Pay in 4 interest-free payments of $37.50 Learn more
Ships within 48 hours · Estimated delivery Sep 1 - Sep 6
Spline Count: Standard 19-Spline GY6 Crankshaft
00-4 300-4 3
TrailMaster (Mid XRS)
Drop-in fit — no modifications required
Naraku 139QMB 52.4mm Big Bore Cylinder & Head Kit | 89.3cc seats Spline Count: Standard 19-Spline GY6Unlock serious performance gains with the Naraku QMB139 52. 4mm Big Bore Cylinder & Head Kit. Engineered for QMB139 4 stroke 50cc engines, this complete kit bumps displacement to 89. 3cc with a stock 41. 4mm stroke or all the way to 94. 9cc when paired with a 44mm stroker crank. Everything you need for the swap is included. What's Included Cylinder (52. 4mm bore) Piston, rings, piston pin & circlips Cylinder head Head gasket & base gasket Key Features
US$ 24.00
US$ 28.00
US$ 120.00
US$ 22.00
US$ 30.00
US$ 42.00
US$ 37.00
US$ 30.00
US$ 35.00
