2-piece piston ring set 40mm/44mm, suitable for off-road accessories for mini 4WD 47/49cc.

1. Suitable for older 47cc - 49cc engine models with 40mm pistons. The kit includes one piston, two piston rings, one 10mm piston pin, two circlips, and one upper bearing. Product: Piston and Piston Ring Kit Name: Piston Kit Type: Piston Kit Material: Metal Center of pin hole to crown: 12.5mm / 0.49in Crown height: 12.5mm / 0.49in Pivot pin diameter: 10mm / 0.39in Pin length: 36.5mm / 1.44in Ring thickness (maximum): 1.46mm / 0.057in Thickness of both upper rings: 1.46mm / 0.057in Number of pistons/oil rings: 2 Upper bearing included: yes Piston top shape: domed Piston size: 40mm Lower piston diameter: 40 mm/1.57" Lower piston diameter: 40 mm/1.57" Piston height: 40 mm/1.57" Upper piston diameter: 40 mm/1.57" 44 mm piston dimensions: Lower piston diameter: 44 mm/1.73" Lower piston diameter: 44 mm/1.73" Piston height: 42 mm/1.65" Upper piston diameter: 44 mm/1.73" Notes: 1. We provide as many clear pictures and measurements as possible. Please check as much as possible to make sure the item matches what you need. 2. Please allow 0.5-1 inch difference due to manual measurement. (1 inch = 2.54 cm) 3. Installation instructions are not included in the package. Professional installation is highly recommended. The package includes (as shown): 1 piston, 2 piston rings, 2 circlips, 1 x 10mm pin, 1 upper bearing