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.

*Free Shipping applies to orders shipped within the US, and using our economy service. Faster shipping, or orders shipped outside the US will incur regular shipping fees.

BORE KIT 95cc

$150.00

1992 > Current #00315N

1979-1991 #00342

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!

BORE & STROKE COMBO

121cc

$645.00

1992 > Current #00260S-16037-14RA

1979-1991 #00259S-16037-14RA

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.

CAMSHAFT  - 

RACE GRIND

#12680N

$195.00

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.

VALVE SPRINGS

#24001

$50.00

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

CLUTCH SPRINGS

#16751 1987-Current Models $25.00

#16785 1979-1986 Models $21.00

Recommended for larger engines and larger riders!

2001 & LATER MODEL EXHAUST -

THRUST NOZZLE -

Not Spark Arrested

#17102N

$45.00

No need for the spark arrestor? The Thrust Nozzle will give you better power than running without the stock end cap. With about a 15% increase in overall power, it's as good or better than most 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.

1985 through 2000 Models -

POWROLL

PERFORMANCE

EXHAUST

#18294

$250.00

Our oversize header and 3” Supertrapp are designed specifically to bring out the best in this small engine without making it impossible for kids to ride.  Spark Arrested & Forestry Approved. 

No Powroll exhaust options for 1979-1984 models