Universal Parts QMB139 50mm Big Bore Cylinder Kit jazz Also available in Chrome

Also available in Chrome

Sport & Street: CBR250R (2011–2013)

Tread Pattern: K671F Street

This front pipe is a standard fit for 125cc-150cc GY6 "Sport Style" scooters

Universal Parts QMB139 50mm Big Bore Cylinder Kit jazz Also available in ChromeThis Universal Parts 50mm Big Bore Cylinder Kit fits 50cc 4 stroke 139QMB engines, upgrading bikes to 81. 3cc based on a stock stroke of 41. 4mm! Specifications: Includes cylinder, piston, pin, circlips, rings, head gasket and base gasket Bore: 50mm Overall Height: 70. 5mm Cylinder Sleeve Outer Diameter: 53mm 139QMB based 50cc 80cc engines with the following engine codes: 139QMA 139QMB 1P39QMB 1P39QMA 2 YN139QMB JJ1P39QMB 139FMA 2 BD1P39QMB BN139QMB