Tomioka Racing 1000HP Rear Axle Kit — Subaru Impreza STI (2004–2005)

Upgrade your 2004–2005 Subaru STI with Tomioka Racing’s 1000HP rear axles. Aerospace‑grade steel, 27‑spline, ABS‑compliant. Sold as a pair. Special order - Made to Order.

When power comes up, weak links show first. On EJ‑powered Subarus, the rear axles are a common failure point under hard launches and sticky tires. Tomioka Racing’s 1000HP Rear Axle Kit solves that problem with aerospace‑grade steel construction, 27‑spline engagement, and ABS‑compliant hardware—engineered for cars that actually see track days, drag passes, and time attack abuse. Each kit includes a matched left and right axle to ensure consistent strength and fit. If you’re building a 2004–2005 STI and want reliability with headroom for four‑digit power, this is the straightforward upgrade. Note: This is a special‑order product; plan for production lead time.

Key features

• Rated to 1000 HP/WHP use for serious drag/track builds

• Aerospace‑grade steel shafts resist twist and shock loads

• 27‑spline teeth for robust engagement

• ABS‑compliant design

• Sold as a matched pair (LH + RH)

• Special order item (production lead time applies)

Kit Contents:
• High Performance Rear Axle x 2