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Big Bore Kit for (gy6 or gy6 clone engines ) 4 Stroke 50cc Engines - Upgrade to 85cc


Installing a big bore is the best way to increase engine performance!
Upgrade from 50cc Engine to a 85cc Engine!

Change from 50cc (39mm*41.1mm) to 85CC (51mm*51.4mm) Cylinder Now!!

This kit includes the following
1pcs Cylinder, Piston + Piston Ring Kit, 2pcs Wist pins, Needle Bearing, Gasket set

Fits on Gy6 or Gy6 Clone (139QMB) 50cc Bike Engines!

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