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2018 Subaru WRX STI All Models ( Click To Change )
AP Racing Competition Front Brake Kit (CP8350/325mm) - Subaru WRX/STI
Fitment: Front

Essex Designed AP Racing Competition Brake Kit (Front CP8350/325mm) - Subaru WRX/STI

  • Features AP Racing CP8350 four piston calipers - Learn More Here
  • 325x32mm, 72 vane AP Racing disc - Learn More Here
  • Drilled for both 5x114.3 and 5x100mm hubs
  • Saves 14 unsprung lbs. from nose vs. OEM brakes
  • Fits OEM BBS wheels without a spacer
  • Every component designed to resist the heat of extended track sessions
  • Pistons sized properly to allow for seamless integration with OEM master cylinder and ABS system
  • Designed to work with OEM rear brakes

Whats in the box?

  • One pair AP Racing CP8350 racing calipers
  • One pair 325x32mm AP Racing CP3908, 70 vane, J Hook racing discs, with fully floating 6061 hard anodized aluminum hats, and attachment hardware
  • One pair caliper mounting brackets and hardware
  • One pair Spiegler Stainless Steel Brake Lines with abrasion resistant coating
  • Detailed installation instructions
  • Brake pads are¬†NOT¬†included with our system. Racing brake pads are a highly personal choice. Many manufacturers include a set of inexpensive, low quality pads with their brake kits. Rather than artificially inflating the price of our system with a set of pads you probably don't want anyway, we've decided to remove the cost from our system and allow our customers to choose the pads that best suit their needs/wants. When purchasing our kit, you are able to choose one set of front pads at a substantial discount vs. the retail price.

Advantages Over OEM Brake System

  • Approximately 14 lbs. of unsprung weight reduction from the nose of the car
  • AP Racing calipers are the stiffest, lightest, and most technologically advanced calipers available at any price
  • CP8350 calipers use a 20mm thick, commonly available brake pad shape
  • Stainless steel pistons keep heat out of the brake fluid and provide an ultra-firm pedal
  • Mitigation of pad knockback via anti-knockback springs behind the caliper pistons
  • Anodized caliper finish that is resistant to wear and deterioration at elevated temperatures
  • Stainless steel caliper hardware for a long caliper service life under frequent pad change conditions
  • High temperature, low drag seals that will hold up to track temps= less rebuilding and longer service life
  • No dust boots to burn up
  • Simple pad change with one bolt, no caliper removal required
  • Lifetime professional caliper rebuilding support by Essex (at a fee)- pull off your calipers, send them to us, we clean, inspect, and rebuild them
  • Available disc burnishing service ensures that your kit arrives ready to be installed and driven hard immediately
  • Championship winning, 70 vane, fully floating, AP Racing J Hook racing discs with 10 attachment points to hat
  • Anti-knockback/anti-rattle disc attachment hardware
  • Replacement iron disc rings available at an extremely competitive replacement price
  • Disc metallurgy specifically designed to handle the temps typically seen on track offer a long service life
  • Highest quality, Spiegler stainless steel brake line with clear sheath that reduces compliance over OEM rubber design

Wheel Fitment & Installation

Complete Kit Installation Instructions
Caliper Installation Drawing
Disc Installation Drawing
Iron Ring Replacement Assembly Instructions
Wheel Fitment Template

Confirmed wheels that fit without a spacer:

  • OEM BBW WRX STI front