Bleedkit.com Premium Shimano Bleed Kit

A flat-bar Shimano bleed is the simplest version of a hydraulic-brake service: the lever's bleed port sits where the funnel can drop straight onto it, the caliper port is accessible without removing the wheel, and the same kit handles every brake in the family from Acera up to XTR. Skipping the dropbar adapter that the road version carries keeps the Premium Shimano Bleed Kit small enough to drop into a travel toolbox, and the funnel pattern that fits every flat-bar Shimano lever in the current catalog is the part that matters.

What's in the kit

The lever funnel is a 30 ml transparent syringe body with a brass M5 thread, sized to drop straight onto a flat-bar Shimano master cylinder. The caliper syringe is 20 ml with a long-lasting tube, and a stainless-steel insert guides the tube cleanly into the bleed nipple. The bleed block in the kit fits both 2-piston and 4-piston flat-bar Shimano calipers without swapping inserts.

Compatibility

The kit fits every flat-bar Shimano hydraulic brake currently in production: XTR, XT, Saint, Zee, SLX, Deore, Alivio, Acera, Alfine, Metrea. It does not fit drop-bar Shimano levers, which need the brass dropbar adapter and the smaller dropbar bleed block that the Premium Road Shimano kit carries. For workshops servicing both flat-bar and drop-bar Shimano, the Premium Road version is the better single-kit choice because the road kit also covers flat-bar work. The 2026 R9300 and R8270 levers are drop-bar and additionally need an M7 funnel thread; this kit fits neither.

Specs

• Funnel: 30 ml transparent, brass M5 thread
• Caliper syringe: 20 ml with long-lasting tube
• Bleed block: covers Shimano flat-bar 2 or 4-piston
• Wrench included: 7 mm
• Made by Bleedkit.com (Ljubljana, Slovenia)

Includes: 30 ml lever funnel with brass M5 thread, stainless threaded plug with hanger, 20 ml caliper syringe with tube, stainless tube insert, gravity-bleed clamp, base for funnel and adapters with spare O-ring studs, bleed block for flat-bar Shimano 2 or 4-piston brakes, rubberised one-side hook and loop strap (25 cm), 7 mm wrench, spare O-ring.

Built in Ljubljana, since 2011

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 is the official technical partner of multiple World Tour and downhill teams. The Premium Shimano kit is the lean version of the family: every piece in it fits a flat-bar Shimano lever, nothing in it is for any other brand, and the box doesn't carry parts that won't see use on an MTB Shimano service bench.

Pro tip from our mechanics

The single move that catches most home-mechanic bleeds in trouble is not waiting long enough for the funnel-side fluid column to settle before tapping the caliper for the second pull. A clean bleed needs the column to settle for at least a minute after the lever finger-stroke, longer if the bike's been ridden cold. Most bench timer apps work; a kitchen timer works too. The point is to wait for the air to migrate, not for the clock to reach a number that feels reasonable.

Whether the Premium Shimano kit is the right fit for your bike, or whether you need the Premium Road, Workshop Master, or a future M7-equipped option, we walk through in our compatibility guide: Which bleed kit fits Shimano R9300, Ultegra R8270, and SRAM Maven Bronze →