Parts also fit 1977-79 XL 75

STOCK SPECIFICATIONS:   

48mm BORE X 41.4mm STROKE

BORE KIT 80CC

49.5mm piston, 9.5:1 compression

INCLUDES: Piston, pin, rings, circlips, headgasket.

REQUIRES: Boring, rejetting

RECOMMENDATIONS: We recommend our Camshaft and Exhaust system with this kit for the best overall performance!

#00147N

$160.00

BORE KIT - OVERSIZE FOR 80cc
50mm piston, 9.5:1 compression. +.020” Oversize for #00147N

INCLUDES: Piston, pin, rings, circlips, headgasket.

REQUIRES: Boring, rejetting.

#00147NB

$160.00

STROKER +9.5mm

98cc's when Paired with our 49.5mm Bore Kit

INCLUDES: Work done on your crank. No parts included. Your crank may require additional parts.

REQUIRES: Send in your crank for modification.  Download our Stroker Booklet for details.

RECOMMENDATIONS: Works best with Powroll pistons. Modifications may be required if using other piston or cam brands.

#16029

$275.00 + parts, if needed

RACE GRIND CAMSHAFT -

HARDWELD CAM, NO CORE REQUIRED

Lift .280” IN/ .275” EX.

This camshaft is a great addition to any modified engine. We recommend our High Performance Valve Springs for more aggressive riders and larger displacement engines.

#12680N

$195.00

VALVE SPRINGS

These utilize your stock retainers and work well with most aftermarket cams.

#24001

$50.00

CLUTCH SPRINGS

FITS XR ONLY - NOT XL

Recommended for bigger engines and larger riders!

#16785

$21.00