TB - TBW9034B - 170cc/184cc Race Head V2 Upgrade Kit – GPX/YX150-160

170/184cc Race Head V2
Upgrade Kit:

– Race Head V2 – Roller rockers, 30mm intake valve, 24.5mm exhaust valve,
27mm intake port, 23mm exhaust port (valves installed).
– Race Camshaft V2-2 for Race Head V2
– Head gasket kit – includes the cylinder head o-ring set and an exhaust gasket.

This kit is for YX/GPX150/160 engines with our 170cc or 184cc bore kit already installed. While
the bore kit provides a nice power gain over stock, wait until you try this
head!!  This kit includes our new Race Head V2 and while the new head may
appear to be the same on the outside as our other KLX110 type race head,
internally it has gone through numerous changes.  The addition of roller
rocker arms and a new camshaft are the biggest changes followed by bigger valves
and ports. The exhaust valve is now stainless as well (21-4N material). 
This all adds up to a cylinder head that puts out a professional level of
performance yet is still affordable for the privateer rider. Additionally, our head gasket kit includes a head o-ring set and exhaust gasket so you don’t
have to re-use your old ones or make a trip to your local dealer to get new ones
and spend more money.  These are high quality
parts and require no machining to the cases or other modifications – bolt on
and go!

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.

The parts are installed in the same manner as OEM parts.