178cc Big Bore Performance Kit (67mm):

• Ceramic coated all aluminum cylinder (no steel sleeve)
• Lightweight high compression domed 67mm 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 yourKLX110 or DRZ110  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:

This big bore kit is recommended for use only with our V2 Race Head.  For all other applications, please check clearances.

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.  The parts are installed in the same manner as the OEM parts. Also, while the engine is disassembled, you might consider the following options:

• 4th Gear Shift Drum if not a KLX110L model
• Output shaft – a must if you have a 2007 or older model
• 55mm Stroker Crank – this will increase the engine displacement to 194cc with
  this 178 kit