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- R-Line 6-piston off-road race caliper (part no: R6IS).
- Designed specifically for heavy duty off-road race use.
- Standard air-cooled design.
- All internal fluid crossovers.
- Recessed bleed screws protected from stone impacts.
- Heavy duty stainless steel pad abutments.
- Castellated stainless steel pistons.
- Stainless steel pad rails fitted to caliper bridge.
- All stainless steel hardware for corrosion resistance.
- Anti-knockback springs fitted behind all pistons.
- Type-3 hard anodize finish for maximum durability.
- Optimised wheel clearance for use with 16” race wheels.
Frequently Asked Questions:
Why should you choose Powerbrake R-Line off road race calipers?
Powerbrake’s R-Line 6-piston off road race calipers have a championship-winning heritage dating back to the launch of our 1st generation R-Line calipers in 2009. During the decade following their launch, our 1st generation R-Line race calipers won multiple National Off-road Championships, won two FIA Cross Country World Championships, finished on the podium at the infamous Dakar Rally six times and won the Dakar Rally overall in their final year of service in January 2019. Our current 2nd generation R-Line calipers were launched in September 2019 and won the first FIA Cross Country World Championships race that they were used in (Rally Morocco) in October 2019. The calipers then went on to finish the 2020 Dakar Rally in a very close 2nd place in the overall standings. Our R-Line off road race calipers offer an unbeatable combination of performance, durability and reliability all at a competitive price point.
What pad profile are Powerbrake R-Line calipers designed around?
Powerbrake R-Line off road race calipers (both air and liquid-cooled variants) are designed around a common 6-piston race pad profile that is readily available in a wide range of race pad compounds from all of the world’s leading race pad manufacturers. In addition to this we offer a comprehensive line of Powerbrake branded race pads that are manufactured for us by one the very best (if not the best) race pad manufacturer on the planet. After decades of testing race pad compounds both on-car and using state-of-the-art brake dyno’s, we believe that the specific race pad compounds that we have selected to include in our range are the best off-road race pads currently available on the world market.
What is the max disc size that can be used with Powerbrake R-Line calipers?
Powerbrake R-Line race calipers (both air and liquid-cooled) are designed to be used with 320x33mm discs. Be sure to have a look at our R-Line race disc. An advanced 68-vane, directional disc specifically designed for off road race applications. We can also quote on supplying complete 2-piece disc assemblies (including billet aluminum hats and mounting hardware – all manufactured in-house in our factory) manufactured to customer specifications.
Are there different options in the R-Line caliper range?
We offer two different R-Line off road race calipers. Our standard (air-cooled) 6-piston R-Line caliper (part no: R6IS) and our advanced (liquid-cooled) 6-piston R-Line caliper (part no: R6ISW). Both calipers share most design elements and features and both are designed around the same pad profile. The liquid-cooled caliper allows for liquid to be circulated through the caliper body using a separate circuit, away from the brake fluid. The liquid then circulates through a cooler and then back to the caliper in a closed circuit. The liquid-cooled caliper also accepts an M8x1mm temperature sensor that can be used to provide temp data back to a management system. We generally supply our standard R6IS calipers for lighter race cars or mid-pack FIA T1 class cars. Our liquid-cooled R6ISW calipers are typically supplied to leading FIA T1 teams and Dakar Rally teams.