52mm Cylinder Head Assembly GY6 49cc 50cc to 105cc Engine - Compatible with 139QMA/139QMB Moped, ATV, Go Kart, Quad Dirt Bike, Chinese Scooter(Non-EGR)‌

52mm Cylinder Head Assembly GY6 49cc 50cc to 105cc Engine - Compatible with 139QMA/139QMB Moped, ATV, Go Kart, Quad Dirt Bike, Chinese Scooter(Non-EGR)‌

• Dramatic Performance Upgrade: Experience a night-and-day difference in power with significantly larger valve sizes (23mm intake vs. 18.5mm stock; 20mm exhaust vs. 16mm stock) and superior porting compared to standard OEM cylinder heads.
• Complete & Convenient Installation Kit: This all-in-one package includes everything you need for a straightforward installation: 1 cylinder head, 6 bolts, 1 full gasket kit, and 2 industrial gloves for safe and easy handling.
• Enhanced Engineered Features: Designed for robust power output, this head provides excellent heat dissipation, optimal oil efficiency, and reliable, stable performance. It features a 52mm combustion chamber and is a direct fit for GY6 105cc engines (compatible with 64mm short valve style heads).
• Premium Durable Construction: Crafted from high-quality aluminum alloy, this aftermarket cylinder head is built for exceptional durability and a long service life, offering an affordable performance upgrade that is easy to install.
• Optimized EGR-Free Design: The elimination of the EGR port enhances airflow dynamics for improved engine breathing and superior performance characteristics.