34mm Big-Bore kit from Zenoah for the RC engines. Increases displacement to 25.4 cc.
Includes 4 transfer port cylinder, piston w/ring, Champion RZ7C spark plug, piston pin, cylinder gasket, and clips.
Increases engine power SUBSTANTIALLY! This high-performance product requires 91 octane (R+M/2 octane rating) or higher fuel, and comes without warranty.
Note: if installing this product onto a Chung Yang engine (CY23RC, CY26RC, etc), you will need to use a Zenoah Needle Bearing for Piston Pin and Zenoah pin washers.
