The Ultimate Guide to Subaru WRX Racing Parts
For Subaru WRX owners looking to transform their daily driver into a serious track weapon, selecting the right performance parts makes all the difference. The WRX platform offers incredible potential for motorsports applications when equipped with proper racing components. In this comprehensive guide, we’ll explore the essential Subaru WRX racing parts that deliver real performance gains on road courses, autocross circuits, and rally stages.
Suspension: The Foundation of WRX Performance
The stock suspension simply can’t handle the demands of aggressive track driving or rally competition. Here’s what serious competitors need:
Coilover Systems
- BC Racing BR Series Coilovers – These offer exceptional value with 30 levels of damping adjustment, pillowball mounts, and custom spring rate options perfect for WRX track applications
- Height adjustable design allows perfect corner balancing
- Monotube construction provides consistent performance during extended track sessions
- Available with optional swift springs for even better response
Sway Bars and Bracing
- Upgraded sway bars (22-24mm front/20-22mm rear recommended)
- Strut tower braces for improved chassis rigidity
- Lower chassis braces to reduce flex during hard cornering
Engine Performance Upgrades
While the WRX’s FA20/FB25 engines respond well to modifications, strategic upgrades yield the best results:
Forced Induction
- High-flow turbochargers (Blouch, IAG, or Garrett options)
- Front-mount intercoolers for consistent power delivery
- Turbo blankets and heat management solutions
Fuel and Tuning
- High-flow fuel pumps (DW300 or AEM 340 recommended)
- Larger fuel injectors (ID1050x or similar)
- Professional ECU tuning (Cobb Accessport or stand-alone systems)
Braking Systems for Track Duty
Stock WRX brakes fade quickly under track conditions. Serious competitors need:
- 4-6 piston caliper kits (Wilwood, Brembo, or StopTech)
- Two-piece floating rotors for heat dissipation
- High-temp brake fluid (Motul RBF600 or similar)
- Stainless steel brake
Wheels and Tires for Competition
The right wheel/tire package transforms WRX handling:
- Track Wheels: 18×9.5″ lightweight alloys (Enkei, Volk, or OZ)
- Competition Tires: 265/35R18 track rubber (Nitto NT01, Toyo R888R)
- Rally Wheels: 15″ or 16″ gravel-type wheels
- Spare Parts: Extra wheel bearings and hub assemblies
Drivetrain Upgrades for Reliability
The WRX’s symmetrical AWD system needs reinforcement for racing:
- Short-throw shifter kits (Kartboy or COBB)
- Upgraded clutch kits (ACT or Exedy)
- Rear differential bushings and mounts
- Transmission coolers for extended sessions
Interior and Safety Equipment
Proper safety gear is non-negotiable for track use:
- FIA-approved racing seats and harnesses
- Bolt-in roll cages or harness bars
- Fire extinguisher mounting systems
- Lightweight battery relocation kits
Aerodynamic Enhancements
For serious time attack competitors:
- Front splitters and canards
- Rear wing solutions (GT-style or swan neck)
- Undertray systems for improved airflow
- Hood vents for engine bay cooling
Rally-Specific WRX Modifications
For dirt and gravel competitors:
- Skid plates and underbody protection
- Rally-spec suspension with longer travel
- Light pods and auxiliary lighting
- Mud flaps and body protection
Maintenance Considerations for Race WRXs
Competition use demands rigorous maintenance:
- Oil changes every 1-2 track days
- Frequent brake inspections
- Suspension bushing checks
- Cooling system upgrades
Building a Balanced WRX Race Car
The most successful WRX race builds focus on balance rather than outright power. A 300-350whp WRX with can race other cars. The BC Racing BR coilovers for WRX provide an excellent foundation, allowing precise adjustment of ride height and damping to suit various track conditions.
When selecting Subaru WRX racing parts, prioritize quality components from reputable manufacturers. The motorsports aftermarket offers countless options, but the best results come from strategic upgrades that work together harmoniously.
