tbparts classic race head 52mm kit for crf50/70
€ 434,40
TBparts classic race head kit with alu 52mm cilinder, high volume oil pump, 20mm carb kit, red box cdi, gaskets,...
This kit is for all nt50/70 engines
the red box cdi is only compatible with crf50/70 ignition systems
please contact us for other configurations at info@mikesbikeshop.be,
we made some fun adjusted setups with this kit on long stroke cilinders, high compression setups and 54mm bore setup
with different type's of carb kits and ignition systems.
6/26/06 Our Race Head has been updated for even more performance! It now
has 25/22mm valves with better porting/flow. We also kept the combustion
chamber the same size and changed the angle of the valves slightly. This will really wake up your stock
engine and is comparable in power to the much
larger Chinese 124cc engines!!! Includes the following:
– Lightweight aluminum cylinder with steel sleeve
– Cast in mounts on cylinder for aftermarket skid plates
– Oversized cooling fins on cylinder for efficient heat dissipation
– 52mm high compression piston with rings, pin, & clips
– Head gasket kit and clutch cover gasket.
– High performance race camshaft (for the Race Head only)
– Race Head Larger valves (now
25/22mm) and better flow for increased
performance. Also has bigger cooling fins. Includes all necessary parts and
comes assembled! NEW! 06/08 – The
exhaust valve has been upgraded to stainless steel (21-4N material) .
– 20mm Performance carb assembly. Includes: 20mm carb, intake, heatstop, gaskets, mounting hardware/wrench, long adjustable throttle cable,
and a angled dual layer foam air filter.
Installation Note: It will save a lot of time and
effort if the oil pump is installed while installing the bore kit (requires
cylinder removal). Also, note on the 91-94 CT70s, the CDI included does not work on those models (Just the XR/CRF50s and 70s)
tbw0936a