Hydraulic Disc Brake Bleed Kit – Mineral Oil & DOT 5.1 MTB

Universal Bicycle Hydraulic Disc Brake Bleed Kit

Keep your mountain bike, road bike, or e-bike stopping with factory-crisp confidence. This all-in-one brake bleed kit includes both 60ml Mineral Oil and 60ml DOT 5.1 fluid, plus every tool you need for a clean, professional-quality brake fluid service at home — no need for separate purchases or multiple kits.

Why Choose This Bleed Kit?

• Complete All-in-One Set: Includes both brake fluid types (Mineral Oil & DOT 5.1), a 20ml syringe, transparent funnel, flexible hoses, and brass & plastic adapters — everything in one package.
• Wide Brand Compatibility: The Red Bottle (Mineral Oil) is designed for Shimano, Magura, Tektro, and NUT brake systems. The Yellow Bottle (DOT 5.1) is formulated for SRAM, AVID, Formula, and Hayes brake systems.
• Corrosion-Resistant Construction: Syringe, funnel, and hoses are built from thickened, high-quality plastics engineered to withstand the corrosive properties of DOT fluids and mineral oils — no cracking, clouding, or degrading over time.
• Easy Air Bubble Monitoring: The transparent funnel and hose let you watch and eliminate trapped air bubbles in real time, helping restore firm, responsive brake lever feel in minutes.
• Suits All Skill Levels: Designed for both professional bike mechanics and confident DIY cyclists who want a reliable, reusable tool set for ongoing maintenance.

What's in the Box

• 60ml Mineral Oil (Red Bottle) — for Shimano, Magura, Tektro, NUT
• 60ml DOT 5.1 Fluid (Yellow Bottle) — for SRAM, AVID, Formula, Hayes
• 20ml Syringe
• Transparent Bleed Funnel
• Flexible Hoses
• Brass & Plastic Adapters

Specifications

⚠️ Important Safety Note: Mineral Oil and DOT fluid have entirely different chemical compositions and must never be mixed. Using the wrong fluid will permanently damage your brake system's internal seals. Always check the specific fluid type printed on your brake lever reservoir cap before beginning any maintenance.

For general bicycle maintenance guidance, visit the U.S. Consumer Product Safety Commission – Bike Safety resource.

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Learn more: Bicycle brake

Frequently Asked Questions

Q: Is this hydraulic disc brake bleed kit compatible with Shimano brakes?

A: Yes! The included 60ml Red Bottle Mineral Oil is specifically compatible with Shimano hydraulic disc brake systems, as well as Magura, Tektro, and NUT systems. Always confirm the fluid type shown on your brake lever reservoir cap before starting.

Q: Can I use the same syringe for both Mineral Oil and DOT 5.1 fluid?

A: It is strongly recommended to keep separate tools for each fluid type. Mineral Oil and DOT 5.1 are chemically incompatible — even trace cross-contamination can damage brake seals. This kit's tools are corrosion-resistant and reusable, so consider labelling them clearly by fluid type.

Q: Is this bleed kit suitable for a beginner doing their first DIY brake service?

A: Absolutely. The transparent funnel and hose make it easy to visually track air bubbles during the bleeding process, giving beginners a clear view of what's happening. The kit includes all necessary components so you won't need to source any additional tools for a standard brake bleed on MTB or road bikes.

Q: What is the difference between Mineral Oil and DOT 5.1 fluid?

A: Mineral Oil (used by Shimano, Magura, etc.) is a petroleum-based fluid that is gentler on seals and paintwork. DOT 5.1 (used by SRAM, AVID, Formula, Hayes) is a glycol-based fluid with a high boiling point for performance under heavy braking. They must never be mixed or used interchangeably — always refer to your brake manufacturer's specifications.