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Universal Rear Brake Master Cylinder (Black) for 50cc-125cc Dirt Bike & ATV
Universal Rear Brake Master Cylinder (Black) for 50cc-125cc Dirt Bike & ATV
5.0 / 5.0
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Product Overview
Upgrade your stopping power with this high-performance Black Rear Brake Master Cylinder. Specifically designed for 50cc to 125cc off-road vehicles, this unit combines precision-machined aluminum with an optimized hydraulic system. The tactical black anodized finish doesn't just look great—it provides a heavy-duty shield against corrosion, ensuring your brakes remain responsive and reliable through mud, dust, and intense trail rides.
Product Compatibility
| Vehicle Type | Displacement Range | Common Compatible Brands |
| Dirt Bikes / Pit Bikes | 50cc, 70cc, 110cc, 125cc | SSR, Apollo, TaoTao, Coolster, Piranha |
| ATVs / Quads | 50cc, 90cc, 110cc, 125cc | TaoTao, Buyang, Kazuma, SUNL, Redcat |
| Chinese Motorcycles | 50cc - 125cc | Most small-frame horizontal & vertical engines |
Specifications
| Feature | Details |
| Mounting Distance | 45mm (1.77") Center-to-Center |
| Banjo Bolt Size | 10mm x 1.25 |
| Shell Material | Precision-Machined Aluminum Alloy |
| Surface Finish | Black Anodized Anti-Corrosion Coating |
| Internal Seals | High-Temperature & Abrasion Resistant |
| System | Hydraulic Rear Brake |
Key Features
- Sensitive & Linear Feedback: Engineered to provide a predictable and accurate braking feel, allowing for precise modulation and improved control during technical maneuvers.
- Rugged Anodized Protection: The deep black anodized coating provides superior resistance to scratches and environmental corrosion, maintaining its professional look and structural integrity in harsh conditions.
- High-Pressure Internal Seals: Equipped with premium-grade internal seals that withstand high temperatures and friction, ensuring a vacuum-tight system that won't leak or lose pressure under heavy use.
- Optimized Hydraulic Flow: The internal galleries are precision-machined to reduce braking delay and improve overall hydraulic efficiency, resulting in a firmer pedal feel.
- Direct 45mm Bolt-On Fit: Standardized 45mm mounting holes and a 10mm banjo port make this a universal "plug-and-play" replacement for the majority of Chinese-manufactured pit bikes and ATVs.
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Fitment FAQ
Will this part fit my specific model and year?
This brake assembly is intended for Vehicle Type; Displacement Range; Common Compatible Brands; Dirt Bikes / Pit Bikes; 50cc, 70cc, 110cc, 125cc; SSR, Apollo, TaoTao, Coolster, Piranha; ATVs / Quads. Key physical/spec details from the product data include Banjo Bolt Size: 10mm x 1.25, 50cc, 125cc. Use the compatibility table and product photos together before ordering.
Do I need to match the OEM part number?
Yes. If your original part has a stamped OEM or manufacturer number, match that number first before ordering. For this brake assembly, also compare the caliper bolt spacing, brake hose length, master-cylinder bore, lever side, banjo fitting angle, drum/hub dimensions, and handlebar diameter. This is especially important for TaoTao/SSR models because similar model names can use different parts by year or trim.
What models or situations does this part not fit?
Do not order this brake assembly for machines outside the listed compatibility, or for units with different caliper spacing, hose routing, lever/master-cylinder setup, drum/hub dimensions, or handlebar diameter. Do not rely only on the model name or engine size.
What should I check before ordering?
Before ordering, compare your original part with the photos and check the caliper bolt spacing, brake hose length, master-cylinder bore, lever side, banjo fitting angle, drum/hub dimensions, and handlebar diameter. Recheck listed specs such as Banjo Bolt Size: 10mm x 1.25, 50cc, 125cc. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.
Easy to install and easy to bleed