Halo P1 Racing Brake Fluid — One of the World's Highest Boiling Point Brake Fluids, with the absolute Lowest Compressibility.
When the brake pedal is the last thing standing between you and the wall, you don't gamble on fluid. Halo P1 is the fluid trusted by Formula 1, World Rally Championship, FIA World Endurance, and MotoGP teams — now available for your build.
Why drivers switch to Halo P1:
Built on the purest methyl borate ester base on the market, Halo P1 delivers a dry boiling point of 341°C / 646°F, the highest of any brake fluid available today. That means no vapor lock, no fade, no soft pedal when you're deep into a session and the calipers are glowing.
Halo P1's Fade Resistant Technology™ gives the fluid extremely low compressibility across the widest temperature range of any fluid in its class. The polar molecular structure means the fluid resists compression even under extreme heat, translating directly into a firmer, more consistent pedal from the first lap to the last.
Built different, on purpose:
Halo P1 goes through a proprietary multi-step purification process to strip out the impurities that quietly kill performance in lesser fluids. The result is exceptional thermal stability, high lubricity that protects ABS components and caliper seals, and a fluid that holds up lap after lap instead of degrading mid-session.
Each bottle ships in an alloy can rather than plastic, keeping moisture out and protecting the fluid's purity from the moment it's sealed to the moment you bleed your lines.
Backed by 45 years of brake fluid expertise:
Halo P1 is made by Orthene, the world's largest specialist brake fluid manufacturer — the same team behind the DOT4 320 and the world's first DOT 5.1 low-viscosity and EHV fluids. Brake fluid isn't a side project for them; it's the only thing they've made for over four decades.
Who it's for:
This is a race fluid, not recommended for street applications.
This fluid is also not compatible with Castrol SRF. The master cylinder seals and caliper seals need to be replaced if SRF has previously been used.
For those who have run SRF, Orthene now offers Halo GT, a dual-use fluid designed for both street and track, and is compatible with SRF.
