Frenkit Advantage
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.
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, 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.
IATF 16949 • ISO 9001:2015 • ASTM Tested
Tests Performed
- ASTM D395: Compression Set measures rubber's ability to maintain sealing pressure at extreme temperatures (150°C and 200°C)
- ASTM D471: Brake Fluid Resistance measures volume and hardness change after 70 hours of immersion at 200°C
- ASTM D573: High Temp Air Aging measures material degradation after 24 hours at 200°C and 2 hours at 300°C
- Frenkit Norm: Cyclic Fatigue Test is 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.
⚠ One Kit Catastrophically Failed
One popular kit on the market recorded a compression set of 68.4% at 200°C, more than double the 30% maximum acceptable limit, with a brake fluid volume change of 14%, well beyond the 0 to 10% safe range. A seal that swells beyond tolerance in brake fluid cannot guarantee consistent pedal feel or predictable braking. Under track conditions, that's a safety risk.
✓ 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.
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. That difference becomes critical when brake temperatures climb.
- Rated 60°C to +200°C continuously
- Withstands spikes up to 300°C+
- Passed full 2 hour test at 300°C with no cracks and full flexibility retained
- Returns to original shape under high tension bending
- Highest tear resistance of all silicone boots tested
300°C / 2 Hour Result: PASSED ✓
Hardness within spec. Not tacky. No cracks. Full structural integrity maintained.
- Maximum operating limit of 160°C to 180°C
- Irreversible damage above 200°C
- Failed 2 hour test at 300°C. Removed early due to heavy smoke
- Complete thermal degradation. Crumbled to the touch
- Total loss of hardness, surface integrity, and flexibility
300°C / 2 Hour Result: FAILED ✗
Prematurely removed due to heavy smoke emission. Total loss of all mechanical properties.
Before testing (Frenkit Performance on right)
Frenkit vs Competitors after 300°C / 2 hours (Frenkit on right)
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.
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