Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Brakes› Brake Systems And Components

AP Racing

4-Piston Brake Caliper

Name: 4-Piston Brake Caliper
Brand: AP Racing
SKU: CP8350-12S4

$856.13

SKU: CP8350-12S4

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The AP Racing CP8350-12S4 is a 4-piston brake caliper designed for R2 Rally and similar series applications. It features a lightweight forged aluminum alloy construction with aluminum alloy pistons. The caliper is designed for radial mounting with 152mm x 39.8mm centers and can accommodate discs ranging from 285mm to 310mm in diameter with a 26mm thickness.

Show original supplier description

The AP Racing CP8350-12S4 is a 4-piston brake caliper engineered for the demands of rally racing, specifically suited for R2 Rally or similar series. Constructed from lightweight forged aluminum alloy, this caliper houses aluminum alloy pistons and is fitted with high-temperature, low-drag seals as standard. It is designed with integrated bleedscrew and pipe protection, alongside stainless steel pad abutments and wear plates to ensure durability and performance under harsh conditions. This caliper is compatible with discs measuring Ø285 or Ø310mm in diameter and 26mm in thickness. It features a radial mount with 152 x 39.8mm centers, and accommodates piston bores of 2 x 38.1 mm and 2 x 41.3 mm. The product is also noted for its relatively low weight of 2.08 Kg.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

Brand	AP Racing
Part Number	CP8350-12S4
Category	Brakes

Videos

All about Subaru Brake upgrades from Brembo, Alcon, and AP Racing

AP Racing by Essex Brake Kit Buyer's Guide: Corvette C5 & C6

Brake Tech and Interviews | AP Racing Essex | SE0203

Essex Designed AP Racing Competition Brake Kits: Part I

How to identify genuine AP Racing Brake Calipers

Track Prep! - Essex Racing Sprint Big Brake Kit Installation (Subaru BRZ/Scion FR-S/Toyota 86)

We Got Bigger Brakes!!! AP Racing 4 Pots vs Radi-cals!

5,000+ Trusted brands

1M+ Enthusiasts

5M+ Parts sold

(760) 282-4645 hello@motormia.co

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy