Blue & Silver Sold Out.

Spark Arrested. Works with stock spark arrestor.   

This CNC machined billet piece 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.

BORE KIT 143cc

HIGH COMPRESSION

#00331F

$275.00

61mm Forged Piston.  12.5:1 Compression

If you're only doing one modification to your 125, this is it!!  Best bang-for-the-buck mod you can do -  at least a 20% increase over stock horsepower (more with cam & pipe mods).  High compression is the key to great increases in torque and hp seen with this kit.

Our new piston design is made in America from premium forgings.  CNC lightened for the same weight as the low compression piston.

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

REQUIRES: Boring. Rejetting. 108+ octane.

CHECK OUT THE DOME ON THAT BABY! Comparison of our 00331F (on the left) high compression with the 00331S lo-comp.

BORE KIT 143cc

LOW COMPRESSION

#00331S

$160.00

61mm Forged Piston.  11:1 Compression

This lower compression piston is the one we use with our stroker crank for the 170cc kit.  Used alone, it will give the engine a small (10%) boost in torque and midrange power. 

For real performance gains, we strongly recommend the high compression kit shown above, or the 170cc bore/stroke combination below. 

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

REQUIRES: Boring. Rejetting.

170cc

BORE & STROKE COMBO

#00331S-16086

$420.00

61mm Piston. 9mm Stroke. 13:1 Compression

This kit gives the KLX-DRZ awesome torque and midrange power. Pair it with our cam and ignition system for power from the basement to the moon!

INCLUDES: Bore kit: Piston, pin, rings, circlips, headgasket, basegasket. Stroke work done on your good stock crank assembly.

REQUIRES: Boring. Send in your crank for modification.  Download our Stroker Booklet for details. Rejetting (Carb kit #20536 highly recommended). Race gas 108+ octane.

CAMSHAFT -

RACE GRIND

#12616B

$165.00

BILLET CAM, NO CORE REQUIRED

This new grind is specifically designed to give you the BEST power possible for your Powrolled 125! An awesome increase in mid to top end power when used with our ignition system.

Because the power curve of this cam pulls best after the stock rev limiter kicks in, it is not recommended for use with stock ignition.

Uses stock valve springs.

CAMSHAFT -

MIDRANGE GRIND

#12615B

$150.00

BILLET CAM, NO CORE REQUIRED

This grind was designed by the Powroll R&D guys to work perfectly with our 143cc bore kit and the stock ignition system. More midrange and top end power without losing the excellent torque characteristics of the bigger bore.

Uses stock valve springs.

CARBURETOR -

MIKUNI 26MM

ROUND SLIDE

#20536

$220.00

Powroll Tested, Powroll Jetted

Perfect bolt-on power for your Powrolled 125. Superior throttle response, better midrange and awesome top end power. Best of all, it comes with detailed installation instructions -- in English! Installs in minutes using your stock throttle and airbox. Recommended for engines 143cc’s or larger.

KIT INCLUDES: 26mm Round Slide Mikuni, pre-jetted for our 143cc kit. Extra main jets for larger and smaller engine configurations. Detailed installation instructions and jetting specifications.

IGNITION SYSTEM -

POWROLL PVL

#18537

$599.00

Special Order Item - Allow 3 weeks for delivery.

Best bolt-on power you can buy for your KLX.

The stock rev limiter on the KLX-DRZ 125 doesn’t allow this great engine to reach its full potential. Powroll created this kit to solve the problem!

Works with stock or modified 125’s for more power throughout the RPM range. Less Rotating Mass than the stock system = quicker revving engine.

INCLUDES: ALL new ignition parts: Low-resistance spark plug cap, coil, ignition unit, stator, rotor and rotor puller. Step-by-step installation instructions are included - in English!

RECOMMENDED:  Because of the aggressive low-rpm advance curve, kickstarting is not recommended on cold engines running this ignition.

CLUTCH SPRINGS

#16784

$29.00

Stainless steel for better strength and heat resistance.