Product Details
Description
Naraku Crossover Exhaust for QMB139 50cc
Key Details
- 137-5
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: 50cc, QMB139
- Engine Code: QMB139
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 QMB139 engine?
A: This SKU is listed as compatible with QMB139 engine-code fitment. Always compare your original part and scooter details before ordering.
Q: Is this for 50cc scooters?
A: This SKU is listed with 50cc engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 10.3 lbs |
|---|---|
| Dimensions | 12 × 10 × 30 in |
The Naraku Crossover Exhaust is a performance-oriented replacement exhaust tailored specifically to the QMB139 4-stroke 50cc engine. The crossover pipe design targets top-end power gains over the stock exhaust, while the real carbon fiber silencer keeps the look clean and stealthy. Designed to European road standards — removing the manifold restrictor delivers a significant additional performance improvement.
Key Features
- Crossover pipe design for top-end performance boost over stock
- Real carbon fiber silencer with black finish
- Removable silencer for maintenance or tuning
- Designed to European road standards
- Removing the manifold restrictor significantly improves performance
- Does not include mounting bolts
- Head Pipe Bolt Hole Spacing: 50mm
- Head Pipe Inner Diameter: 20mm
- Silencer: Real carbon fiber, removable
- Finish: Black
- Mounting Bolts: Not included
| Engine | Displacement | Type |
|---|---|---|
| QMB139 | 49cc / 50cc | 4-stroke horizontal |
This product is intended for off-road and racing use only. Not intended for use on public roads.





