Complete 36mm (28.5/30.5cc) Big-Bore kit from CY.
Now featuring improved cylinder plating for increased durability.
Includes :-
- 36mm cylinder and two cylinder bolts
- Piston
- Piston ring
- Piston pin and two pin washers, circlips
- Cylinder gasket and insulator gasket
- CMR7H spark plug
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.
- Increases displacement to 28.5cc when used with a stock crankshaft with 28mm stroke.
- Increases displacement to 30.5cc when used with a +2mm Stroker crank and 1mm Copper cylinder head gasket.
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.
