RS Series — Racing
RS-652 Endurance Sprint — TCR / GT / Motorhome
7 years of development. +8.7% friction vs PAGID RSL1. The new benchmark in endurance racing.
Technical Specifications
Formula Type
Low-Metallic (Steel Fiber + Aramid + Graphite-Carbon + SiC)
Friction vs PAGID RSL1
+8.7%
Friction vs Endless MA45B
+26.7%
Peak Temp Reduction (Steel)
−19.2% (828°C → 690°C after bed-in)
Peak Temp Reduction (CCM)
−14.6% (937°C → 817°C after bed-in)
Lock-Up Threshold
95 bpa (vs RS-635: 65 bpa, +46.1%)
Disc Compatibility
Steel + Carbon-Ceramic ✓
TCR / GT / Motorhome
Yes ✓
Born
April 2025 — 7 years R&D
About RS-652
RS-652 is BARBARO’s ultimate endurance racing compound — the result of 7 years of development and benchmarking against the world’s best. Born in April 2025, it surpasses PAGID RSL1 by 8.7% and Endless MA45B by 26.7% in average friction coefficient.
The formula integrates steel fiber, aramid, graphite-carbon, and silicon carbide for unmatched thermal stability. Its proprietary Transfer Film Technology deposits a 1–3 micron protective layer on the disc surface that continuously renews — a first for the platform.
After initial high-temperature carbonisation, the second thermal run shows a stabilised friction state with lower peak temperatures and higher consistent friction — directly addressing fade and initial-bite deviation common in endurance applications.
One of the very few endurance compounds fully validated on carbon-ceramic discs. On CCM surfaces, its friction coefficient increases with temperature — a unique safety advantage.
Benchmark Comparison
vs PAGID RSL1
+8.7% friction performance. RS-652’s second-run friction state is higher and more consistent. RSL1 is not CCM-compatible.
vs Endless MA45B
+26.7% friction performance. RS-652 outperforms MA45B on carbon-ceramic discs as well.
vs RS-635
+46.1% pedal margin (95 bpa vs 65 bpa lock-up). Transfer film technology. Carbon-ceramic disc compatible. −19.2% peak temperature reduction.
Key Features
🔥
Transfer Film Technology
1–3 micron protective layer on disc surface that continuously renews — protecting the disc while maintaining constant friction force.
🎯
+46.1% Pedal Margin
Lock-up threshold raised from 65 bpa (RS-635) to 95 bpa — more feel and control when trail-braking.
📊
Uniform Wear
Unlike competitors with hard surface layers followed by rapid deep wear, RS-652 maintains stable consumption throughout its full life.
🏁
Strong Cold/Hot Bite
Eliminates the bite variation between cold and hot operation — consistent from lap 1 to the finish.
🛡️
Disc-Friendly
Significantly reduced disc attack vs competing compounds. Extends disc service life.
⚡
Dual-Disc Compatible
Validated on both steel and carbon-ceramic discs. On CCM, friction increases with temperature.
Best For
- TCR class endurance racing
- GT class competition
- Motorhome racing categories
- Multi-hour endurance formats
- Carbon-ceramic disc race applications
Recommended Vehicles
- TCR-spec race cars
- GT class vehicles
- Motorhome class racers
- CCM-equipped race cars
⚠️
RS-652 is strictly for professional racing teams only. Not for street use. Racing involves inherent risks — see BARBARO disclaimer.
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