Meet Your New Brake Bleeding Sidekick: The Sumart UBB-40 Universal Bleed Block

Brake maintenance doesn’t have to be a messy, frustrating ritual—especially when you’ve got the right gear. Enter the Sumart UBB-40: a compact, do-it-all bleed block that’s here to take the headache out of working on 4-piston calipers. If you’re serious about keeping your braking system dialed, this tool deserves a permanent spot in your toolbox.

Simplify Your Bleed Routine

Brake bleeding can be a tedious process, especially when you're juggling incompatible tools and trying not to damage delicate components. The UBB-40 is built to eliminate that hassle. It fits a wide variety of 4-piston calipers and works as both a bleed block and a piston press. That’s right—one tool, two critical functions.

Instead of reaching for a tire lever or a specialty tool to reset your pistons, the UBB-40 does it all with precision and ease. You’ll wonder how you ever bled brakes without it.

Universal Fit. Maximum Convenience.

Not all brake systems are created equal, and hunting down a specific bleed block for each one is nobody’s idea of a good time. The UBB-40 is compatible with most major 4-piston caliper designs, saving you time and frustration during setup.

From Shimano to SRAM and beyond, this universal block slots in smoothly and does its job without drama. That’s less guesswork for you and fewer tools cluttering your workspace.

Safe for Ceramic Pistons

If you’ve ever chipped a piston during a bleed, you know the pain. The UBB-40 is designed with even pressure in mind, reducing the risk of cracking or uneven wear on sensitive ceramic pistons. Its ergonomic, centered design makes it easy to apply force evenly across both sides of the caliper.

Built to Survive Your Bench

Daily-use tools in any shop take abuse. The UBB-40 can take it. Made from tough, machined aluminum, it’s built to hold up to repeated use without bending, warping, or rounding off. Toss it in your toolbox or hang it on your wall—this thing is made to last.

Why Atlus Bike Swears by the UBB-40

At Atlus Bike, we put every product we carry through its paces before recommending it to our customers. The Sumart UBB-40 earned our stamp of approval because it’s smartly designed, reliable, and makes a common repair job much easier. That’s what we look for—and what we’re proud to offer.

Top-Tier Performance Without the Price Tag

A good bleed tool doesn’t have to cost a fortune. The UBB-40 delivers pro-level performance at a price that’s well within reach. It’s a great investment whether you're wrenching full-time or just maintaining your personal fleet.

Need a 2-Piston Version?

Working on two-piston brakes instead? Check out the Sumart UBB-20. It offers the same dual functionality and high-quality design, optimized for narrower calipers.

Take Control of Your Brake Bleeds

The Sumart UBB-40 isn’t just another workshop tool—it’s a problem-solver. Whether you're resetting pistons, bleeding hydraulic lines, or just trying to work smarter, this block delivers. Make brake work smoother, safer, and faster.

Grab yours here and take the hassle out of hydraulic maintenance—for good.