Grizzly 660 High Strength Front Drive Shaft, this is the shaft that fits between the front driveshaft and the engine. It transfers power from the transmission to the front wheels. The OEM shafts are notorious for wearing out due to sand and grit griding away at the locking grooves. Our shafts are made out of forged then hardened chromoly and will out perform the OE. shafts by double. Don't waste your time spending twice the money on an inferior shaft!