STOCK SPECIFICATIONS:    47.5mm BORE X 45mm STROKE    9.7:1 COMPRESSION

BORE KIT 95cc

51.25mm piston, 10.5:1 Compression

INCLUDES: Piston, pin, rings, circlips, headgasket, basegasket.  REQUIRES: Boring, rejetting.

RECOMMENDATIONS: We recommend our Camshaft and one of our exhaust options with this kit for the best overall performance!

00315N H BORE KIT -- $150.00

BORE & STROKE COMBO 121cc

53mm Bore, +9mm Stroke, 12:1 Compression

This 121cc bore/stroke combo and heavy-duty rod with larger piston pin makes great power without sacrificing reliability.

INCLUDES:

BORE: Piston, rings, pin, circlips, headgasket, basegasket, sleeve

STROKE: Rod, crank pin, needle assembly.  Work done on your crank.

REQUIRES: Cylinder re-sleeving and case machining, Boring, rejetting.  Send in your crank for modification.  Download our Stroker Booklet for details.

Note - this piston kit and stroker MUST be used together, as the larger piston pin will not work with the standard rod.

00260S-16037-14RA H BORE-STROKE 121CC 92> -- $645.00
 

CAMSHAFT  -  RACE GRIND

HARDWELD CAM, NO CORE REQUIRED

Lift .280” IN/ .275” EX.

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

12680N H CAM 75-80-100 -- $195.00

VALVE SPRINGS

2 Inner and 2 outer springs.  These utilize your stock retainers and work well with most aftermarket cams.

24001 H VALVE SPRINGS 75-80-100 -- $50.00
 

CLUTCH SPRINGS

Recommended for larger engines and larger riders!

16751 H CLUTCH SPGS 80-100 -- $25.00

EXHAUST -

THRUST CHAMBER - Spark Arrested

This CNC machined billet aluminum piece installs in your stock muffler and works in tandem with your excellent stock exhaust system for better power without increased sound levels.

Performance similar to many complete aftermarket exhaust systems! Better throttle response and increased top end. Works with stock spark arrestor.   Choose Gold, Red, or Silver.

No need for the spark arrestor?

The Thrust Nozzle will give you better power than running without the stock end cap. Power gains as good as or better than some complete aftermarket systems! Louder and throatier sounding than the Thrust Chamber, but still more stealthy than aftermarket mufflers. Replaces the stock spark Arrestor unit.  Brushed Stainless Steel

Install with our Thrust Chamber for a more sano look.

17102NS H STAINLESS THRUST NOZZLE 50-70-80-100 -- $45.00