RFX Pro Front Sprocket Yamaha YZ250 99-24 YZF400-450 98-24 Teeth:13 300 EXC TPI 20-23

300 EXC TPI 20-23

an innovative safety feature that includes a fully integrated collapsible heel area with expanded poly-foam to absorb high impact energies during a crash

and rear waist for enhanced rider comfort

Polisport's airbox covers are produced with our exclusive technologies - IPD (in-mold plastic decals) and DGP(durable gloss propylene) - the reason our parts are more resistant and durable than the stock ones

RFX Pro Front Sprocket Yamaha YZ250 99-24 YZF400-450 98-24 Teeth:13 300 EXC TPI 20-23RFX Pro Front Sprocket (Black Zinc)Yamaha YZ250 99 20 YZF400 450 98 20 RFX Pro Series Black Zinc Front Sprockets are CNC machined to the tightest tolerances from high tensile steel and case hardened to 60 Rockwell to resist wear and ensure longevity. Pro Series sprockets also feature lightening holes were necessary and self clearing mud grooves on both sides to resist dirt build up and help prolong sprocket and drive chain life. New for 2016 they come