Tag: RSR Brakes

We’re racing this weekend at the TT Assen circuit, with HARC and the Historic GT Touring Car Championships. Two TwinSpark cars are on track: our Viper Green 3.0 RSR and the Light Yellow 2.8 RSR we call Woodstock.

Damaged in a minor off at Spa last month, Woodstock has now been repaired. The widebody Porsche 911 is running brand new slicks and a little something extra: the first set of Zuffenhaus RSR brakes to enter Europe.

Fitted with Pagid Blue brake pads, the RSR brakes work well. TwinSpark partner and former Porsche Cup series driver Lex Proper will race the car in this configuration, and we’ll give a full report on his findings after the event.

Bolting the calipers onto Woodstock was [...]

We recently visited the US test facility responsible for batch testing of our exclusive Zuffenhaus 911 RSR brake calipers.

First impressions of the operation were excellent. This is a first class facility with state of the art testing capability.  It was interesting to note that, not only do most of the 200+ mph NASCAR teams make use of this capability, some of the leading brake system manufacturers test here too.

For example, every road and race pad compound from one highly respected brake manufacturer is tested there before they are released for production (not sure how sensitive this information is so no names, no pack drill). The type of data captured in testing includes torque, clamping force, temperature recovery time, master cylinder piston travel and hydraulic pressure.  This data is then graphically represented and the charts compared [...]

The first working set of Zuffenhaus RSR brakes have arrived at TwinSpark Racing from the USA. It’s been a long wait, but the finished product looks amazing – hopefully our customers will feel they’ve been worth hanging on for. Here’s some pics of a caliper half post-anodising.

The idea behind these brake calipers was to build a set of RSR-style brakes that could fit as the originals, but use all still-available 911 Turbo/930 seals and service parts. The development has been riddled with challenges, but Zuffenhaus have finally brought all of the elements together and produced a remarkable and beautiful brake kit for the Porsche 911.

We have a sizable investment in this project; both financial and in our reputation. The [...]