STOCK SPECIFICATIONS:   

47mm BORE X 41.4mm STROKE 9:1 COMPRESSION

BORE KIT - 82CC

50mm piston, 11:1 compression

A great increase in torque and hp. We recommend our Camshaft with this kit for the best overall performance!

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

REQUIRES: Boring, rejetting.
 

00006R H BORE KIT 82CC -- $175.00

BORE KIT -

+ .010" OVERSIZE FOR 82CC

50.25mm piston , 11:1 compression

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

REQUIRES: Boring, rejetting.
 

00006RA H BORE KIT 82CC +010 -- $175.00

STROKER -

WITH TOUGH ROD ASSEMBLY

+9.5mm, 100cc’s with our 82cc Kit
● CT-SL 70
● TRX 70
● ATC 70 1981 & Later
● ATC 70 1970-1980

Incredible torque and awesome overall power increase. Gain another 40% more hp over the bore kit alone!

INCLUDES: Powroll Tough Rod Assembly: Rod, pin, needles. Work done on your crank.

REQUIRES: Send in your crank for modification. Download our Stroker Booklet for details. Include Make Model and Year information. 

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

16000RA H STROKE 9.5MM 70 W/ RA -- $375.00

CAMSHAFT - PERFORMANCE GRIND

Lift .238” IN/EX

HARDWELD CAM, NO CORE REQUIRED

This camshaft works as a top end grind in stock engines, and a midrange grind with our bore and/or stroke options.

12601N H CAM 50-70 - No Core Required -- $195.00

CAM CHAIN - POWROLL HEAVY DUTY

Stronger and less expensive than the OEM Honda chain.
 

18540 H HD CAM CHAIN MINI -- $30.00

VENTED VALVE CAP

This Billet cap produces more power by allowing the engine to vent excess crankcase pressure.

Reducing crankcase pressure will allow your engine to rev higher and pull harder! Installs in place of the stock intake valve cover.

Choose Gold, Blue, Red or Silver.

18530 VENTED VALVE CAP -- $45.00