Complete 36mm GP290 big-bore kit from PMW.

Now featuring improved cylinder plating for increased durability.
This kit increases displacement to 28.5cc when used with a stock crankshaft with 28mm stroke.
Increases engine power SUBSTANTIALLY - estimated power output is 3.5 HP! This high-performance product requires 91 octane (using the R+M/2 octane rating method) or higher fuel, and comes without warranty. This kit has the 38mm cylinder skirt and is compatible with 38mm cases. Fits Zenoah G23LH / G230RC / G260RC engines. Also fits Chung Yang CY23RC / CY26RC / CY27RC engines. Also works as a complete replacement top-end for the "Version 1" GP290 engine with 38mm crankcase opening.

Includes:
1 x 36mm cylinder,
1 x piston,
1 x piston ring,
1 x piston pin
2 x two pin washers,
2 x circlips
1 x cylinder gasket
2 x cylinder bolts
1 x insulator gasket

When using this kit with a +2mm crank (dd312 - 2mm Stuffer Stroker Crank) you will need (ca318 - .040 Copper Cylinder Gasket for RC Engines) for proper clearence