Project Mu FS2A 2POT Rear BBK 316x20mm for 2013+ FRS/BRZ/86 2022+ BRZ/GR86
Regular price
$2,595.00
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OVERVIEW
Strengthen rear stopping capability and optimize brake bias with the Project Mu 2POT FS2A Forged Rear Caliper Kit for 2013+ GR86 / BRZ / 86 / FR-S (ZN6/ZC6/ZN8/ZD8). Engineered as a high-performance rear-dedicated system, the FS2A features a compact forged aluminum 2-piston caliper housing oversized 41mm pistons. By matching piston displacement to balance with high-output front BBKs, the FS2A delivers consistent rear stability, precise pedal feel, and reduced unsprung weight. Paired with lightweight 316mm x 20mm 1-piece straight 8-slit rotors, this kit is an ideal rear upgrade for street, drift, and light track setups.
| Caliper Feature / Spec | SCR-PRO Rear Rotor Upgrade | FS2A Rear 2POT | FS44R Rear 4POT | FS44R Large Rear 4POT |
|---|---|---|---|---|
| Axle Position | Rear Axle Specific | Rear Axle Specific | Rear Axle Specific | Rear Axle Specific |
| Caliper Type / Architecture | Factory Single-Piston Rear Caliper | Compact Rear 2POT Forged Body | Balanced Rear 4POT Forged Body | Large Rear 4POT Forged Body |
| Piston / Pad Architecture | 1-Piston x 1-Pad per side (OEM) | 41mm Pistons x 2 (2-Pads per Caliper) | 4-Pistons x 4-Pads (1 Pad / Piston) | 4-Pistons x 4-Pads (1 Pad / Piston) |
| Rotor Spec / Design | 290mm x 18mm (2-Piece Direct Replacement) | 316mm x 20mm (1-Piece Straight 8-Slit) | 345mm x 32mm (2-Piece Straight 8-Slit) | 355mm x 32mm (2-Piece Straight 8-Slit) |
| Target Application | OEM Replacement / Street Performance | Street, Drift & Light Track Rear Upgrade | Heavy-Duty Trackday & Circuit Rear Upgrade | Maximum Thermal Capacity Circuit Setup |
FEATURES
- Dedicated Rear 2-Piston Architecture: Specifically valved with 41mm pistons to optimize hydraulic brake bias and rear axle stability under hard braking.
- Forged Aluminum Alloy Construction: Compact forged aluminum caliper body minimizes un-sprung mass while offering high body rigidity.
- 316mm x 20mm 1-Piece Rotors: Lightweight 1-piece vented rotors increase overall heat dissipation surface area compared to stock rear brakes.
- Straight 8-Slit Rotor Venting: 8-slit face design continuously wipes pad friction surfaces and vents out boundary friction gases.
- Dust Seal Barrier Structure: Incorporates dedicated outer dust seals ahead of the inner pressure oil seals to prevent grit, brake dust, and debris from contaminating internal hydraulics.
WHAT IS INCLUDED
- 2x Project Mu FS2A Forged 2-Piston Rear Calipers (Signature Teal Finish)
- 2x Project Mu 316mm x 20mm 1-Piece Rear Brake Rotors (Straight 8-Slit)
- 4x Project Mu Performance Rear Brake Pads (2 Pads per Caliper - Standard NS-C Compound)
- 2x CNC Machined Aluminum Caliper Mounting Brackets & Hardware
- 2x Stainless Steel Braided Brake Lines with Teflon Inner Core
- Complete Set of Installation Bolts & Hardware
PART NUMBERS
- Manufacturer Part Number: FS2A-F204R
SPECIFICATIONS
- Position: Rear Axle
- Caliper Type: Forged Aluminum 2-Piston Rear (FS2A)
- Piston Diameter: 41mm x 2
- Caliper Dimensions: Length: 188.0mm | Width: 144.2mm | Height: 50.0mm
- Rotor Dimensions: 316mm Diameter x 20mm Thickness (1-Piece)
- Rotor Venting / Slits: Vented with Straight 8-Slit Pattern
- Standard Included Compound: Project Mu NS-C (Optional: TYPE PS or D1 spec ZERO)
- Finish: Hard Anodized + Signature Teal Powder Coat
FITMENT
- 2022+ Toyota GR86 (ZN8) & Subaru BRZ (ZD8)
- 2013-2021 Toyota 86 / Scion FR-S (ZN6) & Subaru BRZ (ZC6)
- *Requires most 17-inch or larger wheels
DISCLAIMER
- Backplate Processing Required: Installation requires trimming or modifying OEM rear brake dust shields/backplates.
- Non-Affiliation & Warranty: Direct parallel import of authentic JDM components. We are an independent retailer, not an authorized Project Mu dealer. Factory warranty applies in Japan only.
- 14-Day Defect Window: Customers must inspect all parts upon arrival. Defect, damage, or missing part claims must be reported within 14 days of delivery and prior to installation. Installed items are non-returnable.
- Installation: Manuals are in Japanese. Professional installation by a certified technician is required.