Splined bottom bracket for use with Shimano Octalink chainsetsOversize BB spindle - large 22 mm diameter hollow pipe billet spindle reduces weight, increases strength and rigidityOctalink splined axle/crankarm interface -results in more rigid crank assembly compared to square tapered spindleES51 has anti-corrosion treatment inside hollow spindleSealed cartridge assembly - maintenance-free sealed cartridge keeps out dirt, mud and waterCartridge design allows easy installation without adjustmentAluminium adapterAverage weight 262 grams

Splined bottom bracket for use with Shimano Octalink chainsetsOversize BB spindle - large 22 mm diameter hollow pipe billet spindle reduces weight, increases strength and rigidityOctalink splined axle/crankarm interface -results in more rigid crank assembly compared to square tapered spindleES51 has anti-corrosion treatment inside hollow spindleSealed cartridge assembly - maintenance-free sealed cartridge keeps out dirt, mud and waterCartridge design allows easy installation without adjustmentAluminium adapterAverage weight 262 grams

Splined bottom bracket for use with Shimano Octalink chainsetsOversize BB spindle - large 22 mm diameter hollow pipe billet spindle reduces weight, increases strength and rigidityOctalink splined axle/crankarm interface -results in more rigid crank assembly compared to square tapered spindleES51 has anti-corrosion treatment inside hollow spindleSealed cartridge assembly - maintenance-free sealed cartridge keeps out dirt, mud and waterCartridge design allows easy installation without adjustmentAluminium adapterAverage weight 262 grams

Splined bottom bracket for use with Shimano Octalink chainsetsOversize BB spindle - large 22 mm diameter hollow pipe billet spindle reduces weight, increases strength and rigidityOctalink splined axle/crankarm interface -results in more rigid crank assembly compared to square tapered spindleES51 has anti-corrosion treatment inside hollow spindleSealed cartridge assembly - maintenance-free sealed cartridge keeps out dirt, mud and waterCartridge design allows easy installation without adjustmentAluminium adapterAverage weight 262 grams

Splined bottom bracket for use with Shimano Octalink chainsetsOversize BB spindle - large 22 mm diameter hollow pipe billet spindle reduces weight, increases strength and rigidityOctalink splined axle/crankarm interface -results in more rigid crank assembly compared to square tapered spindleES51 has anti-corrosion treatment inside hollow spindleSealed cartridge assembly - maintenance-free sealed cartridge keeps out dirt, mud and waterCartridge design allows easy installation without adjustmentAluminium adapterAverage weight 262 grams

Splined bottom bracket for use with Shimano Octalink chainsetsOversize BB spindle - large 22 mm diameter hollow pipe billet spindle reduces weight, increases strength and rigidityOctalink splined axle/crankarm interface -results in more rigid crank assembly compared to square tapered spindleES51 has anti-corrosion treatment inside hollow spindleSealed cartridge assembly - maintenance-free sealed cartridge keeps out dirt, mud and waterCartridge design allows easy installation without adjustmentAluminium adapterAverage weight 262 grams

Splined bottom bracket for use with Shimano Octalink chainsetsOversize BB spindle - large 22 mm diameter hollow pipe billet spindle reduces weight, increases strength and rigidityOctalink splined axle/crankarm interface -results in more rigid crank assembly compared to square tapered spindleES51 has anti-corrosion treatment inside hollow spindleSealed cartridge assembly - maintenance-free sealed cartridge keeps out dirt, mud and waterCartridge design allows easy installation without adjustmentAluminium adapterAverage weight 262 grams

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.

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.

A variant of the external bottom bracket, PressFit cut weight by up to 40 grams and provide easier installation by allowing you to press the bearing cups into the frame instead of threading them. There's no change to the crank — spindle length and diameter remain the same.

A variant of the external bottom bracket, PressFit cut weight by up to 40 grams and provide easier installation by allowing you to press the bearing cups into the frame instead of threading them. There's no change to the crank — spindle length and diameter remain the same.

A variant of the external bottom bracket, PressFit cuts weight by up to 40 grams and provides easier installation by allowing you to press the bearing cups into the frame instead of threading them. There's no change to the crank - spindle length and diameter remain the same.TechnologyGXPGXP’s Gutter Seal design cuts friction and weight—improving both feel and performance.Specifications for PressFit GXP Bottom Bracket• WEIGHT: 83g• Easy installation• PressFit cups for lighter weight• Bearings: Ceramic as standard

Bombproof for Freeride and DH extremes. Features oversized cartridge bearings to produce a super durable external BB system. Purpose-built with CNC machined AL-6061 cups, chromoly spindle, and extreme strength by design.Bearings2 x sealed oversized cartridge bearingsWeight365 GramsChainline51 MTBMaterial AxleCrMo H/TAxle Bore ThreadM12Material L&R CupsCNC-Machined Steel, CNC-Machined AlloyBB Shell Wide68mmUpcharge Alloy Cups28 NT

Looking for a robust bottom bracket that's not going to give up on you? The Truvativ Power Spline has a heat treated Cromoly 12 spline spindle to make sure it can go the distance with even the most demanding riders.

Looking for a robust bottom bracket that's not going to give up on you? The Truvativ Power Spline has a heat treated Cromoly 12 spline spindle to make sure it can go the distance with even the most demanding riders.

Looking for a robust bottom bracket that's not going to give up on you? The Truvativ Power Spline has a heat treated Cromoly 12 spline spindle to make sure it can go the distance with even the most demanding riders.

Looking for a robust bottom bracket that's not going to give up on you? The Truvativ Power Spline has a heat treated Cromoly 12 spline spindle to make sure it can go the distance with even the most demanding riders.

Looking for a robust bottom bracket that's not going to give up on you? The Truvativ Power Spline has a heat treated Cromoly 12 spline spindle to make sure it can go the distance with even the most demanding riders.

A good quality bottom bracket for traditional chainsets. Super-accurate bearings for smooth operation and improved durability. Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting. Lightweight hollow spindle. Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life. Fast and easy installation without adjustment. Narrow body allows clearance for cable routing under the bottom bracket.

A good quality bottom bracket for traditional chainsets. Super-accurate bearings for smooth operation and improved durability. Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting. Lightweight hollow spindle. Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life. Fast and easy installation without adjustment. Narrow body allows clearance for cable routing under the bottom bracket.