KTM Motorex Brake Fluid 5.1 DOT 5.1 racing brake fluid 250ml — high wet-boiling, low-temperature viscosity

KTM Motorex Brake Fluid 5.1 (250ml) is a high-performance DOT 5.1 racing brake fluid engineered to deliver stable, responsive braking under extreme temperatures and heavy use.

This genuine KTM factory PowerParts accessory, formulated by Motorex (Oil of Switzerland), is built for riders who demand race-proven stopping power. The fluid combines an exceptionally high wet-boiling point, low cold-temperature viscosity and ABS compatibility to maintain pedal feel and prevent vapor lock when braking hard or in prolonged use.

How does this brake fluid improve braking performance?

This Motorex 5.1 formulation focuses on temperature stability and fast hydraulic response, so brakes remain powerful and predictable during aggressive riding or repeated heavy stops. It reduces the risk of gas bubbles forming in the system, preserving consistent pressure and lever/pedal feedback.

• Extremely high wet-boiling point above 180°C (356°F) for heat resistance
• Low viscosity at low temperatures for quicker initial response
• Racing-quality formulation developed to limit vapor formation

Is this fluid compatible with my ABS or modern braking system?

Yes—KTM Motorex Brake Fluid 5.1 is suitable for most ABS-equipped motorcycles and street bikes designed to use DOT 5.1 or DOT 4-rated fluids. Always check your motorcycle manufacturer’s manual for the correct DOT specification before changing fluids.

• Formulated for ABS and standard hydraulic brake systems
• Meets or exceeds common DOT 5.1 performance expectations
• Can be used where a high wet-boiling, low-viscosity fluid is specified

How long will one 250ml bottle last and how should I store it?

A 250ml bottle is ideal for servicing one motorcycle brake system or topping up during maintenance; larger bikes or full fluid changes may need more than one bottle. Keep the container sealed, stored upright in a cool, dry place away from moisture and direct sunlight to prevent contamination.

• 250ml bottle sized for single-system service or partial bleed
• Reseal tightly after use to avoid moisture absorption
• Store in a cool, dry environment away from heat sources

What maintenance benefits can I expect with Motorex 5.1?

Regular use of a high-quality brake fluid helps sustain braking consistency and reduces the likelihood of fade under heat. Motorex 5.1’s balance of boiling resistance and cold-weather flow supports reliable braking across varied riding conditions.

• Helps maintain pedal/lever feel during aggressive use
• Limits vapor-lock risk during prolonged heavy braking
• Assists in preserving system performance in cold starts

Who is this for? Riders and mechanics who demand race-grade braking chemistry: track-day enthusiasts, off-road competitors, and street riders who require high-temperature stability and quick response. This KTM-branded Motorex formulation is aimed at anyone replacing or topping up brake fluid on motorcycles that call for DOT 5.1 (or compatible DOT 4 where higher performance is desired), and for teams seeking a compact 250ml service bottle for pit or garage use.