measure the diameter of the manifold and gasket. my stock manifold and gasket are both 22mm but i dont know if its the same for all. http://www.ebay.com/itm/XR-50-70-CR...ies&hash=item1c28834a46&vxp=mtr#ht_973wt_1037
if you wanna save a few bucks, tbots expensive
if you wanna save a few bucks, tbots expensive