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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16
4mm Width 40
OEM Part Number: BF6253003100
ET4 125/150
M24810010002
Performance Handling: NCY Gold Series Front Forks
Naraku QMB139 47mm 72cc Performance Cylinder Kit OEM NIU Parts 4mm Width 40Naraku 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:
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