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Engine Builds For YFZ 450

Other combinations of piston type, bore size, crank stroke length, cams and more extensive port work available.  Please call 503.413.9971 for details.

 

523cc Big Bore Kit

 

Includes:

  • ICE CUBE Cylinder

  • 6mm Stroked and Balanced Crankshaft

  • 99mm 13:1 Compression Piston

  • All Necessary Gaskets

  • Installation Labor

  • Crank Counter Balancer Modification

  • Jetting & Jets

  • Timing Modification

        $3,200.00

 

Add (2) Stage 1 Hot Cams -  $375.00

Add Stage 1 Port Job - $200.00

 

 

 

 

500cc Billet Cylinder Kit

 

Includes:

  • 100mm 13:1 Compression Piston

  • NW Sleeve Billet Cylinder

  • Timing Modification

  • All Necessary Gaskets

  • Installation Labor

  • Jetting & Jets

        $1,500.00

 

Add (2) Stage 1 Hot Cams - $375.00

Add Stage 1 Port Job - $200.00

 

 

 

480cc Stock Cylinder Re-Sleeve Big Bore Kit

 

Includes:

  • 98mm 13:1 Compression Piston

  • Re-sleeve and Installation

  • Timing Modification

  • All Necessary Gaskets

  • Installation Labor

  • Jetting & Jets

        $765.00

 

Add (2) Stage 1 Hot Cams - $375.00

Add Stage 1 Port Job - $200.00

 

 

 

Stock Juice Up 449cc High Compression Kit

 

Includes:

  • Stock Size 13:1 Compression Piston

  • Stage 1 Port Job

  • Timing Modification

  • All Necessary Gaskets

  • Installation Labor

  • Jetting & Jets

         $555.00

 

 

Send mail to jeff@knuckleheadmotorsports.com with questions or comments about this web site or call 503-413-9971.
Copyright © 2007 Knuckle Head Motor Sports
Last modified: 10/23/07