Universal Parts QMB139 Non Emissions Head - 69mm Valves converter OEM replacement cylinder head for

OEM replacement cylinder head for 90 cc V9A and V9SS model Vespas

05 Quarts)

Includes Taiwanese NTN brand crankshaft bearings

We recommend this manifold for large carburetor applications

Optimized Power Band: Specifically tuned to improve mid-to-high RPM torque

Universal Parts QMB139 Non Emissions Head - 69mm Valves converter OEM replacement cylinder head forUniversal Parts Completely Assembled Non Emissions Style Cylinder Head with 69mm Valves for 50cc 4 stroke 139QMB engines. Specifications: Intake Port Diameter: 17mm Exhaust Port Diameter: 18mm Valve Length: 69mm Compatibility: 139QMB based 50cc 80cc engines with the following engine codes: 139QMA 139QMB 1P39QMB 1P39QMA 2 YN139QMB JJ1P39QMB 139FMA 2 BD1P39QMB BN139QMB 147QMD Other QMA models Other QMB models 157QMJ based 125cc 150cc 169cc engines with