COMPLETE ATV BOLT ON BIG BORE KITS

 
Other ATV Kit LINKS
Kawasaki Big Bore Kits
Honda Big Bore Kits
Suzuki Big Bore Kits
Yamaha Big Bore Kits
Hot Cams
Exhaust Systems
Big Bore Kits Overview
   
 

In stock, ready for immediate delivery!!

Stealth Kits Include:

  • New OEM Cylinder, bored and plated with APTICOTE 2000 Ceramic Bore Coating.
  • Complete Xtreme Coated Piston Kit, with Rings, Clips and Pin.
  • Complete Top End Gasket Kit.

Optional add ons:

  • Hot Cams
  • Complete Exhaust System

 

Yamaha 523cc Big Bore Stroker Kit

 
 

   
See what ATVaction has to say about the YFZ523 (PDF 2.2MB)
   
   
Specification:   Fits 2004-2006 Models    
Cylinder:   New Billet Aluminum ICE CUBE Cylinder  
Bore:   99mm  
Compression:   Options: 11.5:1, 12.5:1, 13.5:1 Xtreme coated piston  
Stroke:   68mm stroker crank with knife rod.  
Displacement:   523cc  
Price:  

$2560.00

 
Includes:   Billet ICE CUBE Cylinder, Custom Xtreme Coated Piston Kit and Top End gaskets  


Note: Counter balance shaft modification required.

Complete Motor Assembly: $475.00 (send in your complete motor for assembly)

 

Yamaha 508cc YFZ Dad Dog DD05 Stroker package (Stealth)

Specification:   Fits 2004-2006 Models  
Bore:   99mm Apticote 2000 coated cylinder  
Compression:   11 to 1 Xtreme coated piston  
Stroke:   Falicon 66mm stroker crank with knife rod.  
Displacement:   508cc  
Price:  

$2450.00 including cylinder
$2250.00 with cylinder exchange

 
Includes:   lengthened timing chain, adjustable cam sproket, two oil line extenders, 2 shortened head mounts, longer head bolts, space plate and top end gaskets.  
   

 Yamaha 502cc YFZ Stroker Package (Stealth)

 

 
   
   
Specification:   Fits 2004-2006 Models  
502 vs 508 HP
Bore:   97mm Apticote 2000 coated cylinder  
Compression:   12.5 to 1 Xtreme coated piston  
Stroke:   Falicon 68mm stroker crank with knife rod.  
Displacement:   502cc  
Price:  

$2350.00 including cylinder
$2150.00 with cylinder exchange

 
Includes:   New Crank, Cylinder, Xtreme Coated Piston Kit and Top End gaskets.  


Note: May require counter balance shaft modification.
Complete Motor Assembly: $475.00 (send in your complete motor for assembly)

 

 

Yamaha YFZ 488cc CYLINDER KIT (2006)

Specification:   Fits 2006 Models  

Cylinder:   New Billet Aluminum ICE CUBE Cylinder  
Bore:   99mm  
Compression:   13.1 to 11.1  
Stroke:   63.4mm  
Displacement:   488.03cc No head or case modification required.  
Price:  

$1250.00 Available for immediate delivery!!

 
Includes:   Billet ICE CUBE Cylinder, Custom Xtreme Coated Piston Kit and Top End gaskets.  
 


Add Hot Cams to your order for $340.00 (Intake and exhaust cams!!)

Complete exhaust system additional $450.00

 

 Yamaha YFZ 450 to 480cc Intimidator BIG BORE KIT (Stealth)

YFZ 480 Intimidator Big Bore Kit

Specification:   Fits 2004-2006 Models  
Bore:   99mm  
Compression:   13:1 or 11:1 your option (Compression Ratios can be adjusted by base gasket configurations)  
Stroke:   62mm  
Displacement:   477.25cc No head or case modification required.  
Price:  

$875.00 Available for immediate delivery!!

 
Add Hot Cams to your order for $340.00 (Intake and exhaust cams!!)
Complete exhaust system
additional $450.00
 

 

Yamaha YFZ 478cc CYLINDER KIT (2004-2006)

 
Specification:   Fits 2004-2006 Models  

Cylinder:   New Billet Aluminum ICE CUBE Cylinder  
Bore:   99mm  
Compression:   13.1 to 11.1  
Stroke:   62mm  
Displacement:   477.25cc No head or case modification required.  
Price:  

$1250.00 Available for immediate delivery!!

 
Includes:   Billet ICE CUBE Cylinder, Custom Xtreme Coated Piston Kit and Top End gaskets  
 


Add Hot Cams to your order for $340.00 (Intake and exhaust cams!!)

Complete exhaust system additional $450.00

 

 

Honda TRX 450R to 480CC BIG BORE KIT (Stealth)

TRX 480 Intimidator Big Bore Kit

Specification:   Fits 2004-2006 Models  
(Shown with optional Hot Cam)
Bore:   97mm  
Compression:   13:1 (Compression Ratios can be adjusted by base gasket configurations)  
Stroke:   64.8mm  
Displacement:   478.86cc No head or case modification required.  
Price:  

$925.00 Available for immediate delivery!!

 
Add a Hot Cam to your order for $150.00
Complete exhaust system additional $450.00
 

 

Honda TRX 450 to 520cc Dominator Stroker Package (Stealth)

Specification:   Fits 2004-2006 Models  
Bore:   97mm  
Compression:   12.5:1  
Stroke:   70.4mm  
Displacement:   520.24cc No head or case modification required.  
Price:  

only $1925.00 ($2400 installed by Max Power)

 
Includes:   Stroker Crank, Apticote 2000 Cylinder, Xtreme Piston and Top End Gasket Set.
 

Add a Hot Cam to your order for $150.00
Complete exhaust system additional $450.00
Complete Motor Assembly: $475.00 (send in your complete motor for assembly

Purple: Stock
Green: 480 (top end motor) good for desert racing
Blue: 480 (Midrange motor) good for woods or MX
Red: 520 Dominator kit

 

Suzuki / Kawasaki / Arctic Cat 400 to 455cc Rocket BIG BORE KITS (Stealth)

Also available in 450cc for those who need to stay within the 450cc limit.

The 455cc Rocket kit includes: New OEM cylinder, aluminum oversized sleeve installed, bored and plated with APTICOTE 2000 Ceramic bore coating. Complete Xtreme coated piston kit, and top end gasket kit.

LTZ, KFX, DVX 455 Rocket Kits

 

 
   
   
  Red = stock
Green = Stock machine piped and jetted
Blue = Stage 4 Z455 piped and jetted
 
Specification:   Fits 2003-2006 Models (LTZ400, KFX400 and DVX400)  
(Z455 Rocket shown with optional
Hot Cams and Edelbrock Carb.)
Bore:   96mm  
Compression:   12.5:1 (Compression Ratios can be adjusted by base gasket configurations)  
Stroke:   62.6mm  
Displacement:   453.11cc
No head or case modification required.
 
Price:   $1200.00 Available for immediate delivery!!  
Add Hot Cams to your order for $320.00 (Intake and exhaust cams)
Complete exhaust system additional $435.00
 
  See a review of the Max Power Z455 in ATV Sport Magazine
 

SUZUKI 510

Specification:   Fits 2003-2006 Models  
Z400 = Purple
Z455 = Green
Z510 with revving pipe = Blue
Z510 with low/mid pipe = Red
Bore:   96mm Apticote 2000 coated cylinder.  
Compression:   12.5:1 Xtreme coared piston.  
Stroke:   Falicon 70.4mm stroker crank with knife rod.  
Displacement:   510cc  
Price:   $2350.00 including cylinder
$2050.00 with cylinder exchange
 
Includes:   New Crank, Cylinder, Xtreme Coated Piston Kit and Top End gaskets.  
Note:   May require counter balance shaft modification.
     
Complete Motor Assembly: $475.00 (send in your complete motor for assembly)

Add-on options for your order:
Hot Cams (Intake and exhaust cams) -$320.00
Complete exhaust system additional -$435.00



                                                                                                                                                                                                                                                                         

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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