Powroll Motor Performance - Since 1964  

 

 

For a limited time

 

 

Powroll

13840 Commercial Lp

Crooked River, OR

97760

 

Mail:

PO Box 920

Redmond OR  97756

 

Phone

541-923-1290

 

Fax

541-923-5637

 

Email

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Powroll - 4 Stroke Performance

 


STOCK SPECIFICATIONS:    39mm BORE X 41.4mm STROKE   10:1 COMPRESSION

FYI:  Although externally similar to the Z50, the Honda XR and CRF 50 internals are significantly different from the Z50.  No performance parts are readily interchangeable. 

Chinese and Taiwanese engines which are 'like Honda' design are not copies of the CRF or XR.  These engines share similarities to a variety of Honda engine designs, but aren't the same as any ONE Honda engine.


 

80cc BORE KIT  49.5mm Piston, 8:1 Compression.

This kit bores into a stock Honda 70 cylinder and give a great overall horsepower increase of at least 30%.

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

REQUIRES: Honda 70 Cylinder - NOT INCLUDED. Boring, rejetting.

00005N H BORE KIT 80CC -- $150.00

Quantity


PISTON KIT - OVERSIZE FOR 80CC KIT 

50mm Piston, 8:1 Compression .020” Oversize for our High Compression Kit shown above.

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

REQUIRES: Boring of 70 cylinder.

00005NB H BORE KIT 80CC +020 -- $150.00

Quantity

100cc BORE & STROKE COMBINATION

50mm Bore, 9.5mm Stroke 11:1 Compression

More than a 70% increase over stock hp. Excellent torque and midrange power.

INCLUDES:

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

●     Piston Kit: Piston, pin, rings, clips, headgasket, basegasket.

REQUIRES:

●     Honda 70 Cylinder & Head (not included with kit).

●     Boring.

●     Rejetting.

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

00006R-16001RA H BORE-STROKE COMBO 100cc -- $535.00


Quantity


PISTON KIT - OVERSIZE

50.25mm piston, 11:1 compression + .010” Oversize for 100cc Kit Shown Above

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

REQUIRES: Boring.  Only for use with Powroll Stroker (shown above).

00006RA H BORE KIT 82CC +010 -- $160.00

Quantity

CAMSHAFT  - HARDWELD CAM, NO CORE REQUIRED

Lift .238” IN/EX Lift.

An awesome increase in mid to top end power with our bore kit, and an overall increase in power with the 100cc bore and stroke combo.

12601N H CAM 50-70 -- $175.00

Quantity


CAMCHAIN - POWROLL HEAVY DUTY

Stronger and less expensive than the OEM Honda chain.

18540 H HD CAM CHAIN MINI -- $20.00

Quantity

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!    Choose Gold, Blue, Red or Silver.

18530 VENTED VALVE CAP -- $35.00


Quantity

 

Powroll Motor Performance

13840 Commercial Lp  Crooked River, OR  97760     Phone (541) 923-1290    Fax  (541) 923-5637

Copyright © 2007 Powroll Inc.  All rights reserved.  All photos and text are the intellectual property of Powroll and cannot be reproduced without permission.

Descriptions and pricing are subject to change without notice.