Blue Line Valve Rocker Arm Assembly: 64mm 139QMB Type 1 bella classic Replacement piston assy for the

Replacement piston assy for the PX-Stella Quattrini kit

Note: if your bike uses a 5-pin or round connector

Flywheel not included

High Performance variator from Dr

Includes Flywheel

Blue Line Valve Rocker Arm Assembly: 64mm 139QMB Type 1 bella classic Replacement piston assy for theKeep your 139QMB engine running smoothly with this OEM two valve rocker arm assembly from Blue Line Designed specifically for Type 1 engines with 64mm valve stems and a shorter cylinder head, this is a direct fit replacement that restores proper valve actuation and engine timing without modification. Not sure which type you have? Type 1 engines have 64mm valve stems and a shorter head. If your valve stems measure 69mm with a taller cylinder head, you