RCM / Alcon 4-Pot Rear Motorsports Brake Kit 343mm (04+ STI)

RCM / Alcon 4-Pot Rear Motorsports Brake Kit — 343mm (04+ STI)

Give your Subaru STI's rear end the same motorsport-grade hardware that has earned Roger Clark Motorsports its reputation on the track. This RCM Alcon rear brake kit pairs 4-piston Alcon calipers with 343mm 2-piece vented and slotted rotors for a direct-fit rear brake upgrade built for serious drivers across Canada and the U.S.

Features & Benefits

• Genuine RCM × Alcon Collaboration — A rear motorsports brake kit engineered jointly by Roger Clark Motorsports and Alcon, bringing proven track-derived components to your STI.
• 4-Piston Alcon Rear Calipers — Purpose-built rear calipers designed for consistent clamping and precise pedal modulation, whether you're at the autocross or carving up backroads.
• 343mm 2-Piece Vented & Slotted Rotors — Lightweight 2-piece rotor construction paired with vented and slotted faces for reliable heat management and consistent stopping feel, session after session.
• Vehicle-Specific Fitment — Available in two kit configurations to match your chassis:
  • RCM2960 — 2004–2007 Subaru STI
  • RCM2837 — 2008+ Subaru STI
• Direct Bolt-On Upgrade Path — A rear-specific big brake solution that improves rear brake balance without the cost of a full front-and-rear BBK.
• Track-to-Street Versatility — Built to handle track days and spirited driving while remaining suitable for everyday road use.

Please confirm wheel and vehicle fitment before purchase. Rotor and caliper clearance can vary by wheel setup. If you have questions about compatibility with your 2004+ STI, contact our team before ordering.

Upgrade Your Rear Brakes the Right Way

The RCM Alcon rear brake kit brings genuine motorsport engineering to your Subaru STI's rear axle. Reach out to AFR Autoworks to confirm your fitment and get your STI ready for its next track day or drive.