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Tomioka Racing Authorized Dealer

Tomioka Racing (TR) TR R180 Billet Rear Differential Cover for Subaru STI 2008-2021 GR/GV and VA () TR-TM2054

Tomioka Racing (TR) TR R180 Billet Rear Differential Cover for Subaru STI 2008-2021 GR/GV and VA () TR-TM2054

sku: 9IU8L | mpn: TR-TM2054
$530.00
$530.00 $530.00
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Emissions

This is not an emissions item.
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Built for heat and horsepower. The Tomioka Racing R180 billet rear diff cover increases oil capacity and features deep finned cooling for improved heat management. Engineered for hard street use, track days, and endurance sessions.

  • +27% oil capacity with finned exterior for improved heat dissipation
  • Hard-anodized 6061-T6 billet construction
  • Magnetic M20 drain & fill ports
  • Stainless hardware included; subframe/sway-bar clearance verified
  • Finish: Anodized Gunmetal Blue

Applications (Fitment)

Subaru Impreza WRX STI 2008–2014 (GR/GV) and 2015–2021 (VA)

Note: Not compatible with 2004–2007 STI (GDB) — different cover pattern.

Technical Specifications

Material 6061-T6 billet aluminum, CNC-machined
Finish Anodized Gunmetal Blue
Capacity Gain +27% vs. OEM cover
Cooling Machined external fins for increased surface area
Service Ports Magnetic M20 drain & fill
Weight 4 lb (1.8 kg)
Install Time ~45–60 minutes
Hardware Stainless fasteners included

What’s in the Box

  • TR R180 CNC Billet Rear Differential Cover
  • 1 × OEM rear differential cover gasket
  • 1 × OEM rear differential breather
  • 2 × Differential mounting studs & nuts
  • 1 × Magnetic M20×1.5 drain plug
  • 1 × Magnetic M20×1.5 fill plug
  • 8 × Cover-to-housing mounting bolts
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