Wilwood FNSL4R 12.88in Rear Kit Drilled / Slotted Black - 2008-2014 Subaru WRX
Wilwood FNSL4R 12.88in Rear Kit Drilled / Slotted Black - 2008-2014 Subaru WRX
Wilwood
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Every product is sourced from authorized manufacturers or distributors. If something isn’t right with fitment or condition, we’ll work with you to resolve it fairly.
NO GUESSWORK,
JUST PARTS THAT WORK.
Let’s finish that car.
PRODUCT DETAILS
RallySport Direct now carries a great selection of quality braking upgrades and accessories brought to you by Wilwood.
On this page, you are looking at the Wilwood Forged Narrow Superlite 4R Big Brake Kit. This kit is a big brake conversion for the rear of your vehicle that includes larger rear calipers, rotors, and all of the required hardware to make this kit ready for the installation. Wilwood has engineered this kit to increase the braking capacity of your vehicle under high-performance driving conditions with full compatibility with your OE master cylinder and ABS functions.
Here are the detailed features of the following included components.
CALIPERS:
- Forged Narrow Superlite 4R
- Black powder-coated finish
- 4 piston design
- Piston area: 1.98 in2
- Stainless steel pistons
- Radial-mount type
ROTORS:
- SRP Drilled rotor
- SRP Drilled and slotted style
- Iron material
- 12.88" outside diameter
- 0.81" rotor width
- 48 CV vane count
- Black electro-coat surface finish
ROTOR HATS:
- Parking brake hat standard type
- Iron construction
- Black E-coat finish
- 1.5" hat offset
INCLUDES:
- Stainless brake lines
- BP-10 pads
- Mounts
- All required hardware
REAR LOCATION
RETAINS FULL USE OF THE OE PARKING BRAKE
WHY WE CARRY THIS
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
- Fitment-first mindset — no “universal” roulette
- Brand reputation matters — we favor proven manufacturing
- Support that actually responds with real answers
WHAT TO EXPECT
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
TRUST, BUILT INTO THE PROCESS.
Anyone can list parts. We curate what belongs on a serious build. Our goal is simple: fewer surprises, cleaner installs, and confidence when you hit “Buy.”
Fitment checked
We prioritize vehicle-specific listings and clear selection logic so you’re not gambling on compatibility.
Brand discipline
Proven manufacturing and consistent quality matter more than hype. We bias toward what actually holds up.
Real support
If you have a question, you’ll get a human answer that helps you finish the build — not a copy-paste shrug.
RallySport Direct now carries a great selection of quality braking upgrades and accessories brought to you by Wilwood.
On this page, you are looking at the Wilwood Forged Narrow Superlite 4R Big Brake Kit. This kit is a big brake conversion for the rear of your vehicle that includes larger rear calipers, rotors, and all of the required hardware to make this kit ready for the installation. Wilwood has engineered this kit to increase the braking capacity of your vehicle under high-performance driving conditions with full compatibility with your OE master cylinder and ABS functions.
Here are the detailed features of the following included components.
CALIPERS:
- Forged Narrow Superlite 4R
- Black powder-coated finish
- 4 piston design
- Piston area: 1.98 in2
- Stainless steel pistons
- Radial-mount type
ROTORS:
- SRP Drilled rotor
- SRP Drilled and slotted style
- Iron material
- 12.88" outside diameter
- 0.81" rotor width
- 48 CV vane count
- Black electro-coat surface finish
ROTOR HATS:
- Parking brake hat standard type
- Iron construction
- Black E-coat finish
- 1.5" hat offset
INCLUDES:
- Stainless brake lines
- BP-10 pads
- Mounts
- All required hardware
REAR LOCATION
RETAINS FULL USE OF THE OE PARKING BRAKE
