The SRAM Maven Disc Brake Caliper Piston Kit is designed to keep your bike's braking system in top condition. This kit includes essential components to ensure smooth and reliable braking performance. What's Included: 2 x 19.5mm caliper pistons 2 x 18mm caliper pistons Seals O-rings The SRAM Maven Disc Brake Caliper Piston Kit is compatible with the following models: DB-MVN-BRZ-A1 DB-MVN-SLV-A1 DB-MVN-ULT-A1 This kit is perfect for maintaining the performance of your Maven ULT, SLV, and BRZ disc brakes. Keep your bike's braking system efficient and responsive with this reliable piston kit from SRAM.