Product Details
Description
Naraku Variator Control Shims for QMB139 50cc
Key Details
- NK800.07
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 | 0.3 lbs |
|---|---|
| Dimensions | 4 × 4 × 1 in |
| Condition | New |
|---|
Fine-tune your variator’s belt travel with the Naraku Variator Control Shim Kit. Installed between the drive faces, these precision steel shims lengthen the variator boss to allow full belt travel when your variator doesn’t open completely — a common issue when mixing variator components or running an aftermarket setup. Kit includes 30 shims total: 10 each of three thicknesses for precise stack-up adjustment.
For use with 20mm variator bosses only.
This product is intended for off-road use only. This product is not intended for use on public roads or land.
- Precision steel shims for variator boss length adjustment
- Allows full belt travel when variator does not open completely
- 30-piece kit: 10 each of 0.1mm, 0.2mm, and 0.5mm shims
- For use with 20mm variator bosses only
- Fits stock and aftermarket variators on a wide range of 50cc platforms
- Boss diameter: 20mm
- Shim thicknesses: 0.1mm, 0.2mm, 0.5mm
- Quantity: 30 pieces (10 of each size)
- Material: Steel
- Brand: Naraku
| Make | Model / Engine | Notes |
|---|---|---|
| Generic / Chinese | QMB139 (GY50) 50cc / 49cc | Stock and aftermarket variators with 20mm boss |
| Honda | Ruckus (NPS50), Metropolitan, Elite SA50, Elite SR50 | 2-stroke Elite SA/SR; stock variator |
| Kymco | ZX50, Super 8, Super 9 | Stock variator with 20mm boss |
| SYM | DD50 | Stock variator with 20mm boss |
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