Overview
Brake calipers are easily one of the most important elements of your build. When you're pushing through a fast corner or slowing down from a spirited on-ramp pull, your calipers are doing the work to clamp pressure, control friction, and keep you planted. So, when PRL set out to design a caliper, it wasn’t about just making something that worked. It was about creating something that belongs on a finely tuned Civic Si or Integra.
The braking system on the Civic Si and Acura Integra was never designed with serious performance driving in mind. The factory single-piston floating caliper gets the job done under light conditions — but once heat builds or pedal pressure increases, it shows its limits fast.
Designed With Performance in Mind
The design philosophy behind our new 4-Piston Brake Caliper Kit for the 10th and 11th generation Honda Civic centers on intelligent standardization. By utilizing a widely available 312x25mm rotor size—common across various applications including the 10th and 11th Generation civic Si—we ensure not only optimal braking performance but also maximize ease of maintenance and parts accessibility. This approach eliminates the need for proprietary rotors, helping source replacements more quickly and affordably.
Equally important, the caliper design accommodates the same brake pad profile used in the high-performance FK8 Civic Type R. This strategic decision leverages an existing performance-proven pad format while simplifying logistics for customers. Whether it's for daily driving, spirited weekend use, or track sessions, users benefit from a system engineered with both performance and practicality in mind—delivering OEM-level serviceability without compromise.
Tailored to the Right Fit
This caliper system will be available for:
- 2017–2021 Honda Civic Si (HC10)
- 2022+ Honda Civic Si (HC11)
- 2023+ Acura Integra (DE4)
Each setup is designed to work with the OEM 312mm rotor — the same size used on the 10th and 11th Gen Civic Si. Brackets and caliper geometry are carefully matched to ensure clean fitment and proper pad alignment. While this kit is optimized around the OEM rotor for now, a larger rotor solution is currently under development for drivers looking for even more braking surface.
A Glimpse at the Details
Here’s what you can expect:
- Forged 6061 aluminum body with an anodized finish — strong, lightweight, and built to last
- Dual-piston design (44mm primary / 41mm secondary) for smooth and even pad contact
- Estimated weight: 8.8 lbs per corner (including bracket and bolts)
- Pad compatibility: FMSI D1001 — used on the Type R, STI, CTS-V, Evo, and more
- Each kit includes premium stainless steel braided brake lines — no guesswork, no missing pieces
These calipers are more than just good-looking components. Their construction focuses on performance without sacrificing reliability. You’ll get a stiffer pedal, better modulation, and a refined response that feels right at home on a PRL-tuned build.
Built with Purpose
At PRL, everything starts with thoughtful design. From our intakes to intercoolers — and now calipers — the mission is always the same: build parts that perform and integrate seamlessly into the vehicles we focus on. These calipers represent that philosophy. They’re not overcomplicated. They’re not overdesigned. They’re just right for the job.
On the Horizon
Final testing and documentation are being completed, and we’re excited to share more soon — including detailed install content and full fitment breakdowns. If you’ve been building your Civic or Integra piece by piece, you won’t want to miss this one.
