Zongshen 125 54x54 420 15T Front Sprocket – 20mm
Brand-new unbranded 420 pitch, 15-tooth front sprocket for the documented Zongshen 125cc 54 x 54 mm engine family using a 20 mm countershaft.
Product Details
- Position: Front / countershaft sprocket
- Chain pitch: 420
- Tooth count: 15T
- Countershaft family: Large 20 mm type
- Spline count: 6
- Condition: Brand new
- Type: Unbranded aftermarket replacement
- Quantity: 1 sprocket
Verified Fitment Family
| Make / Engine | Application | Notes |
|---|---|---|
| Zongshen | 125cc horizontal engine, 54 x 54 mm bore/stroke, 20 mm countershaft | DrATV specifically lists 14T/15T 420 sprockets for this engine family |
Important Fitment Information
Some Zongshen 20 mm countershafts have shorter inner spline teeth and may require a different sprocket profile or modification. Compare the original sprocket carefully before ordering.
Changing front-sprocket tooth count changes acceleration and road speed for a given engine rpm.
Do not order by engine capacity alone. Chinese horizontal engines use more than one countershaft spline size. Many YX/Piranha engines and several SSR/Pitster Pro models use the smaller 17 mm pattern, which is not the same as this 20 mm sprocket.
What's Included
One 420 pitch, 15-tooth front sprocket. Retainer plate, bolts and other fitting hardware are not stated as included.
Installation
Confirm chain pitch, shaft spline size, chain alignment and sprocket-retainer arrangement before fitting. Inspect the drive chain and rear sprocket for wear and replace worn drivetrain components as required.