Improve brake-pedal consistency and full-droop hose clearance on a Rivian R1T or R1S with Mountain Pass Performance Ultra stainless-steel brake lines. Developed with HEL Performance, the kit uses stainless-steel braid, fittings, bolts, and application-specific brackets rather than limiting stainless construction to the internal braid.
Why upgrade?
- Reduces hose expansion under pressure for a firmer, more consistent pedal feel
- Designed to avoid strain at full suspension droop
- Vehicle-specific routing, brackets, and fittings
- Built to DOT guidelines
- Lifetime warranty
Construction
- Hydraulic hoses developed with HEL Performance
- Stainless-steel fittings and banjo bolts for corrosion resistance
- Application-specific components produced in the United States with Canadian and UK components
Kit contents
- Two front brake lines
- Two rear brake lines
- Four stainless-steel banjo bolts with crush washers
- Two mounting clamps
- Required brackets and hardware
Fitment and colors
Rivian R1T and R1S. Select Red, MPP Blue, Clear, or Carbon Fiber Look above.
Installation notes
Brake-line replacement requires opening the hydraulic system. Professional installation, correct routing and full-droop clearance verification, a complete brake-fluid flush, and leak inspection are required before driving. Recheck every connection after the initial heat cycle.