ATVA Schoolboy Jr. Open – 300cc Big Bore/Stroker Engine Kits

Max Power has been refining our big bore and long-rod stroker engine packages for the ATVA National Schoolboy Jr. Open class.   Most of them are smaller bores with basically the same bottom end configurations as our previously tested kits with …

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KX264F Stealth Stroker

Please call to order 608-842-0680 Availability: In stock. Regular Price: $1,175.00 Special Price: $999.00   Quick Overview Fits 2004-Current KX250F   Product Description Engine Modifications Included: Crankshaft Modifications: Stroked and balanced Custom Stroker CP Piston Kit (14:1) This price requires...

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KXF 300cc Stealth Big Bore / Long Rod Stroker

Please call to order 608-842-0680 Availability: In stock. Regular Price: $2,270.00 Special Price: $1,695.00   Quick Overview For: 2004-Current KX250F   Product Description For: 2004-Current KX250F Includes: Cylinder: Install forged Aluminum sleeve, and plate with Ceramic Nickel Bore coating. Crankshaft:...

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KX315F Ice Cube Big Bore / Stroker

Please call to order 608-842-0680 Availability: In stock. Regular Price: $2,750.00 Special Price: $1,695.00   Quick Overview KX315F Ice Cube Big Bore w/ Long rod Stroker Crankshaft: Fits 2004 – 2008 KX250F   Choose option: “Bolt on” – Includes cylinder...

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KX277F Stealth Big Bore/Stroker

  Please call to order 608-842-0680 Availability: In stock. Regular Price: $1,999.00 Special Price: $1,575.00   Quick Overview KX277F STEALTH Specifications: Fits 2004 – Current KX250F   Choose option: Exchange cylinder and crankshaft   Product Description Actual Displacement =...

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KX276F Stealth Big Bore

Please call to order 608-842-0680 Availability: In stock. Regular Price: $925.00 Special Price: $795.00   Quick Overview KX276F STEALTH Specifications: Fits 2004 – Current KX250F   Choose option: We modify your cylinder Exchange cylinder: $ 75.00 “Bolt on” – Includes...

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KX276F Ice Cube Big Bore

Please call to order 608-842-0680 Availability: In stock. Regular Price: $1,099.00 Special Price: $895.00   Quick Overview KX276F ICE CUBE Specifications: Fits 2004 – 2008 KX250F   Choose option: “Bolt on” – Includes cylinder Installed and Blueprinted: $ 300.00...

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KX262F Stealth Big Bore

Please call to order 608-842-0680 Availability: In stock. $599.00   Quick Overview KX262F STEALTH Specifications:Fits 2004 – Current KX250F   Choose option: We modify your cylinder Exchange cylinder: $ 201.00 “Bolt on” – Includes cylinder: $ 280.00 Installed and...

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KX270F Stealth Big Bore

Please call to order 608-842-0680 Availability: In stock. $599.00   Quick Overview KX270F STEALTH Specifications:Fits 2004 – 2008 KX250F   Product Description Actual Displacement = 269cc Engine Modifications Included: Cylinder: Aftermarket Cast cylinder with nickel plating Fuel Required: 91...

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