CP Pistons Harley Twin Cam 107 3.937 Bore 10.75:1 - BHM107-3

Build your Harley-Davidson Twin Cam with CP Pistons BHM107-3 forged pistons designed for 107 cubic inch applications. Featuring a 3.937-inch bore, 4.375-inch stroke compatibility, 7.667-inch connecting rod length, and a 10.75:1 compression ratio when used with 85cc cylinder heads, these pistons are engineered for strong torque, throttle response, and reliable performance.

Manufactured from premium forged aluminum, CP Pistons deliver exceptional strength, thermal stability, and precise machining for high-load V-twin applications. Ideal for performance street and aggressive riding builds, the BHM107-3 piston set provides consistent compression, improved durability, and the proven reliability CP Pistons is known for in Harley performance engines.