NCY Big Bore Cylinder Kit w/head 50mm – Honda Dio, Sym DD50
NCY Big Bore Cylinder Kit w/head 50mm – Honda Dio, Sym DD50
$179.25
Out of 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 Bore Cylinder Kit w/head – 50mm – Honda Dio, Sym DD5
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.
- Fits Models / Common Applications: Honda and SYM and other compatible models may apply.
- Fitment Notes: Big Bore
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: Will this fit a Honda?
A: This SKU is listed with Honda model fitment where the scooter also matches the listed engine or fitment notes.
Additional information
| Weight | 6 lbs |
|---|---|
| Dimensions | 6 × 6 × 5 in |
The NCY Big Bore Piston and Cylinder Kit is a perfect fit for your Honda Dio, Sym DD50 or 139QMB scooter. It gives you significantly more power and durability at a reasonable price.
- Aluminum piston: 50mm
- 2 piston rings: 50mm
- 1 wrist pin with G-clips: 42.2mm x 12mm
- Cast-iron cylinder: 50mm
- 4 studs with nuts: M6x120mm
| Â Honda Dio | Sym DD50 |
139QMB-based 50cc / 80cc engines with the following engine codes:
| 139QMA | 139QMB | 1P39QMB | 1P39QMA-2 |
| YN139QMB | JJ1P39QMB | 139FMA-2 | BD1P39QMB |
| BN139QMB | 147QMD | Other QMA models | Other QMB models |
Don't see your engine listed? If the engine code includes "QM" or "FM", this product is compatible with your vehicle.
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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.
