165cc Big Bore Kit Z125

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165cc Big Bore Performance Kit (64mm):

– Ceramic coated all aluminum cylinder (no steel sleeve)
– Lightweight high compression domed 64mm piston with rings, pin, & clips
– Head gasket kit – Now includes the cylinder head o-ring set and an exhaust gasket.

The all aluminum ceramic coated cylinder is lighter than a steel sleeved aluminum cylinder, reduces friction (increasing power), improves sealing, and provides better heat transfer (runs and cools down quicker). This new cylinder along with a complete head gasket kit and domed piston will provide the extra power to make your new Z125  a lot more fun to ride! These are high quality parts and definitely will dramatically increase the power and fun factor on your bike!

Important Notes:

Installation requires engine disassembly and case boring. Therefore, we highly recommend a professional technician install this kit and the cases bored by a reputable machine shop. If you plan on installing the kit yourself, we highly recommend purchasing the shop manual for your bike available from your local Kawasaki. The parts are installed in the same manner as the OEM parts.  An aftermarket fuel controller is required and possibly an autotune will be needed to prevent a lean condition and damage to your engine.