What Our Gearhead(R) Experts Are Saying: "This caliper is all business. I swapped it onto my enduro rig and immediately felt more control-especially on steep descents. The bite point stays super consistent in wet or dry, and the rattle-free pad design is a huge bonus when I'm riding rough, high-speed trails."When we're charging into technical terrain at full speed, we want total confidence in our brakes. The Shimano XTR BR-M9220 4-Piston Caliper delivers the power and modulation we need, with updated internals and refined damping that makes every squeeze feel sharp, responsive, and noise-free. Designed with enduro and DH riders in mind, this caliper takes what we loved about the M9200 family and dials it in for the roughest trails. A new low-viscosity hydraulic fluid and revised seals help maintain a consistent bite point no matter the temperature or conditions, while the reshaped pads eliminate vibration and noise on big descents. Riders can also fine-tune their feel with different pad and rotor combinations-resin or metal, finned or not. When we need power without compromise, this is the caliper we trust.