Hot Rods Complete Con Rod Kit Yamaha YZ125 05-21 / Fantic XE-XX 125 21-22 Hot Rods Connecting Rods are forged and machined from 8620 case hardened Nickel Chrome moly for high pressure and temperature applications. Bearing bores are hardened and finish honed for ultimate precision down to the micron. Connecting rods come with advanced and durable bearings, crank pins and thrust washers. Use for rebuilding both Hot Rods and OEM crankshafts. Product Features: Forged and machined from 8620 case hardened Nickel Chromoly steel. Bearing bores are hardened and finish honed for ultimate precision down to the micron. Includes the most advanced and durable bearings, crank pins, and thrust washers. Compatible with rebuilding Hot Rods and OEM crankshafts.