chainring for efficient shifting.Features: Material: Aluminium BCD (Bolt Circle Diameter): 5x130mm Compatibility: Shimano 10-speed, SRAM 10-speed Speed: 10 Sold individually Manufacturer Reference Codes:Silver 130mm 53T: 1M3 9815; Black 130mm 53T: 1M3 9816; Black 130mm 52T: 1M3 9814; Silver 130mm 52T: 1M3 9813; Black 130mm 39T: 1M3 3901;Silver 130mm 39T: 1M3 3900A 2 year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano 105 FC5700 10 Speed Double Chainrings - Silver - 53t}, Silver
  • £38.99
  • RRP £44.99
  • Saving you £13

Shimano 105 FC5700 10 Speed Double ChainringsSpecifically designed for use on Shimano 105 FC-5700 10-speed chainsets, these individual road bike chainrings deliver smooth power transfer and reliable, clean shifting. These chainrings are also suitable for use on Ultegra FC-6700 10-speed chainsets. They have the “B Type” match so either need to be bought as a pair of outer and inner rings, or matched up with another “B Type” chainring for efficient shifting.Features: Material: Aluminium BCD (Bolt Circle Diameter): 5x130mm Compatibility: Shimano 10-speed, SRAM 10-speed Speed: 10 Sold individually Manufacturer Reference Codes:Silver 130mm 53T: 1M3 9815; Black 130mm 53T: 1M3 9816; Black 130mm 52T: 1M3 9814; Silver 130mm 52T: 1M3 9813; Black 130mm 39T: 1M3 3901;Silver 130mm 39T: 1M3 3900A 2 year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano 105 FC5750 10 Speed Compact Chainrings - Silver - 34t}, Silver
  • £18.99
  • RRP £20.99
  • Saving you £10

Shimano 105 FC5750 10 Speed Compact ChainringsThe new 5750 road chainring has a slim body line, super smooth rotation and superior shifting performance to power you effortlessly along. This Shimano10 speed road chainring is manufactured from aluminium and has an anodised coating to ensure lasting durability and cleaner gear shifts.Features:  Material: Aluminium  BCD: 5x110mm  Chainring design improves pick up and shifting performanceAnodised chainringCompatible with 7900 Dura Ace and 6700 Ultegra systemsA 2 year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano 105 FC5750 10 Speed Compact Chainrings - Silver - 50t}, Silver
  • £44.99

Shimano 105 FC5750 10 Speed Compact ChainringsThe new 5750 road chainring has a slim body line, super smooth rotation and superior shifting performance to power you effortlessly along. This Shimano10 speed road chainring is manufactured from aluminium and has an anodised coating to ensure lasting durability and cleaner gear shifts.Features:  Material: Aluminium  BCD: 5x110mm  Chainring design improves pick up and shifting performanceAnodised chainringCompatible with 7900 Dura Ace and 6700 Ultegra systemsA 2 year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

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Shimano 105 FC5800 11 Speed Chainrings - 34T-MA - Silver
  • £16.00
  • RRP £19.99
  • Saving you £20

The chainring teeth have been developed to work in conjunction with HG-X 11-speed chains for increased contact to provide greater efficiency and improved power transferMaterial: AluminiumBolt Pattern: 4 BoltChainring BCD: 110mm

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Shimano 105 FC5800 11 Speed Chainrings - 39T-MD - Silver
  • £16.99
  • RRP £22.00
  • Saving you £23

The chainring teeth have been developed to work in conjunction with HG-X 11-speed chains for increased contact to provide greater efficiency and improved power transferMaterial: AluminiumBolt Pattern: 4 BoltChainring BCD: 110mm

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Shimano 105 FC5800 11 Speed Chainrings - 50T-MA - Silver
  • £64.00
  • RRP £79.99
  • Saving you £20

The chainring teeth have been developed to work in conjunction with HG-X 11-speed chains for increased contact to provide greater efficiency and improved power transferMaterial: AluminiumBolt Pattern: 4 BoltChainring BCD: 110mm

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