Product Details
Description
Master Cylinder Assembly & Brake Switch, go. max; CSC go.
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: CSC and other compatible models may apply.
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 CSC?
A: This SKU is listed with CSC model fitment where the scooter also matches the listed engine or fitment notes.
Additional information
| Weight | 1 lbs |
|---|---|
| Dimensions | 10.5 × 3.5 × 3 in |
Restore full hydraulic front braking with this OEM right-side front brake master cylinder assembly for the CSC Go and QMB139-engine Chinese scooters equipped with hydraulic disc brakes. Black finish with integrated DOT fluid reservoir, ball-end brake lever, banjo bolt hydraulic output fitting, and two-wire brake light switch pigtail (green/blue wires, bare spade terminals).
Key Features
- Complete Assembly: Master cylinder, integrated fluid reservoir, ball-end lever, and brake light switch included.
- Integrated Brake Light Switch: Two-wire pigtail (green/blue) with bare spade terminals — plugs directly into factory harness.
- Banjo Bolt Hydraulic Output: Standard fitting for hydraulic disc brake hose connection.
- Right-Side Fitment: Front brake (right handlebar).
- SKU: 1000-4038
- Side: Right (front brake)
- Brake Type: Hydraulic disc
- Reservoir: Integrated, with DOT warning label cap
- Lever: Ball-end, black
- Output Fitting: Banjo bolt
- Switch: 2-wire brake light switch, green/blue pigtail, bare spade terminals
- CSC Go (all versions with hydraulic front disc brake)
- CSC Go MAX (hydraulic front disc brake)
- QMB139-engine Chinese scooters with hydraulic front disc brake systems
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