Big Bire 180cc 63mm Cylinder Kits. 4 stroke / 4T youth ATV / UTV. Design & Made in Taiwan.
This is not for GY6 engine or scooter.... RZR 170 & Cobra 180 cylinder bolt pattern different with GY6 engine. ONLY for Aeon Cobra 180 / Polaris RZR 170 engine. Also not for Polaris Ace150/Ranger 150 ATV. The timing chain room bolt pattern different with.RZR 170 Youth ATV - UTV. 1x 63mm bore cylinder kit. 1x piston kit (piston, rings, clips, wrist pin 15mm).
1x Gasket kit(head, base & timing chain).