Drag Specialties Brake and Clutch Master Cylinder Assembly
Drag Specialties Brake & Clutch Master Cylinder Assemblies for V-Twin Motorcycles
Drag Specialties has been a cornerstone of the Harley-Davidson aftermarket world since 1968, when founder Tom Rudd opened a small drag racing parts shop in Minneapolis with a singular focus: giving riders parts that perform. Over five decades later, that performance-first philosophy extends directly into their lineup of brake and clutch master cylinder assemblies — components where precision engineering and reliable hydraulic feel are non-negotiable.
Why the Master Cylinder Assembly Matters
The master cylinder is the heart of your motorcycle’s hydraulic braking and clutch actuation system. It converts hand-lever force into hydraulic pressure, which is then transmitted to the brake caliper or clutch slave cylinder. A worn or improperly spec’d master cylinder can result in a spongy lever feel, inconsistent engagement, or outright brake fade — conditions no rider should encounter. Choosing a quality replacement or upgrade assembly is one of the most impactful investments a V-Twin owner can make for both safety and confidence on the road.
What Drag Specialties Offers in This Category
Drag Specialties master cylinder assemblies are engineered with an eye toward OEM-level fitment and finish, while giving riders options that the factory never did. Their front brake master cylinder assemblies are available for a wide range of Harley-Davidson platforms — including Big Twin, Sportster XL, Touring (FLHT/FLHR/FLHX), and Softail models — spanning model years from the early 1980s through the modern era. On the clutch side, Drag Specialties offers hydraulic clutch master cylinder assemblies designed specifically for touring models running hydraulic clutch actuation, available in both chrome and satin black finishes to suit any build aesthetic.
- Multiple bore diameters — including 9/16", 11/16", 15 mm (19/32"), and 3/4" options to match OEM specifications precisely
- Single- and dual-disc configurations — ensuring correct brake bias and fluid displacement for your specific setup
- Chrome and satin black finishes — for builders who want their hand controls to complement the overall look of the bike
- DOT 3, DOT 4, and DOT 5 fluid compatibility — hydraulic clutch assemblies support Type 3 and Type 4 DOT brake fluid, while front brake assemblies are designed to work with both DOT 4 and DOT 5
- Complete assemblies with hardware — many kits include the lever, clamp half, and banjo bolt so you have everything needed for a straightforward swap
- OEM-style rebuild kit compatibility — select replacement cylinder assemblies accept standard OEM-style rebuild kits, extending service life and reducing long-term maintenance costs
Built for Harley Riders, by Riders Who Know V-Twins
What sets Drag Specialties apart in this category is the depth of model-specific fitment. Rather than offering a one-size-fits-many solution, their catalog addresses the nuances of each Harley-Davidson platform — accounting for differences in handlebar diameter, ABS vs. non-ABS setups, and single vs. dual disc configurations. Whether you’re restoring a vintage 1982 FXR or refreshing a 2017 Street Glide Special, Drag Specialties has engineered a master cylinder assembly built to the tolerances your bike demands. That model-specific attention to fitment is backed by more than 55 years of V-Twin expertise and a reputation built in the dirt of the drag strip.
Explore the full Drag Specialties catalog for more hand control components, or browse the complete range of brake and clutch master cylinder assemblies to find the right spec for your build.