TBparts CRF70 Race Head, 88cc Bore & 20mm Carb Kit – All Models
Race Head, 88cc Big
Bore kit, and 20mm Carburetor Performance Kit:
UPDATE – Until
further notice, this kit will also include the following items at no
– 6 Piece main jet kit for the 20mm carb ($10 savings)
– High Volume oil pump ($25 savings)
– Clutch cover gasket ($3 savings)
– Performance CDI ($25 savings)
$63 total savings
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
See the Tech Info section for additional
information on our performance parts.