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Powroll

13840 Commercial Lp

Crooked River, OR

97760

 

Mail:

PO Box 920

Redmond OR  97756

 

Phone

541-923-1290

 

Fax

541-923-5637

 

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Powroll - 4 Stroke Performance
 
 

Powroll products for the Yamaha YFZ450 2004-2005

STOCK SPECIFICATIONS:   

2004-2005    95mm BORE X 62mm STROKE  11.9:1 COMPRESSION

2006  95mm BORE X 63.4mm STROKE  11.4:1 COMPRESSION (no Powroll products for this engine)

STROKER 1.4mm

Get a true 450cc’s out of your YFZ!

Better torque and throttle response.

We stroke your stock crank assembly, and modify your new OEM piston.

INCLUDES: Work done on your crank and piston.

REQUIRES: Send your new OEM piston for modification. Send in your crank for modification.  Download our Stroker Booklet for details.

RECOMMENDATIONS: For engines with over 200 hours of use, we recommend replacing the rod assembly.

15901 Y STROKE YFZ450 -- $400.00


Quantity

 

Get more power from your stock 04-05 YFZ!  Powroll recommends the 4 R's:
  • Remove or modify the airbox lid
  • Run a freer flowing muffler
  • Rejet
  • Retard exhaust cam timing

These modifications can boost the YFZ power by 20-25%!

Free from Powroll - instructions for retarding your exhaust cam timing HERE

 

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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.