All set for hitting your local mountain bike (MTB) trails, this hydraulic disc brake caliper is equipped with four pistons in a structurally rigid design for maximum durability. Featuring a cold-forged aluminium construction and a KingPin structural pad retention bolt, it delivers increased stiffness and dependability as you carve your way around the mountain. Another highlight is it's compatible with the A2 brake lever, which means you can upgrade your existing A2 piston to this one and still use the same brake lever. This makes it a great choice of upgrade for riders who want more power as they thrash their way from trail to trail. Manufacturer's Part Number: 98-36139-K001 Bronze One Size Caliper Only