This kit includes 1 - OEM Yamaha Crank Shaft and 2 - OEM Bearings. This crank is the new 1TD crankshaft found in the newer YFZ450's. It has a longer stroke than the previous 18P crank shaft. Check with your motor builder for more details.
1 - 1TD-11400-00-00
2 - 93306-30644-00