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Driveshaft Shop 800hp CV Axle Upgrade Rear ( Part Number:DSS RA8528X4/RA8528X4)

Driveshaft Shop 800hp CV Axle Upgrade Rear - Subaru STI 2004-2007

MODEL # DSS RA8528X4/RA8528X4
Manufacturer Part # RA8528X4/RA8528X4


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Its been a long time coming for this set of axles. When the STi came out, many had surpassed the 600HP mark and they went right from the axle bar upgrades using the factory CV's to the level 5 Axle and Hub kits. Some time has passed and the cars are starting to get older, and most builds are under 800HP so they decided to make a direct bolt in axle that will support 800WHP.

This is similar to their Level 5 axle except the outer CV is made from Billet Chromoly and the internals are also made from the same high grade material, while using the original spline size to fit the stock hubs. To make sure the center bar was up to the task of hard launches, autocross and rally demands, they have decided to use the new 300M material they have been getting directly from the mill in Sweden (*Ovar). This material has proven to be without a doubt the strongest and most resilient bar material they have used to date. Also they have recently changed the inner CV from a tripod design to a full ball and cage design with a larger radius to the spline plug for added strength. So there you have it, a direct fit axle that will with stand the most violent launches, time attack or rally applications (ask about the road rally package that uses a ultra high grade grease and vented boots).
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Brand: DriveShaft Shop
QTY: 2
Range: 800hp

Mfgr. Warranty: 1 Year
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.


This product has no user uploaded media. You can upload your photo or video of your install by posting a review. Reviews:

  • Q: Hubs?  Abiel 8 months ago


    Recently did an 07’ 6 speed STi swap. Kept my R160 in order to keep my 5x100 hubs. Will this axle set allow me to maintain my 5x100s or would I need to go R180 and do hybrids?

    • A: You would need to run the R180 and 5x114.3 hubs to run these axles.

      Tyler G. 8 months ago
    • A: Hi Abiel, We can offer an axle for your setup but it would be best to call the office to get the correct components ordered.

      Tad 8 months ago
  • Q: Weight  IGOT THIS 2 years ago


    Hi, How much do these shafts weigh compared to the factory set of shafts?

    • A: We do not have the factory weights but these are 38lbs for both.

      Nick S. 2 years ago
  • Q: Fitment for a GC8  Joshz91276 3 years ago


    Just wondering if these would fit my MY96 V3 WRX STi Type RA, It has factory R180 diff.

    • A: We do not have the ability to confirm fitment with JDM Vehicles which we have never tested.

      Nick S. 3 years ago