When performance and precision matter on two wheels or off road, Wilwood Motorcycle & ATV Master Cylinders deliver unmatched braking control, reliability, and responsiveness. Built for riders who demand more from their machine—whether it’s trail, track, or daily ride—these master cylinders upgrade everything from fluid flow and feel to reliability and durability.

These powerful components are engineered with a 19 mm bore for ATV versions, available in both left-hand and right-hand mounting configurations. They include rugged aluminum housings with quality finishes that resist corrosion and heat. The fluid outlet is crafted with a 10 mm x 1.0 thread, ensuring secure sealing and compatibility with high-quality lines and fittings. Seal materials in some versions are designed specifically for DOT 5 or silicone fluids, so you get leak-free performance even with alternate braking fluids.

For motorcycles, Wilwood offers Handlebar and Forward-Control styles that are compact, lightweight, and crafted for clean installation. Bore sizes like 5/8" and 1/2" keep modulation intuitive and lever effort manageable, giving you better control with finger or foot applications.

Upgrading to a Wilwood master cylinder improves braking response, pedal feel, and modulation while reducing fade and heat soak. If your stock setup feels mushy, slow, or lacks control, installing one of these units will help restore confidence on rough terrain, high speeds, or demanding riding. Whether you need better bite for trails, more progressive feel for road, or simply better reliability under strain, this atv master cylinder line is workhorse durable. Add one to your ride—and feel the difference the next time you squeeze the lever.