2016 Yamaha YZ250X Cylinder Porting / Head Mod / Valve Mod

With the help of Triangle Cycles we got the spec dialed in for the 2016 YZ250X.  Send us your Cylinder, head and Center Valve and we will mod it out to use 110 octane race fuel, the stock piston …

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Yamaha YZ276F Big Bore kit 2014-Current

Please call to order 608-842-0680  $895 Fits 2014 – Current YZ250F   Includes: Your OEM cylinder bored, sleeved, and plated to 81 mm Necessary Gaskets Custom 13.7:1 CP piston kit with DLC coated wrist pin.   Specifications: Actual Displacement =...

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Yamaha YZ262F Big bore kit 2014-Current

Please call to order 608-842-0680  $549 Fits 2014 – Current YZ250F   Includes: Your OEM cylinder bored and re-plated to 79 mm Necessary Gaskets Custom 13:1 CP piston kit with DLC coated wrist pin   Specifications: Actual Displacement = 262...

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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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YZ / WR 315cc big bore and stroker kit Yamaha YZ250F WR250F

Please call to order 608-842-0680 Availability: Built to order Regular Price: $2,395 Special Price: $1,995   Product Description For: 2001-2013 YZ / WR 250F Includes: Cylinder: Install longer forged Aluminum sleeve, and plate with Ceramic Nickel Bore coating.  Copper fire...

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YZ151 Big Bore/Stroker

Please call to order 608-842-0680 Availability: In stock. Regular Price: $1,950.00 Special Price: $1,650.00   Quick Overview YZ151 Specifications: Fits 1997-Current YZ125   Product Description Bore: Yes Stroke: Yes Actual Displacement = 150.55cc Engine Modifications Required: Cylinder: Bore, Port and...

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YZ511F Stealth Big Bore/Stroker

Please call to order 608-842-0680 Availability: In stock. $1,499.00   Quick Overview YZ511F STEALTH Specifications: Fits 2003-2009 YZ 450F   Choose option: Installed and Blueprinted: $ 500.00 We modify your cylinder   Product Description Bore: Yes Stroke: Yes Actual Displacement...

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YZ523F Ice Cube Big Bore/Stroker

Please call to order 608-842-0680 Availability: In stock. Regular Price: $2,650.00 Special Price: $2,295.00   Quick Overview YZ511F Ice Cube Specifications: Fits 2003-2009 YZ/WR 450F   Choose option: “Bolt on” – Includes cylinder and crankshaft Installed and Blueprinted: $...

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YZ523F Stealth Big Bore/Stroker

Please call to order 608-842-0680 Availability: In stock. $2,299.00   Quick Overview YZ523F STEALTH Specifications: Fits 2003-2009 YZ/WR 450F   Choose option: Installed and Blueprinted: $ 500.00 We modify your cylinder   Product Description Bore: Yes Stroke: Yes Actual Displacement...

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YZ511F Ice Cube Big Bore/Stroker

Please call to order 608-842-0680 Availability: In stock. Regular Price: $1,799.00 Special Price: $1,445.00   Quick Overview YZ511F Ice Cube Specifications:Fits 2006-2009 YZ450F   Choose option: “Bolt on” – Includes cylinder and crankshaft Installed and Blueprinted: $500.00   Product...

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YZ502F Stealth Big Bore/Stroker

Please call to order 608-842-0680 Availability: In stock. $2,060.00   Quick Overview YZ502F STEALTH Specifications: Fits 2003-2009 YZ/WR 450F   Choose option: We modify your cylinder Installed and Blueprinted: $ 500.00   Product Description Bore: Yes Stroke: Yes Actual Displacement...

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YZ491F Stealth Big Bore/Stroker

Please call to order 608-842-0680 Availability: In stock. $999.00   Quick Overview YZ491F STEALTH Specifications:Fits 2003-2009 YZ450F   Choose option: We modify your cylinder Installed and Blueprinted: $ 500.00   Product Description Bore: Yes Stroke: Yes Actual Displacement =...

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YZ488F Ice Cube Big Bore

Please call to order 608-842-0680 Availability: In stock Regular Price: $1,249.00 Special Price: $895.00   Quick Overview YZ488F Ice Cube Specifications:Fits 2003-2009 YZ/WR 450F   Choose option: “Bolt on” – Includes cylinder Installed and Blueprinted: $ 300.00   Product...

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YZ488F Stealth Big Bore

Please call to order 608-842-0680 Availability: In stock. $950.00   Quick Overview YZ488F STEALTH Specifications: Fits 2003-2009 YZ/WR 450F   Choose option: We modify your cylinder Installed and Blueprinted: $ 300.00   Product Description Bore: Yes Stroke: No Actual Displacement...

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YZ478F Stealth Big Bore – Max Power Built

Please call to order 608-842-0680 Availability: In stock. Regular Price: $580.00 Special Price: $499.00   Quick Overview YZ478F STEALTH Specifications:Fits 2003-2009 YZ450F & WR450F   Choose option: (03-05) “Bolt on” – Includes cylinder: $ 125.00 (06-08) “Bolt on” –...

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YZ468F Stealth Big Bore

Please call to order 608-842-0680 Availability: In stock. $599.00   Quick Overview YZ468F STEALTH Specifications: Fits 2003-Current YZ/WR 450F   Choose option: We modify your cylinder Exchange cylinder: $ 75.00 “Bolt on” – Includes cylinder: $ 300.00 Installed and Blueprinted:...

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YZ/WR445F Stealth Big Bore

Please call to order 608-842-0680 Availability: In stock. $589.00   Quick Overview YZ/WR445F STEALTH Specifications: Fits 2000-2002 YZ/WR426F   Choose option: We modify your cylinder Exchange cylinder: $ 75.00 “Bolt on” – Includes cylinder: $ 503.00 Installed and Blueprinted: $...

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YZF / WR 300cc Yamaha Big Bore / Long Rod Stroker YZ250F WR250F

Please call to order 608-842-0680 Availability: Built to order Regular Price: $2,495 Special Price: $1,950   Product Description For: 2001-2013 YZ / WR 250F Includes: Cylinder: Install longer forged Aluminum sleeve, and plate with Ceramic Nickel Bore coating.  Copper fire...

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YZ 292F Stealth big bore and stroker

Please call to order 608-842-0680 Regular Price: $1,595 Special Price: $1,375.00   Quick Overview Fits 2003-2013 YZ250F   Product Description Includes: Modify OEM Cylinder with forged aluminum liner. Plated with Ceramic Nickel Bore coating. Copper fire ring installed around combustion...

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YZ/WR 276F Stealth big bore

Please call to order 608-842-0680 Regular Price: $1,095.00 Special Price: $895.00   Quick Overview Fits 2001-2013 YZ250F and WR250F   Product Description Includes: Cylinder Modifications: OEM Cylinder with forged aluminum liner installed. Plated with Ceramic Nickel Bore coating.  Copper fire...

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