My impressions describe the change from the original discs of the R6 to the racing discs mentioned above. The discs are used together with the Braking P1 brake pads. So far I have driven them in Rijeka, at the Nürburgring and the Schweizer Dreieck.
By the way, the Epta is only built for racing use and have no road approval!
Differences to an original brake disc
Let’s have a look at the technical characteristics of the Eptas and their differences to an original brake disc:
The strength of the outer ring
R6 Original: 5,0 mm
Braking Epta: 5,5 mm indicated, I measured 5,7 mm
Advantage: Due to the considerably thicker outer ring, the heat generated during braking is better absorbed and distributed. Thus the brake remains stable even at high temperatures.
R6 Original: semi-floating round floaters
Braking Epta: fully floating T-Floater
Advantage: Fully floating floaters offer a much better centring of the outer ring in the brake calliper. The T-Floater design has the advantage of a larger contact surface and thus better power transmission between the inner and outer ring.
The alloy and material mixture
Braking relies here on a special steel alloy with very high friction properties and heat stability. This has been optimized for racing use and thus offers significantly better performance.
Perforation / Pattern
R6 Original: Round with perforation
Braking Epta: Wave with oblong holes
Advantage: The design of the Epta ensures better cooling and very good removal of the brake dust.
But how exactly is all this noticeable?
What is immediately noticeable is the significantly better deceleration with less effort. Also, the Epta offers much greater reserves than the original discs. Also, the disability improves and the input from the pump is implemented more precisely. The braking can be better controlled and if it gets tight you can still decelerate the little bit more.
Due to the lower effort, the right forearm stays more relaxed and you can refine your braking points. Also nice is that the feeling to the brake remains the same during the whole driving time. With the original discs, the pressure point has sometimes moved minimally. With the Epta this is a thing of the past.
Conclusion: expensive but worthwhile if you can use the advantages
Somehow this conclusion seems familiar to me… probably from my test of Braking P1 brake pads. Braking manages to deliver a top product again. This comes naturally to its price and one can say also with security that not every hobby racer can use these disks. But if you like the advantages of the discs and don’t mind the price, the investment is worth it.