Bottom End

Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller spaceNo extra gaskets or leaking plastic spacers Yamaha -- YZ 250 -- (2005, 2011, 2008, 2007, 2003, 2006, 2004, 2015, 2009, 2012, 2010, 2013, 2014,...

Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller spaceNo extra gaskets or leaking plastic spacers Yamaha -- YZ 250 -- (2004, 2015, 2010, 2013, 2014, 2005, 2011, 2008, 2009, 2012, 2007, 2003, 2006,...

Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller spaceNo extra gaskets or leaking plastic spacers Suzuki -- RM 250 -- (2008, 2001, 2006, 2004, 2007, 2002, 2003, 2005)

Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller spaceNo extra gaskets or leaking plastic spacers KTM -- 250 XC-W -- (2013, 2012, 2014, 2009, 2010, 2011, 2008, 2007); KTM -- 250 SXS -- (2007); KTM...

Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller spaceNo extra gaskets or leaking plastic spacers Kawasaki -- KX 250 -- (2005, 2007, 2004, 2003, 2008, 2006)

Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller spaceNo extra gaskets or leaking plastic spacers Kawasaki -- KX 250 -- (2008, 2003, 2004, 2006, 2007, 2005)

Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller spaceNo extra gaskets or leaking plastic spacers Kawasaki -- KX 250 -- (2003, 2004, 2008, 2005, 2007, 2006)

Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller spaceNo extra gaskets or leaking plastic spacers Honda -- CRF450R -- (2006, 2007, 2004, 2008, 2005)

Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller spaceNo extra gaskets or leaking plastic spacers Honda -- CRF450R -- (2004, 2006, 2007, 2005, 2008)

Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller spaceNo extra gaskets or leaking plastic spacers Honda -- CR250R -- (2006, 2007, 2005, 2004, 2003)

Machined from 303 stainless steel that's 15% heavier than standard steel, allowing more mass in a smaller spaceNo extra gaskets or leaking plastic spacers Honda -- CR250R -- (2003, 2004, 2006, 2007, 2005)

Replacement Twin Cam "A" engine cases for stock H-D chassis only (carb and EFI)Feature greater overall strength than stock crankcasesStrong, dependable Timken?-style sprocket shaft bearingsClearanced for strokes up to and including 5"All passages between...