MTB disc brake calipers

MTB disc brake calipers

52 products

How to choose an MTB disc brake caliper

Replacing the caliper alone is sufficient after an impact or leak, provided it remains within the lever's hydraulic family. Shimano, SRAM, Magura and Hope are represented, from 2-piston cross-country to 4-piston enduro.

How many pistons?

  • 2 pistons : cross-country and light trail riding, progressive braking and low weight.
  • 4 pistons : enduro, downhill and e-MTBs, with more power and better heat resistance.
  • The number of pistons determines the pad shape: check pad availability before choosing.

Is my lever compatible?

  • The caliper must belong to the same hydraulic family same hydraulic family as the lever: piston ratios are not interchangeable between brands.
  • Observe the fluid in the system: mineral oil for Shimano and Magura, DOT fluid for SRAM.
  • Pairing a 4-piston caliper with a lever designed for 2 pistons changes lever travel and bite point, even within the same brand.

Which mount?

  • Post Mount on the vast majority of MTBs, with an adapter depending on rotor diameter.
  • IS on some older frames and forks, via a dedicated adapter.
  • Make sure you use bolts of the correct length: if they are too long, they will touch the rotor.

Replace or repair?

A leaking caliper or one whose pistons no longer retract can often be repaired with a seal kit and piston cleaning. Beyond a cracked body or stripped thread, complete replacement is safer — and both options require bleeding.

To find out more: How to choose mountain bike disc brakes

See also: Complete MTB brakes · MTB brake pads · Disc brake adapters