INDEPENDENT LAB TESTING · ASTM STANDARDS
NOT ALL BRAKE KITS ARE EQUAL
THE DATA PROVES IT
Ohio Performance Solutions partnered with Frenkit Performance because independent testing revealed a performance gap that simply can't be ignored.
3×
LONGER CYCLIC FATIGUE LIFE
300°C
DUST BOOT THERMAL LIMIT
100%
TEST CATEGORIES PASSED
ASTM
INTERNATIONALLY CERTIFIED TESTING
FRENKIT PERFORMANCE — THE ONLY KIT TO PASS EVERY SINGLE TEST CATEGORY
THE RESEARCH
BUILT ON SCIENCE, PROVEN IN THE LAB
Frenkit S.L., based in Navarra, Spain, conducted a rigorous independent comparison of their Performance brake rebuild kits against leading competitors available on the market. Testing was performed to ASTM international standards which are the same standards used in OEM brake development.
The verdict was clear: Frenkit Performance was the only kit to pass every test category. Some competitors fell short in one or two areas. Others failed significantly. The data below is the reason we at Ohio Performance Solutions are proud to be North America's exclusive partner and distributor of the Frenkit Performance line.
TESTS PERFORMED
ASTM D395 Compression Set which measures rubber's ability to maintain sealing pressure at extreme temperatures (150°C and 200°C)
ASTM D471 Brake Fluid Resistance = Volume and hardness change after 70 hours of immersion at 200°C
AS7220TM D573 High-Temp Air Aging = Material degradation after 24 hours at 200°C and 2 hours at 300°C
FRENKIT NORM Cyclic Fatigue Test = real world caliper cycling at 230°C / 80 bar pressure until failure
CALIPER SEAL TESTING — ASTM D395 / D471 / D573
THE CALIPER SEAL RESULTS
Every seal was tested under identical conditions against strict pass/fail limits.
Only one kit passed them all.
How to read this table: Lower compression set % = better sealing retention. Hardness and volume change closer to 0 = better brake fluid compatibility. The "Limit" row shows the maximum acceptable values; any result beyond this limit indicates a product is not suitable for performance applications.
Testing conducted by Frenkit S.L. R&D Department, March 2026. All tests performed to ASTM international standards under controlled laboratory conditions.
5×
ONE KIT CATASTROPHICALLY FAILED
One popular kit on the market recorded a compression set of 68.4% at 200° more than double the 30% maximum acceptable limit and a brake fluid volume change of 14%, well beyond the 0–10% safe range. A seal that swells beyond tolerance in brake fluid is a seal that can't guarantee consistent pedal feel or predictable braking. Under track conditions, that's a safety risk.
Best
ENGINEERED SPECIFICALLY FOR BRAKE FLUID
Frenkit Performance seals recorded the best compression set, best brake fluid resistance, and best air aging scores across every category. The formula wasn't adapted from a general-purpose rubber — it was engineered from the ground up for sustained contact with high-temperature brake fluid under race conditions. That purpose-built precision shows in every test result.
DUST BOOT TESTING — ASTM D573 · 300°C · 2 HOURS
THE DUST BOOT THAT SURVIVES WHAT OTHERS CAN'T
Not all dust boots are made from the same material and that difference becomes critical when brake temperatures climb.
FRENKIT PERFORMANCE
PEROXIDE-CURED SILICONE
-
Rated to operate between −60°C and +200°C continuously
-
Withstands temperature spikes up to 300°C+
-
Passed full 2-hour test at 300°C: no cracks, no tackiness, full flexibility retained
-
Returns to original shape under high-tension bending
-
Highest tear resistance of all silicone boots tested
300°C / 2 HOUR TEST RESULT
PASSED. Hardness within spec. Not tacky. No cracks. Returns to shape under high manual tension. Full structural integrity maintained throughout.
EPDM-BASED COMPETITORS
SULFUR-CURED EPDM
-
Maximum operating limit of 160°C–180°C
-
Temperature spikes above 200°C cause irreversible damage
-
Failed the 2-hour test at 300°C. Had to be removed early due to heavy smoke emission
-
Complete thermal degradation. Crumbled to the touch after test
-
Total loss of hardness, surface integrity, and flexibility
300°C / 2 HOUR TEST RESULT
FAILED. Prematurely removed due to heavy smoke emission. Complete thermal degradation. Crumbled to the touch. Total loss of all mechanical properties.
Even among the silicone competitors, Frenkit Performance boots demonstrated the highest tear resistance and best performance under extreme stress.
The benchmark was set and Frenkit Performance set it.
Before testing (Frenkit Performance on right)
Additional Competitors at 300ºC at 2 hours no manipulation
Frenkit Vs Competitors after 300ºC at 2 hours test. (Frenkit Performance on right)
2 hours at 250ºC Frenkit Performance vs Competitors
2 hours at 300ºC Frenkit Performance vs Competitors
OHIO PERFORMANCE SOLUTIONS
WHY WE CHOOSE TO CARRY
FRENKIT PERFORMANCE
We researched the market before we made a commitment. When we saw the test data and met the Employees of Frenkit Performance who were as passionate about the motorsport community as us, the decision was straightforward.
275+
EMPLOYEES
A dedicated manufacturing workforce with decades of brake component expertise in Navarra, Spain.
100M+
PIECES/YEAR
Combined manufacturing and kitting capacity that ensures consistent quality at scale.
IATF
16949 CERTIFIED
The highest-level quality standard in the automotive industry — the same certification required by OEM suppliers.
ISO
9001:2015 CERTIFIED
International quality management certification ensuring every process meets the highest standards of consistency and reliability.
1st
IN NORTH AMERICA
Ohio Performance Solutions is proud to be the first to bring Frenkit Performance brake rebuild kits to the North American motorsport market.