BikeMaster Yamaha Front Sprocket 520 15T 1978-gmc-k15-sierra-classic-esi4511400 NM1-XTSS kit features an Xtreme

NM1-XTSS kit features an Xtreme pressure plate for the most demanding driver

and is bolted into the same mounting points as the spare tire carrier

5"round T-304 stainless steel tips on each tail pipe

40mm Oversized Main Bearing Set (MOQ 300)

BikeMaster Yamaha Front Sprocket 520 15T 1978-gmc-k15-sierra-classic-esi4511400 NM1-XTSS kit features an XtremeMeticulously engineered using the highest quality materials and industry leading technology to provide the best replacement sprockets for your motorcycle. BikeMaster Front Sprockets are machined from 20CrMnTi, shot peened for longer wear and heat treated for extended durability. A perfect match for the BikeMaster line of chains. Reliable construction ensures consistent wear resistance across all available tooth counts and models in the series