Driveshaft Shop X4 800HP Rear Axle - Subaru WRX STI (GR/VA) 2009-2018

This X4 rear CV axle is rated to 800 HP and drops into the GR and VA chassis STI without touching the differential or the hub. Driveshaft Shop turns the shaft from 300M bar stock and fits a 300M splined stub into a chromoly CV housing, a build aimed at street cars that also see drag, road course and autocross duty. The part is symmetrical, so one unit covers either the left or the right side of the car and two are needed for a full pair. Driveshaft Shop covers it with a one year warranty.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy