Cylinder Head & Valve Assembly; CSC go., 139QMB Scooters dia ISO 9001 certified manufacturing —

ISO 9001 certified manufacturing — consistent quality and durability

This OEM engine hanger complete bracket replaces stock round motor mount on CSC go scooters and bikes running 50cc 4-stroke 139QMB engines

partitioned plastic case to keep your weights sorted and prevent "gram-guessing" in the garage

open-air alternative to traditional locking topcases

Cylinder Head & Valve Assembly; CSC go., 139QMB Scooters dia ISO 9001 certified manufacturing —This assembled PAIR style cylinder head fits CSC go, go MAX and Pug scooters and bikes running 50cc 4 stroke 139QMB engines. Pulsed Secondary Air Injection System (PAIR) is an emissions control system used to lower hydrocarbon (HC) and carbon monoxide (CO) emissions by allowing air into the exhaust flow. Original Parts For Scooters SKU 151 240 Specifications: Intake Port Diameter: 17mm Exhaust Port Diameter: 17mm Valve Length: 69mm Emission Control