New Con Rod Connecting Rod For GN125 DR125 GZ125 EN125 GS125 K157FMI Motorcycle Engine Parts Fit For GN125 DR125 GZ125 EN125 GS 125 K157FMI , crankshaft piston mounting structure ,suits daily street motorcycle riding Direct engine internal replacement ,aligns piston pin crank journal size ,no casing or auxiliary machining needed Transmits piston power evenly to crankshaft ,reduces internal engine vibration ,keeps steady power output at different rotation speeds forged rod body with smooth polished bearing surfaces ,adopts temperature stable blank ,slows surface abrasion during long mileage Produced following dimensional parameters ,fits piston pin crank journal with minimal clearance ,maintains stable internal engine operation