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Item #: 0936
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Aftermarket Big Bore Kit
with 20mm Carburetor Kit
and race head

88cc Big Bore Performance Kit (52mm)
Lightweight aluminum cylinder with steel sleeve
Cast in mounts on cylinder for aftermarket skid plates
Oversized cooling fins on cylinder for efficient heat dissipation
High compression 52mm piston with rings, pin, & clips
Head gasket kit and clutch cover gasket
High performance race camshaft (for race head only)
Race Head with larger valves (now 25/22mm)
and better flow for increased performance.
Also has bigger cooling fins.
Includes all nessessary parts and comes assembled!
The exhaust valve has been upgraded to stainless steel (21-4N).
20mm Performance carb assembly.
Includes: 20mm carb, intake, heatstop, gaskets, mounting
hardware/wrench, angled dual layer air filter and long adjustable throttle cable
 Main jet kit is now included too!
High volume oil pump now included!
Performance CDI box now included!
Easily double your power and fun with this quality,
yet economical bore, head and carb kit!!

Installation Note: It will save a lot of time and
effort if the oil pump is installed while installing the bore kit
Throttle housing not included in kit

Correct for the following models

Z50R 1988-99
XR50 All
CRF50 All



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