DECOMP roller rocker RACE head Zongshen 155

DECOMP roller rocker RACE head Zongshen 155

This kit is to upgrade the cylinder head on stock YX/GPX 150 or 160 engines to our new Race Head V2. The addition of this new head will dramatically increase the performance of your stock engine!!

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.



Includes roller rockers and racecamshaft, valve size 30/24.5mm

The best aftermarket cylinder head available.

Ports, intake: 26,5 mm, exhaust: 22,5 mm

Choose camshaft:
- S25 = Middle RPM range power.
- S35 = High RPM range power.


Now with a decompression release that will save your gearbox and engine cases!
Please check CLEARANCE between piston and valves.

Zongshen 177cc cylinderkit

A high quality big bore kit from American Honda trial bikes.
177cc Bore Kit – Only for Zongshen 155cc engines. Our 64mm KLX cylinder and pistons have been machined so no case boring or other modifications necessary – bolt on and go!
A complete kit with:
- Lightweight 64mm piston
- Best quality 64mm piston rings
- 13mm pin bolt and clips
- Lightweight 64mm alloy cylinder NOW with skirt!