Bottom Brackets

Shimano BB-UN300 68mm Square Taper Bottom Bracket Shimano’s tried and trusted BB-UN300 68mm Bottom Bracket is perfect for traditional square taper chainsets, providing superb reliability and easy installation. The sealed bearings are smooth and durable whilst the narrow body leaves plenty of room within the frame for cable routing.

Shaft type: JIS (square) BBS15Weight: 338 grams.Thread type: BSA.Material: steel.Color: Black / gray.

Shaft type: JIS (square) BBS15Weight: 338 grams.Thread type: BSA.Material: steel.Color: Black / gray.

Shaft type: JIS (square) BBS15Weight: 338 grams.Thread type: BSA.Material: steel.Color: Black / gray.

The square taper bottom bracket Shimano BB-UN300-K is an essential component for all cycling enthusiasts. Designed by Shimano, a brand known for the quality and performance of its products, this bottom bracket offers strength and durability, a key feature for cycling adventures.Aimed at enhancing the riding experience, this bottom bracket is made to fit various frames and cranksets, ensuring a hassle-free installation. Its rigid construction allows for efficient power transfer, making the cyclist's efforts more effective.Notable features of the Shimano BB-UN300-K include:Mounting type: Square axle design for wide compatibility.Durability: Made with high-quality materials, ensuring a long lifespan …

himano BB-UN300 British Thread Square Taper Bottom Bracket ina variety of sizes for traditional chainsetsFeatures:A good quality bottom bracket for traditional chainsetsSuper-accurate bearings for smooth operation and improved durabilityDurable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fittingMaintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing lifeFast and easy installation without adjustmentNarrow body allows clearance for cable routing under the bottom bracket

Made using recycled plastic, lightweight and durable composite construction.Features:The side-loading design allows for easy bottle access on compact framesMount it on the down tube for right-side water bottle accessMount it on the seat tube for left-side water bottle accessSuitable for road and mountain useUse with the left-side load cage for seat tube and down tube access on the same side of frame

Square axle bottom bracket SHIMANO with quality cartridge bearings for performanceBetter chain stability with stabilizer3 types of mounting availableStandard, E-Type and chain case optionsAdapter material: aluminum

Thanks to improved sealing and better rotation, the SHIMANO DEORE bottom bracket delivers high pedaling efficiency.FEATURESImproved sealing performance

The Shimano BBRS500 Press Fit Bottom Bracket is designed for Shimano HollowTech II road cranks, offering a reliable and smooth performance. Made with fibre-reinforced polymer cups, this bottom bracket reduces the risk of frame noise and damage, ensuring a quiet and durable ride. The sealed cups keep out dirt and water, making it maintenance-free. This bottom bracket set includes both left and right-hand cups, an inner cover, and inner O-rings, making installation easy and hassle-free.Key Features:Fibre reinforced polymer material reduces frame noise and damageSealed cups keep dirt and water out for longevity and smooth operationMaintenance-free design for convenienceCompatible with 86.5mm shells41mm …

Shimano Deore MTB Bottom Bracket BB52 Silver EnglishThe Deore BB52 bottom bracket cups for Shimano cranksets with integrated axle offers better sealing performance than the precursor version SM-BB51. The seal design provides smooth rotation and longer durability.

Shimano BB-ES300 Octalink Bottom Bracket The Shimano BB-ES300 Bottom Bracket is for use with Octalink cranksets. The hollow, oversized 22mm spindle reduces weight whilst retaining all the stiffness necessary for pedalling efficiency and the splined interface improves rigidity. Sealed cartridge bearings and rubber seals keep the bottom bracket maintenance-free.

Genuine Shimano HollowTech II bottom bracket assemblySet includes left and right hand cups, spacers, inner cover, and inner O-ringsSealed cups keep out dirt and waterMaintenance freeCompatible with 68 mm and 73 mm shellDurable anodised finishEasy installationBottom Bracket TypeBSA ThreadedColourBlackDisciplineMTBProduct TypeBottom Brackets

Shimano BB-ES300 Octalink Bottom Bracket The Shimano BB-ES300 Bottom Bracket is for use with Octalink cranksets. The hollow, oversized 22mm spindle reduces weight whilst retaining all the stiffness necessary for pedalling efficiency and the splined interface improves rigidity. Sealed cartridge bearings and rubber seals keep the bottom bracket maintenance-free.

Shimano BB-UN300 British Thread Bottom Bracket Made with Shimano’s usual exacting standards, the BB-UN300 Bottom Bracket is an excellent option for bikes that have British threaded bottom bracket shells and chainsets with a traditional square tapered spindle fitting. Made into a one-piece unit, this bottom bracket keeps dirt, mud and water away from the sealed bearings to offer durability, corrosion resistance and low friction operation. The threaded construction installs easily without the need for any fiddly adjustments, and the narrow body of this unit means that it won't hinder gear and brake cables that are being routed internally through the frame's bottom bracket shell.

himano BB-UN300 British Thread Square Taper Bottom Bracket ina variety of sizes for traditional chainsetsFeatures:A good quality bottom bracket for traditional chainsetsSuper-accurate bearings for smooth operation and improved durabilityDurable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fittingMaintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing lifeFast and easy installation without adjustmentNarrow body allows clearance for cable routing under the bottom bracket

Shimano BB-UN300 68mm Square Taper Bottom Bracket Shimano’s tried and trusted BB-UN300 68mm Bottom Bracket is perfect for traditional square taper chainsets, providing superb reliability and easy installation. The sealed bearings are smooth and durable whilst the narrow body leaves plenty of room within the frame for cable routing.

Square axle bottom bracket SHIMANO with quality cartridge bearings for performanceBetter chain stability with stabilizer3 types of mounting availableStandard, E-Type and chain case optionsAdapter material: aluminum

himano BB-UN300 British Thread Square Taper Bottom Bracket ina variety of sizes for traditional chainsetsFeatures:A good quality bottom bracket for traditional chainsetsSuper-accurate bearings for smooth operation and improved durabilityDurable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fittingMaintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing lifeFast and easy installation without adjustmentNarrow body allows clearance for cable routing under the bottom bracket

himano BB-UN300 British Thread Square Taper Bottom Bracket ina variety of sizes for traditional chainsetsFeatures:A good quality bottom bracket for traditional chainsetsSuper-accurate bearings for smooth operation and improved durabilityDurable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fittingMaintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing lifeFast and easy installation without adjustmentNarrow body allows clearance for cable routing under the bottom bracket

Shimano BB-UN300 British Thread Bottom Bracket Made with Shimano’s usual exacting standards, the BB-UN300 Bottom Bracket is an excellent option for bikes that have British threaded bottom bracket shells and chainsets with a traditional square tapered spindle fitting. Made into a one-piece unit, this bottom bracket keeps dirt, mud and water away from the sealed bearings to offer durability, corrosion resistance and low friction operation. The threaded construction installs easily without the need for any fiddly adjustments, and the narrow body of this unit means that it won't hinder gear and brake cables that are being routed internally through the frame's bottom bracket shell.

himano BB-UN300 British Thread Square Taper Bottom Bracket ina variety of sizes for traditional chainsetsFeatures:A good quality bottom bracket for traditional chainsetsSuper-accurate bearings for smooth operation and improved durabilityDurable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fittingMaintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing lifeFast and easy installation without adjustmentNarrow body allows clearance for cable routing under the bottom bracket

himano BB-UN300 British Thread Square Taper Bottom Bracket ina variety of sizes for traditional chainsetsFeatures:A good quality bottom bracket for traditional chainsetsSuper-accurate bearings for smooth operation and improved durabilityDurable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fittingMaintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing lifeFast and easy installation without adjustmentNarrow body allows clearance for cable routing under the bottom bracket

Square axle bottom bracket SHIMANO with quality cartridge bearings for performanceBetter chain stability with stabilizer3 types of mounting availableStandard, E-Type and chain case optionsAdapter material: aluminum