70cc 2-Stroke Big Bore Kit For Chinese Scooters.This kit has a 47mm cylinder bore, 10mm wrist pin and pin bearing.For 50cc 2-Stroke 40QMB, E40QMB, 1E40QMB and 1PE40QMB Minarelli Engines to increase drive power.Please make sure to compare your old parts to the photos provided.Type:Big Bore Rebuild KitCondition:Wrist Pin Length: 36.8mmWrist Pin Diameter: 10mmPiston Diameter: 47mmDisplacement: 70ccFitment:Fits for Most Chinese Scooters With Jog / for Minarelli / for Clone MotorsFits for Jonway, for Jmstar Roketa, for Sunl, for and Many OthersNote:The gasket color is random, and the specification is not accepted.Color:Silver GrayMaterial:MetalPackage Contents:1 x Master cylinder1 x Piston ring kit1 x Wrist pin2 x Clamp ring1 x Piston2 x Paper gasket1 x Rolling pin bearingOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.