Genuine/GY6 Big Valve Cylinder Head (58.5mm, 2 Valve)
ITEM# TT-26770
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Description
Large Valve Cylinder Head for Genuine Buddy and GY6 Engines
This large valve cylinder head suits Genuine Buddy 125, 150, 170i, and Blur 150 models, along with a range of GY6 engines. It enhances airflow inside the cylinder, which contributes to stronger overall output. It is one of the GY6 scooter parts that support engine function by helping it breathe more freely.
Performance and Compatibility
This aftermarket head uses two valves, offering better airflow than standard units. It is designed for 157QMJ-based 125cc, 150cc, and 169cc engines, so it works well for riders wanting more engine performance. Confirm that your engine code includes "QM" or "FM" before ordering to ensure it matches.
Key Features
The head is built carefully to fit a variety of scooter models. Its dimensions are 7.5 inches long, 7 inches wide, and 2.75 inches high. It includes a 54mm stud spacing and a 5mm valve stem, which allow it to sit correctly on the intended vehicles.
Specifications
- Size: 7.5"L x 7"W x 2.75"H
- Cylinder Head Stud Space: 54mm
- Valve Stem: 5mm
- Intake Manifold Bolt-to-Bolt Space: 45mm
- Intake Threads: M6
- Exhaust Bolt-to-Bolt Space: 45mm
- Exhaust Threads: M8
- Fits: GY6 150cc (157QMJ) engines with a 157QMJ-based code (for example 157QMJ, 161QMK, 152QMI)
Fitment
Fits:
- GY6 150cc (157QMJ)
How to choose: Compare the engine code stamped on your engine case with these listed codes: 157QMJ, 161QMK, 152QMI, 1P61QMK, YN1P57QMJ, 1P52FMI, 154FMI, JJ157QMJ, 1P57QMJ, BN157QMJ, BN161QMK-A, or any other QMJ, QMK or QMI code.
Where it goes: part #1 on the cylinder head diagram for the GY6 150cc (157QMJ).
Also offered: GY6 150cc (157QMJ) Engines Cylinder Head 57mm (57mm head, Blue Line brand).
Other versions: For a GY6 125 cc cylinder head that includes valve guides, see Cylinder Head (With Valve Guides) for Genuine, GY6 125 cc. For a 61mm head made for 171cc kits, see GY6 Big Valve Cylinder Head - 61mm 171cc Kits.
Shop more: GY6 Scooter Parts · Chinese Scooter Parts · Scooter Cylinder Heads & Valves · Scooter Parts
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