Drive Shaft Shop (DSS) Stage 5 Front Axles (750hp) Subaru WRX STI (2008–2021)

The Drive Shaft Shop (DSS) Stage 5 Direct Fit Front Axles for the 2008–2021 Subaru WRX STI are engineered for extreme performance use, delivering proven durability across drag racing, circuit driving, and rally conditions. Rated to support up to 750 horsepower, these axles are built to handle high-load launches, aggressive driving, and long-term reliability under severe conditions.

DSS Level 5 systems have become an industry benchmark, featuring proprietary oversized spline designs and high-strength materials to address common axle failure points. Designed for OEM-style direct fitment, these axles install without vehicle modification while providing significantly increased strength over factory units.

Manufactured using 300M aerospace-grade steel for the axle bars and splined stubs, paired with chromoly CV housings, this kit delivers exceptional torsional strength, impact resistance, and fatigue life—ideal for high power builds and motorsport-focused STIs.

Key Features

• Stage 5 performance front axle system
• Rated to 750 HP
• Direct bolt-in OEM-style fitment
• Proprietary oversized spline design for increased strength
• 300M axle bars and 300M splined stubs
• Chromoly CV housings for high-load durability
• Designed for drag, road, and rally use
• Sold as a pair (one pair per vehicle)

Technical Specifications

Part Numbers

• SKU: 510262 / 510262
• Previous SKU: RA8533X5 / RA8533X5

Vehicle Fitment

• Subaru WRX STI (2008–2021)

Warranty & Notes

• Warranty: 1 Year
• Important: Product is non-refundable after installation