Upgrade your motorcycle's braking system with this high-quality stainless steel brake piston from SCI. Designed to fit Yamaha XS360, XS400, SR500, XJ650, SX650, SX850, XV920, and XS1100 models, this piston is better than OEM and comes with a 3-year manufacturer warranty. The polished finish and plain rotor style make it a sleek addition to your front suspension system. This brake caliper piston is a performance part that enhances your motorcycle's braking power without compromising on quality. The piston diameter is 38.10mm or 1.5" in height, and the maximum compatible disc size is 38.10mm or 1.625". It is made of durable stainless steel and is compatible with Yamaha motorcycles.