NCY Big Valve Cylinder Head (58.5mm, 2 Valve); Genuine/GY6
NCY Big Valve Cylinder Head (58.5mm, 2 Valve); Genuine/GY6
$139.91
10 in stock
*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
Orders placed by 1pm EST on weekdays ship the same day.
Product Details
Description
NCY Big Valve Cylinder Head (58.5mm, 2 Valve); Genuine/GY6
Replacement Part Details
Use this part when the original component is worn, damaged, missing, or no longer working correctly. Many scooter parts can look similar but use different sizes, plugs, brackets, thread patterns, or mounting styles, so careful comparison before purchase is recommended.
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: GY6
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Is this for GY6 scooters?
A: This SKU is listed with GY6 engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 2 lbs |
|---|---|
| Dimensions | 7.5 × 7 × 2.75 in |
NCY's Big 2-Valve Cylinder head lets that cylinder on your Genuine Buddy 125/150/170i, Blur 150, or GY6 bike breathe easier.Â
- Dimensions: 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: 45<51mm
- Exhaust Threads: M8
157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:
| 157QMJ | 161QMK | 152QMI | 1P61QMK |
| YN1P57QMJ | 1P52FMI | 154FMI | JJ157QMJ |
| 1P57QMJ | BN157QMJ | BN161QMK-A | Other QMJ, QMK, and QMI models |
Don't see your engine listed? If the engine code includes "QM" or "FM", this product is compatible with your vehicle.
About NCY: NCY is the aftermarket performance parts leader for most popular scooter brands including Honda, Yamaha, Genuine, Vespa, SYM, Lance, KYMCO, and GY6 / QMB powered scooters. Made in Taiwan with strict quality standards since 1997, NCY is ISO 9001 certified.
Made in Taiwan.
This product is intended for off-road use only.
This product is not intended for use on public roads or land.
This product is not legal for use in California on pollution-controlled vehicles. Check local laws before installing.
*Performance upgrades are considered racing parts and are not covered by warranty.
