Axle: 20mm floating thru-axle

spring material300 series stainless steel

Switching to Shimano from SRAM

5 inch - 40 psi

You will give up the super-easy climbing gear but gain more even spacing between the gears and the ability to run a shorter cage derailleur

Shimano SLX BR-M7120 Disc Brake Caliper Only - Black - Caliper Only Exclusive Axle: 20mm floating thru-axleThe Shimano SLX BR M7120 is a four piston disc brake caliper that has benefited from the trickle down of technology from the XT and XTR models. Four pistons provide you with huge stopping power but also have more modulation than the two piston models. The calipers ship with both finned NO3A (resin) pads but they are also compatible with N0C4 (metallic) as well as the non finned D03S (resin) or D02S (metallic) pads. Who is this item for: Riders who