After spending the majority of our time testing and developing our products to improve this bike, we have learned exactly what this motorcycle needs to optimize the performance on dirt. No need to overthink or stress what combination to purchase. This kit is specifically designed to improve your motorcycle. AMA Limited / Stock class legal Incredible handling improvement Increased torsional flex with Billet Top Mounts Plusher feel, more control, added bump absorption Stiffer than stock Titanium Front Engine Mount Bolt to mimic Factory Race Team welded on frame gusset Developed by top industry professionals Used by the top factory teams Includes: two (2) titanium titanium front mounts two (2) aluminum front mount spacers two (2) titanium M8 front engine mount bolts one (1) titanium M10 front engine mount bolt two (2) aluminum top engine mounts FitmentYamaha YZ250F 24-26Yamaha YZ250FX/WR 25-26 Parts included: EMF-Y2F-080 Engine Mount Front x2EMFB-125-M10142 Engine Mount Front Bolt x1EMFB-125-M8142 Engine Mount Front Bolt x2EMFS-Y2F-050 Engine Mount Front Spacer x2EMT-Y2F-002L Engine Mount Top L x1EMT-Y2F-002R Engine Mount Top R x1