PARAGON 4-Piston Rear Big Brake Kit Subaru WRX / STI (GR/GV/VA)

$3,875.00
SKU: PBK.04.170.355.320.TL.01.02.Px.R.P2
Caliper Finish
Brake Pad Compound
Rotor Size
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PARAGON 4-Piston Rear Big Brake Kit Mil-Spec Hard Coat Anodizing / P2 Street Performance / 355x32mm - PA025 Caliper$3,875.00

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This complete, track-ready big brake kit is designed for the Subaru WRX and WRX STI (GR, GV, VA chassis). Engineered for track day performance, it features the same quality and design standards proven in endurance racing environments. Every component is selected for optimal performance, cooling, and durability under demanding driving conditions.

Key Features:

  • Paragon PA025 4 piston rear calipers

  • Fully-floating 2-piece rotors with 48 directional ventilation vanes – up to 30% cooler than OEM

  • Calipers available in Mil-Spec hard anodized or ENP electroless nickel plated finishes

  • Hard anodized rotor hats – high resistance to wear and discoloration under extreme heat

  • Piston sizes tailored for WRX / STI applications – fully compatible with OEM ABS and master cylinder

  • Excellent heat resistance, consistent pedal feel, and strong brake modulation during extended sessions

  • Designed for both street and track use

  • Complete pre-assembled rear axle kit – bolt-on installation with no modifications required

  • Retains OEM electronic parking brake (E-brake) function

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