The Formula Cura sits outside the rest of the Formula family. Older Formula hydraulics (Oro, C1, R1, R0, K24, K18) share a Bleeding Edge-compatible caliper port and run DOT 5.1, which puts them on the SRAM Ultimate bleed bench. The Cura broke from that pattern when Formula redesigned the platform around mineral oil and a Cura-specific caliper port; the only Formula brake in current production that needs its own kit. The Premium Gold Cura kit is what Bleedkit.com built to cover it. What's in the kit A 100 ml bottle of Bleedkit.com's Gold mineral oil ships with the kit; Gold is Bleedkit's own mineral-oil formulation with a high initial boiling point and a viscosity index suited to consistent lever-feel through the bleed cycle. Two 20 ml syringes drive the bleed at the lever and caliper ends. Two M5 assemblies fit the Cura's lever-side master cylinder. The kit includes two bleed blocks — one for 2-piston Cura calipers and one for 4-piston Cura calipers. The kit also carries a Torx T10 wrench and spare O-rings. Compatibility The kit fits every Formula Cura generation in current production. It does not fit the older DOT-based Formula family (Oro, C1, R1, R0, K24, K18); those run DOT 5.1 and are covered by the SRAM Ultimate kit instead. It does not fit any Shimano, SRAM, Magura, or Tektro / TRP brake, all of which use different lever-and-caliper geometries. The fluid is included; bringing Cura service in-house from a single-bike workshop is roughly an empty-bench-to-bled-bike-in-one-box decision. Specs Fluid: 100 ml Bleedkit.com Gold mineral oil Syringes: 2x 20 ml Lever-end assemblies: 2x M5 Bleed blocks: one for 2-piston calipers, one for 4-piston calipers Wrench included: Torx T10 Made by Bleedkit.com (Ljubljana, Slovenia) Includes: 100 ml Bleedkit.com Gold mineral oil, 2x 20 ml syringes, 2x M5 assembly, Torx T10 wrench, spare O-rings, bleed block for 2-piston brakes, bleed block for 4-piston brakes. Built in Ljubljana Bleedkit.com builds per-brake-system kits in Ljubljana, Slovenia and has done so since 2011; distribution through Euro Toolworks is the same path that brings Unior cycling tools to the North American market. Unior has been forging hand tools in Zreče since 1919, and sponsors professional road and mountain-bike race teams. The Formula Cura kit fills the gap that the SRAM Ultimate kit cannot fill: the Cura's port is Cura-only, and the fluid is mineral rather than the DOT 5.1 the rest of the Formula family runs. One kit, one brake family, one fluid. Pro tip from our mechanics A Cura bleed runs in the same gravity-then-pressure cadence as a Shimano bleed, with one difference at the lever end: the Cura lever needs more dwell time at the funnel before the caliper draw, because the master-cylinder bore is smaller and the air column above the piston takes longer to walk into the funnel. The bench-timer rule we use on Shimano (settle for at least a minute after the lever finger-stroke) lengthens to closer to two minutes on the Cura. The fluid behaves cleanly once it is settled; the wait is the work. Whether the Cura kit is the right one for your bike, or whether you are looking at the older DOT-based Formula and need the SRAM Ultimate instead, is laid out in our compatibility guide: Which bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →
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