TB parts 177-184cc bore kit w/VM26 carb kit for the YX160 and ZS155. Bolt on HUGE power with this performance top end kit. This kit will turn your ZS155 to 177cc or your YX160 to 184cc! These are high quality parts and require no machining to the cases or other modifications – bolt on and go!

Key Features:

TB parts 64mm Big Bore Kit:

There is no replacement for displacement. If you have the ZS155 this takes 64mm big bore kit increases your engine to 177cc. The YX160 goes to 184cc. The kit also includes an all aluminum ceramic coated cylinder.  This 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).  Unlike other kits, our head gasket kit also includes a head o-ring set and exhaust gasket. The piston high compression domed 64mm piston comes with rings, pin, & clips will safely run on pump gas, 90-93 octane at approximately 11.5:1.

Mikuni VM26 with TB parts manifold/carb kit:

Starting with the VM26 and larger intake manifold. You will experience some of the best throttle response and consistent reliable power! We also include a low profile air filter and a throttle cable that works with the basic 10mm pitbike throttles. TBW1487 may be necessary for certain pitbike frames. One of the biggest plus sides of this kit is that the out of the box stock VM26 jetting will work very well for this kit.

Notes – There are no installation instructions, but if you can replace your piston, you can install this kit. If you don’t have any experience working on your engine, we highly recommend having a professional technician install this kit or, at a minimum, purchasing the shop manual for your compatible bike.

Includes: TBW1250, TBW0503, TBW0590, TBW0301, TBW0556, TBW1354, TBW0399, TBW0477