Rear Brake Cylinder Slother for 50cc Bikes

Description

Product Overview

The Slother rear brake master cylinder is engineered for Chinese‑made 50cc, 70cc, 90cc, 110cc and 125cc dirt bikes, ATVs and quads. Crafted from premium aluminum, the cylinder offers a lightweight yet robust solution that resists wear, corrosion and rust even in the harshest off‑road conditions. With a bolt pattern of 0.4″ (10 mm), it matches the standard mounting holes found on most models, ensuring a perfect fit without the need for additional adapters. The cylinder measures 7.48 × 2.36 × 0.94 inches and weighs only 7.4 oz, contributing to reduced unsprung weight and improved handling. Designed with a 1:1 repair mold, the unit can be installed quickly, and the adjustable mounting hole design allows fine‑tuning to accommodate slight variations in frame geometry.

Usage

This master cylinder is ideal for riders who demand consistent braking performance on trail rides, motocross events, and casual off‑road adventures. Whether you are upgrading a stock setup on a Taotao, BMS, Roketa, Xpro, Apollo, SSR, Pitster, Piranha, Sunl or similar model, the Slother cylinder delivers the modulation needed for confident corner entry and rapid stops on steep descents. It is also suitable for light‑weight street‑legal scooters that share the same bolt pattern, making it a versatile choice for a range of powersports applications.

Why Choose Us

Slother stands behind every component with a commitment to quality and rider satisfaction. The aluminum alloy used is selected for its high strength‑to‑weight ratio, providing durability without adding unnecessary mass. Each cylinder undergoes rigorous testing for pressure tolerance and leak resistance, ensuring it meets or exceeds OEM specifications. Our customer support team is available to assist with installation guidance, brake bleeding procedures, and any warranty concerns, reinforcing our dedication to a long‑term relationship beyond the point of sale.

Key Features

• High‑grade aluminum construction for superior wear and corrosion resistance.
• 0.4″ (10 mm) bolt pattern compatible with most 50cc‑125cc dirt bikes and ATVs.
• 1:1 repair mold design enables quick, tool‑free installation.
• Adjustable mounting holes allow fine‑tuning to match frame tolerances.
• Lightweight (7.4 oz) design improves handling and reduces unsprung weight.

FAQ

Will this cylinder fit my 90cc Chinese ATV?

Yes, the 0.4″ (10 mm) bolt pattern is standard across most Chinese‑made 50cc‑125cc models, including 90cc ATVs. Verify the mounting hole size on your frame and you should have a direct fit.

Do I need special tools to install the cylinder?

No special tools are required. The 1:1 repair mold allows you to mount the cylinder with basic hand tools, and the adjustable holes let you align it without additional machining.

How do I bleed the brake system after installation?

After mounting, connect a clear hose to the bleed nipple, pump the brake lever several times, and release the fluid while the lever is depressed. Repeat until no air bubbles appear in the hose. This ensures optimal brake performance.

Is the aluminum prone to cracking under heavy use?

The aluminum alloy used is specifically chosen for its high fatigue resistance. Under normal off‑road conditions and proper maintenance, the cylinder will not crack. Avoid extreme over‑pressurization beyond the manufacturer’s specifications.

What warranty does Slother provide?

Slother offers a one‑year limited warranty covering manufacturing defects. If you encounter any quality issues within this period, contact our support team for a replacement or repair solution.