tbparts race head yx160

   27mm intake port, 23mm exhaust port (valves installed).

– Race Camshaft: tbw0577

-This kit is for stock YX/GPX 150/160 engines and

 only includes our new Race Head V2 and camshaft (see Important Note

 below). 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. These are high quality

 parts and require no machining to the cases or other modifications – bolt on

 and go!

-Important Note: This kit does not contain a piston.

 This head will not work with stock YX/GPX pistons.

 If you don’t use one of our newly modified pistons, check your your clearances very carefully and modify

 your piston’s reliefs to clear the bigger valves, if need be.

tbw9017a