Shimano XT BR-M8120 Disc Brake Caliper - 4-Piston Post-Mount Metal Pads Fins BLK MFPN=TB85955100 in that one side can

in that one side can be used with cups featuring non-removable bearings (pressure is applied precisely on the outer race preserving the integrity of the bearing itself) while the other is used for cups featuring removable bearings (pressure is applied to the cup race via a chamfered surface reducing the risk of slippage)

Included: Upper Bearing Cover

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Defined Color Black Rings 32 Spindle Interface Type SRAM DUB Chainring BCD Direct Mount SRAM Color Black Chainline/Hub Compatibility 135/142 MTB Hubs Designed for ebike Yes Drivetrain Speeds 10 Drivetrain Speeds 11 Drivetrain Speeds 12 Number of Chainrings Chain Retaining Single Crank Intended Use Mountain BB Included No Pedal Spindle 9/16" Crank Length (mm) 175

or cyclocross

Shimano XT BR-M8120 Disc Brake Caliper - 4-Piston Post-Mount Metal Pads Fins BLK MFPN=TB85955100 in that one side canShimano XT BR M8120 Disc Brake Caliper 4 Piston Post Mount Metal Pads with Fins Black. Deore XT BR M8100 series disc brake calipers offer consistent braking performance and reliable stopping power in all conditions. TECH SPECS Brake Lever Actuation Hydraulic Rotor Included No Brake Caliper Type Post Mount Hydraulic Fluid Type Mineral Oil Pad Compound Metallic Weight 410 Defined Color Black