Part Number: PRL.1002.BLU (Blue Calipers) / PRL.1002.1.GRY (Gray Calipers)

Description: PRL 4 Piston Brake Caliper Kit

Notes: Does not include Rotors

Details:

Our new 4-Piston Brake Caliper Kit for the 10th and 11th Gen Honda Civic Si is built around smart standardization. It uses a widely available 312x25mm rotor—common on the Civic Si and other models—for strong performance, easy maintenance, and affordable, off-the-shelf replacements. Equally important, the calipers also fit the same brake pad profile as the FK8 Civic Type R, a proven, high-performance pad that simplifies sourcing and availability.

Unlike the stock single-piston setup on the Civic Si and Acura Integra—designed for light-duty use—this caliper kit is made for serious driving. It delivers consistent performance under heat and pressure, with OEM-level serviceability and no compromises.

Built in-house and thoroughly tested, this kit provides a significant improvement in clamping force, thermal control, and pad consistency over the factory single-piston floating design. With a forged aluminum 2-piece caliper body, vented hard anodized pistons, and CNC-machined steel brackets, this is a complete, direct-fit package for customers looking for confident stopping performance under real-world street and track conditions.

Each component was developed to address common issues in OEM setups — from uneven pad wear to brake fade under extended heat cycles. The result is a well-balanced, application-specific system that blends OEM-level integration with race-derived performance. For a touch of style, Calipers are available in SatinBlue or Gunmetal Gray anodized finishes, so drivers can pick what color matches their build.

Each kit includes a pair of PRL 4-piston calipers, model-specific mounting brackets, and stainless steel braided brake lines tailored for the application. These lines are critical for maintaining consistent brake pressure and pedal feel under high-performance conditions. Also included is a complete hardware pack with bridge bolts, banjo bolts, crush washers, bleeder caps, and security cotter pins. To assist with wheel clearance verification, a 1:1 scale printable fitment template is provided for installer reference.

Quick Specs:

• Caliper Body: Forged 6061-T6 aluminum, 2-piece with a hard anodized finish

• Pistons: 6061-T6 Billet Aluminum with Type 3 Hard Anodizing Vented Caliper Pistons 

• Bracket: Billet 4140 steel, electrocoated for corrosion resistance

• Brake Line Kit: Stainless steel braided lines included (Honda-specific fitment)

• Pad Compatibility: FMSI D1001 (F50 / Type R / STI spec)

• Rotor Compatibility: OEM 312mm rotor (Honda Civic Si / Integra factory size)

• Weight: 7.2 lbs caliper + 1.6 lbs bracket & hardware = 8.8 lbs total

• Hardware: Grade 12.9 plated fasteners, crush washers, bridge bolts, stainless bleeders and pins

Fitments:

• 2017–2021 Honda Civic Si (HC10)

• 2022+ Honda Civic Si (HC11)

• 2018+ Honda Accord

• 2023+ Acura Integra (DE4)

• Many other Honda models when using the 312mm Si rotor

This kit is designed to work directly with the factory rotor and knuckle layout, requiring no hub or bracket modification. All hardware and lines are vehicle-specific, streamlining the install process for your techs or end-users.

Note: Due to dimensional increases over OEM (25mm outward width, 60mm overall height), we strongly recommend using the included 1:1 printable template to verify clearance with aftermarket or tight-tolerance wheels.