These big-bore kits have been race ported - intake, exhaust, and transfer ports have been enlarged/reshaped for more fuel/air flow and hence more power. Chung Yang 35mm big-bore kit - 26.9cc. It features an all-new casting with thicker heat fins and more.

Kit includes:

• cylinder, 35mm piston,
• piston ring,
• piston pin,
• pin washer set,
• pin bearing,
• NGK CMR7H spark plug.

Increases power and speed substantially! This high-performance product requires 91 octane (using the R+M/2 octane rating method) or higher fuel, and comes without warranty.

Fits Zenoah G23LH / G230RC / G260RC engines. Also fits Chung Yang CY23RC / CY26RC / CY27RC engines.

Fits All Hpi Baja and All 2 bolt Losi motors