478cc Big Bore Engine Kit

   
$ 560.00  
Click here
for porting
info
YZ 478F Specifications:
Fits 2003-2007 Yamaha YZ450F
Bore = 98mm Stroke = Stock Displacement =478cc

Engine Modifications Included:
Cylinder: Bore and Replate with Apticote 2000 ceramic bore coating.
Head: No head mods required.
Crankshaft: No crank mods required.
Crankcase: No crankcase mods required.
 
 
All of our engine kits are
built using Wiseco Pistons
  weisco
     
 
    
Benefits:
  • 8-10 horsepower gain
  • More torque

Kit includes:

  • Piston kit with piston, rings, wrist pin, circlips.
  • Head gasket
  • Base Gasket

This kit requires you to send us:

  • Your cylinder

Delivery: Call to check availability of completed cores.

Special features: We can supply you with a core cylinder for this kit for an aditional $301.00, allowing you to keep your stock parts and keep racing until your kit arrives.

 
Additional Performance Options for this Kit:
Complete Head YFZ450 Head 06 $1291.76 Complete 2006 head with everything.
41mm Keihn Carb
FCR41mmYFZ
$663.00 Increases Performance Dramatically everywhere - TPS and Hot Start.
Web 187+5
187+5
$425.00
Excellent mid and top increase w/o loss of bottom.
Porting for application  
port4strokehead
$400.00
Increases head performance to get the most out of the increased displacement.
Valves +1 Ti
YFZ450head +1
Ti valves
$1,547.50
Adds 1.5HP to overrev - Porting, 5 angle grind, +1 Ti Intake and Exhaust with seals.
Pro Design Kit - K&N
1011-0258
$170.95
Helps in upper RPMs - We recommend foam filter (K&N for Drag and TT).
Pro Design Kit - Foam
1011-0260
$130.95
Helps in upper RPMs - We always recommend foam filter.

 
  Order this kit Now!!!! (click here)  

                                                                                                                                                                                                                                                                         
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ATTN:
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  Primary communication points:
  
Telephone: 608 224 2524
Fax:   608 224 0447
Email: techsales@maxpower-engines.com
Web: http://www.maxpower-engines.com
Max Power-RPM’s Inc.
3001 Progress Road
Madison
Wisconsin, 53716, USA
 
Secondary communication point:
Telephone: +44 (0)1452 300800
Fax: +44 (0)1452 500400
Email: aptec@poeton.co.uk
Web: http://www.poetonaptec.co.uk
APTEC Ltd
Southbrook Road
Gloucester
GL4 3DN, UK