Bleed Kits

A clean bleed makes the difference between a brake that bites at the right point in the lever throw and one that feels spongy after a long descent. The bleed kits collection covers the hydraulic systems shoppers actually run on road and mountain bikes today: Shimano mineral oil, SRAM DOT, and Magura Royal Blood. Each system has its own funnel thread and block thickness, and a kit built for one fluid rarely fits another. Most kits in this collection come from BleedKit.com, a Ljubljana-based partner brand building system-specific bleed kits since 2011. The 2026 lineup accounts for the new Shimano R9300 and R8270 M7 funnel thread plus the 5.0 mm bleed block on SRAM Maven Bronze, so a kit bought today fits the brake on the bike today.

2026 bleed kit compatibility guide

Frequently asked questions

How do I know if my brakes use mineral oil or DOT fluid?

It depends on the brake brand. Shimano, Magura, Campagnolo, Tektro/TRP, and many Formula brakes use mineral oil. Classic SRAM (Code, Level, Guide, AXS), Hope, and Hayes use DOT 5.1. SRAM Maven is the exception — it runs SRAM Maxima mineral oil. Always check the lever or caliper marking before bleeding.

Can I mix DOT fluid and mineral oil in a brake?

No. DOT fluid and mineral oil are not interchangeable and must never be mixed — doing so swells and destroys the internal seals and can cause brake failure. Use a kit and fluid matched to your brake's system, and never reuse a syringe or hose between the two fluid types.

Which bleed kit do I need for Shimano disc brakes?

Shimano hydraulic brakes use mineral oil and a funnel that threads into the lever. Pick a Shimano-specific kit (Basic, Workshop, or Premium) with the right funnel. Note the 2026 R9300 and R8270 levers moved to an M7 funnel thread from the older M5 — confirm thread size so the funnel seats correctly.

Which bleed kit do I need for SRAM brakes?

Classic SRAM brakes (Code, Level, Guide, AXS) use DOT 5.1 and SRAM's Bleeding Edge port, so choose a SRAM DOT kit. SRAM Maven is different — it uses mineral oil and a 5.0 mm bleed block versus Code's 4.0 mm. Match the kit to the exact model so the syringes, fittings, and block thickness all fit.

Do you have bleed kits for Magura, TRP/Tektro, or Formula brakes?

Yes. Magura (Royal Blood), Tektro/TRP, and Formula Cura brakes all run mineral oil, and this collection carries system-specific kits for each, including the Magura MT and Formula Cura kits. Choosing the kit built for your brand gives you the correct funnel or syringe fitting and the right fluid.

What fluid does the kit include, and can I buy fluid separately?

Most kits in this collection are system-matched, but you can also buy fluid on its own — BleedKit.com GOLD and RED mineral oil for mineral-oil brakes, and Liqui Moly or generic DOT 5.1 for SRAM and other DOT systems. Top up with the exact fluid your brake specifies; capacities vary by model.