Naraku QMB139 47mm 72cc Performance Cylinder Kit OEM NIU Parts M24810010002

M24810010002

ET4 125/150

Performance Handling: NCY Gold Series Front Forks

Direct bolt-on using existing frame holes — no drilling required

OEM Part Number: BF6253003100

Naraku QMB139 47mm 72cc Performance Cylinder Kit OEM NIU Parts M24810010002Naraku 50cc QMB139 4 stroke 47mm Big Bore Cylinder Kit. Kit includes cylinder, piston, rings, piston pin, cir clips, head gasket, base gasket, exhaust gasket and cam chain tensioner gasket. This is a drop in cylinder kit, no crank case modifications required! When used in conjunction with a stock stroke of 41. 4mm the total displacement comes out to 72cc. Upgrades to 72cc Cylinder Bore: 47mm Cylinder Sleeve Outer Diameter: 53. 1mm Wrist Pin Diameter: