27WON's Bolt-On Four-Piston Caliper Swap Fits the 1.5T Civic and the Integra Without Bigger Rotors

Not every Civic needs a 14-inch big brake kit. Most just need a better caliper. That is the idea behind 27WON's new four-piston front caliper upgrade, which PASMAG reported on September 23 is available now for the turbocharged 1.5-liter 2016 to 2021 10th-gen Civic, the 2022-and-newer 11th-gen Civic and the 2023-and-newer Acura Integra Base and A-Spec.

The kit replaces the factory floating front calipers with fixed four-piston calipers that use opposing pistons to clamp the pad from both sides of the rotor. It keeps the factory-size front rotors and the factory brake lines, which keeps the install simple and the cost of ownership low.

What changes

27WON claims more even pad pressure and improved brake response and modulation, and the setup is nearly six pounds lighter than the factory calipers. Lighter calipers mean less unsprung weight at each front corner, which helps the suspension keep the tire in contact with the road.

The kit includes two anodized fixed four-piston calipers, 27WON Blue Sport Street front pads, caliper mounting brackets and hardware. Finishes are Sunset Orange, Metallic Crimson and Stealth Black. The pads are aimed at street and spirited driving, and because this caliper uses a different pad shape from 27WON's big brake kits, replacement and alternative pads are sold specifically for it.

Who it is for

This is the right upgrade for the daily-driven Si or Integra that sees canyon roads and the occasional autocross. Keeping the factory rotor size means it works with the factory wheels, including small-diameter winter or track wheels that will not clear a big kit. For drivers who need more heat capacity for repeated hard stops on a road course, 27WON points to its complete big brake kits, with 330 mm by 28 mm two-piece rotors, forged four-piston calipers and stainless lines.

Pricing was not included in PASMAG's report. 27WON details the kit on its own site.