Naraku 139QMB 52.4mm Big Bore Cylinder & Head Kit | 89.3cc seats Oil seal replacement for VSB-C

Oil seal replacement for VSB-C

Drop-in fit — no modifications required

NCY braided stainless steel brake line for all scooters

as these vintage-style keys are often difficult to cut at local hardware stores

Mechanic's Note: This kit is a "must-have" for the 2022+ Zuma

Naraku 139QMB 52.4mm Big Bore Cylinder & Head Kit | 89.3cc seats Oil seal replacement for VSB-CUnlock serious performance gains with the Naraku QMB139 52. 4mm Big Bore Cylinder & Head Kit. Engineered for QMB139 4 stroke 50cc engines, this complete kit bumps displacement to 89. 3cc with a stock 41. 4mm stroke or all the way to 94. 9cc when paired with a 44mm stroker crank. Everything you need for the swap is included. What's Included Cylinder (52. 4mm bore) Piston, rings, piston pin & circlips Cylinder head Head gasket & base gasket Key Features