YZ90 (National Engine) Stroker

Please call to order 608-842-0680 Availability: In stock. Regular Price: $1,725.00 Special Price: $1,475.00   Quick Overview YZ90 Stroker Specifications: Fits 2001-2008 YZ80 and YZ85   Choose option: Send us your engine and get a 90cc stroker kit instead Spare...

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YZ112 Big Bore/Stroker

Please call to order 608-842-0680 Availability: In stock. Regular Price: $1,975.00 Special Price: $1,675.00   Quick Overview YZ112 Specifications: Fits 2001 – Current YZ80 and YZ85 Send us your engine and get a 105cc stroker kit installed.   Product...

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YZ105 Big Bore/Stroker

Please call to order 608-842-0680 Regular Price: $1,875.00 Special Price: $1,575.00   Quick Overview YZ105 Specifications: Fits 2001 – Current YZ80 and YZ85 Send us your engine and get a 105cc stroker kit installed.   Product Description Bore: Yes Stroke:...

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YZ103.5 Big Bore

Please call to order 608-842-0680 Regular Price: $900.00 Special Price: $549   Quick Overview fits 2002-2014 YZ85 Product Description Actual Displacement = 103.48cc Engine Modifications Included: Cylinder: Bore, Port and Plate. Head: Re-chamber to work with the Big Bore piston....

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YZ98 Big Bore

Please call to order 608-842-0680 Special Price: $499   Quick Overview YZ98 Big Bore Specifications:Fits 2001-Current YZ80 and YZ85 Product Description Engine Modifications Included: Cylinder: Bore, Port and Plate. Head:  Re-chamber to work with the Big Bore piston. 100...

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YZ92 Big Bore

Please call to order 608-842-0680 Be the first to review this product Availability: In stock. Regular Price: $725.00 Special Price: $499   Quick Overview YZ92 Big Bore Specifications:Fits 2001-Current YZ80 and YZ85   Product Description Actual Displacement =...

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