The Wilwood 120-12949-RD is a red, forged DynaPro Honda/Acura (DPHA) four-piston front caliper. It was designed for Honda and Acura models originally equipped with 262mm diameter rotors. These calipers bolt directly to the stock mounts on factory spindles. That direct-mount design avoids brackets and adapters, so this is a practical big-brake step up for a daily-driven Civic, Integra, or Fit that still needs to pass a street inspection.
Compared with a stock single-piston unit, the forged billet aluminum body and four stainless steel pistons are built to deliver firm clamping and even pad loading. The stainless alloy is also said to run cooler, which helps durability. The manufacturer notes that the caliper works with the OE master cylinder and ABS functions, so you upgrade the stopping hardware without reworking the hydraulic system. Buyers searching for a rebuild-free alternative to a sticking factory caliper will find this a straightforward option. Fitment depends on the exact year and submodel, so verify your vehicle against the manufacturer's application data before ordering.
The manufacturer states the caliper accepts the OE brake hose with a 10mm x 1.5 banjo bolt and works with the OE master cylinder while maintaining ABS function. The manufacturer's install sheet prefers steel adapter fittings with braided steel line if you upgrade the lines.
The manufacturer designed it as a direct bolt-on for Honda and Acura models originally equipped with 262mm rotors, mounting to the stock spindle bosses. Application lists vary between kits and model years, so confirm your year and submodel with the manufacturer before ordering.
Per the manufacturer's assembly instructions, this is a bolt-on job for a home mechanic with a torque wrench. Clean the caliper mount, then bolt the caliper to the axle hub bosses with washers, applying red Loctite 271 to the threads and torquing to 60 ft-lbs. Install the pads with the friction material facing the rotor and secure them with the pad clip retainer. Temporarily fit the wheel and confirm it turns freely with at least .080" clearance between wheel and caliper. Connect the OE hose using new crush washers and banjo bolts torqued to 17 ft-lbs, route lines clear of suspension and wheel components, and bleed the system afterward. Check wheel clearance before finalizing, since 15-inch wheel fitment varies.
