Gasket Set - 52.4mm 89cc Big Bore Kit for Scooters & Mopeds
ITEM# TT-15686
Guarantee Safe Checkout
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Description
Gasket Set for 89cc QMB139 Engines
This set is built for the 52.4mm big bore kit found on 89cc engines. It suits QMB139 (1P39QMB) platforms and is meant to keep a firm seal under full compression. If you are looking for upgrades, you can browse scooter big bore and cylinder kits for the rest of the engine work. The package contains every gasket needed to service or rebuild the cylinder.
Construction and Compatibility
The set includes three gaskets made from high-temperature composite material, and one of them is a metal head gasket ring for extra durability. It serves as a direct replacement when working on the upper end of QMB139 engines, and it is sized specifically for the 52.4mm bore. Check your bore diameter before ordering, since this set will not fit stock 39mm (50cc) or 47mm (72cc/80cc) cylinders.
When to Replace Your Gaskets
Swap out the gaskets whenever you service or overhaul the cylinder to help the engine run efficiently. Oil leaks or a drop in performance can point to worn gaskets. Checking them regularly can prevent expensive repairs and extend engine life.
Specifications
- Bore Size: 52.4mm (89cc displacement)
- Engine Platform: QMB139 / 1P39QMB (GY6 50cc 4-stroke)
- Pieces: 3 (head gasket, base gasket, tensioner gasket)
- Material: High-temperature composite + metal head gasket
- OEM Part Number: NX100.58
- Fits: Naraku 52.4mm 89cc big bore kit on QMB139 (1P39QMB) 50cc engines, off-road use
Fitment
Compatible with:
- Generic / Chinese QMB139 (GY50) 50cc, any brand (must be equipped with Naraku 52.4mm BBK)
- Tao Motor / TaoTao ATM50-A1 (Pony 50), Speedy 50, VIP Future Champion (QMB139 platform)
- Wolf Brand RX-50, Islander 50, Blaze 50 (standard QMB139 architecture)
- Ice Bear / Amigo Rocket, Q6, Rocky, J-50 (50cc short-case or long-case QMB139)
- Honda Metropolitan (2013+, only models converted to QMB139-style BBK)
- Kymco Agility 50, People 50 (52.4mm engine conversions only)
How to choose: Only use this set with a 52.4mm bore cylinder. It will not fit stock 39mm (50cc) or 47mm (72cc/80cc) cylinders.
Shop more: Scooter Big Bore and Cylinder Kits · Scooter Gaskets and Seals · Scooter Parts
Reviews
