Since the Kitaco H-Beam connecting rod is much larger than stock, there will be cylinder skirt interference with stock cylinder kits or kits under 164cc. The Kitaco Crank Shaft Assembly is designed to be used with cylinder kits that is at least 60mm bore (164cc and up).
This crank is pre-assembled together with the Kitaco forged H-Beam connecting rod, which makes it drop-in ready!
This crank assembly is not required to be paired up with the Kitaco NEO big bore kits, so it will work with other brands of cylinder kits that is 164cc and above.
Installation requires splitting the engine cases, professional installation is highly recommended!