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 H_Beam reinforced connecting rod is designed to be used with cylinder kits that is at least 60mm bore (164cc and up).
Kitaco H-Beam Connecting Rod Kit Honda Grom 125
Stock Stroke: 57.9mm
Will work with cylinder kits 60mm and above (164cc and larger).
Installation requires splitting the crankshaft, professional installation is required.
Crank removal and installation requires splitting the engine cases and crankshaft disassembly, professional installation is highly recommended!