




GY6 49cc 50cc 80cc 100cc CVK Carburetor Carb Main Jet 139QMB 139QMA #78 #80 #85 #87 #88 #90 #92 #94 #96 #98 (10 pcs set) Compatibility: Designed for GY6 49cc, 50cc, 80cc, and 100cc engines, including 139QMB and 139QMA models. Set Includes: 10 main jets in sizes: #78, #80, #85, #87, #88, #90, #92, #94, #96, and #98. Product Details: Thread Size: M4 x 0.70 Overall Length: 7mm Style: Round-style main jet for precision carburetor tuning. Tuning Tips: Start with a larger jet size than estimated and gradually reduce the size in small increments. This method ensures a proper air-fuel mixture and prevents running too lean. Key Features: -Ideal for tuning carburetors to optimize performance. -Suitable for a range of GY6 engines, enhancing fuel efficiency and power. -Precision-made with high-quality materials for durability and consistent performance. Note: Always verify the appropriate jet size for your specific engine before installation. Pickup Locations: Near Markham Road & 14th Avenue, Markham, or 500 Esna Park Dr, Markham. Thank you for your interest in these items. Please also have a look at my other items on sale.