WEIYINGSI Right Brake Master Cylinder – 10mm for 50–125cc Dirt Bikes (Taotao Sunl)

Upgrade your bike’s braking with confidence

The WEIYINGSI Right Brake Master Cylinder is designed for 50–125cc ATVs and youth dirt bikes, offering a smooth, intuitive right-hand control with a 10mm banjo bolt. Crafted to fit 7/8" handlebars, this compact unit aims to provide reliable front braking performance when speed and terrain demand it most.

Compatibility and fit are central to a clean, hassle-free upgrade. The master cylinder is built to fit most 50–125cc bikes, and the included installation guide helps you verify compatibility by comparing measurements of your current oil screw. A precise fit means a seamless swap that preserves your bike’s balance and control.

Key compatibility and fit

• Right-hand brake action designed for bikes with throttle and brake levers on the same side
• 10mm banjo bolt standard for straightforward installation
• Designed for 7/8" handlebars and popular 50–125cc dirt bikes
• Suitable for 50–125cc kid’s off-road bikes with proper verification of screw size

Durability, seals, and performance

• Heavy-duty pump body built to withstand high-pressure braking forces
• Nitrile rubber seals resist heat, oil, and low temperatures for consistent response
• Designed to maintain reliable braking feel across a range of riding conditions

Installation and support

The kit includes an easy-to-follow instruction manual that guides you through the swap with standard hand tools. The clear steps help you complete the replacement without guesswork, reducing downtime and keeping your ride ready for the next session.

Quality assurance

Customer satisfaction matters. If you’re not happy with the part’s quality, a replacement can be requested within one year of purchase, reflecting a commitment to riders who rely on dependable components for their adventures.

Before you buy, measure and compare your old brake pump’s oil screw size and confirm handlebar compatibility. If you’re seeking a compact, right-side brake upgrade that pairs with 7/8" handlebars on a 50–125cc bike, this WEIYINGSI option may fit your needs as a potential improvement rather than a guaranteed result.