Whiteline Rear Diff Positive Power Kit Inserts

Part #: WHI KDT903
( 43 reviews )

$50.83


MSRP: $59.80


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Return Policy | Shipping


CONFIRM FITMENT


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.



SPECS


Brand: Whiteline
Bushing Location: Rear Differential / Differential Support
Installation Hardware Included: No, reuses OEM
Material: Urethane
Mfgr. Warranty: 1 year
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.
RallySport Guarantee
  INSTALLATION INSTRUCTIONS

CONFIRMED FITMENT


Subaru Impreza
WRX STI Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX STI Special Edition Hatchback 2010WRX STI Limited Sedan 2011, 2012, 2013, 2014WRX STI Limited Hatchback 2011, 2012, 2013, 2014WRX STI Sedan 2011, 2012, 2013, 2014WRX Sedan 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Premium Sedan 2010, 2011, 2012, 2013, 2014WRX Premium Hatchback 2010, 2011, 2012, 2013, 2014WRX Limited Sedan 2010, 2011, 2012, 2013, 2014WRX Limited Hatchback 2010, 2011, 2012, 2013, 2014Outback Sport 2008, 2009, 2010, 20112.5 GT Sedan 2009, 20102.5 GT Hatchback 2009, 20102.5i Sedan 2008, 2009, 2010, 20112.5i Hatchback 2008, 2009, 2010, 20112.5i Premium Sedan 2010, 20112.5i Premium Hatchback 2010, 2011
Subaru Legacy
2.5i 2010, 2011, 2012, 20133.6R 2010, 2011, 2012, 20132.5GT 2010, 2011, 20122.5i Limited 2011, 2012, 20132.5i Premium 2011, 2012, 20133.6R Limited 2011, 2012, 20133.6R Premium 2011, 2012
Subaru Forester
XT 2009X 2009, 2010, 2011X Limited 2009, 2010, 2011X Premium 2009, 2010, 2011XT Limited 2009, 2010XT Premium 2010, 2011, 2012, 2013X Touring 2011XT Touring 2011, 2012, 2013

The Whiteline Rear Differential Positive Power Kit Inserts are inserts to the rear differential bushings.  These are not factory replacement bushings, these are designed to fill in the voids of the factory bushings so you don’t have to press the factory bushings out. The job of the Whiteline Rear Diff Positive Power Kit is to secure the rear diff in its cradle within the subframe.

Your rear differential will have substantial movement or flex under hard launches, as well as hard acceleration. After installing these Whiteline inserts, the movement will be significantly reduced, and this will improve cornering, and improve launches, and overall improve the feel and dynamics of the car. 


REVIEWS ( 43 )

OVERALL 5

95%
5 STAR
5%
4 STAR
3 STAR
2 STAR
1 STAR
Verified Purchase
Great!
mdemirj994863 3 months ago
Excellent product. Very easy install.

Does a great job rounding out my other drivetrain mods
ptak11 4 months ago
Other related mods: solid engine mounts, beatrush trans mount and pitch stop, STS and shifter bushings, and whiteline positive shift kit. When getting on the throttle whether it be after a up shift or throttle tip in the power deliver seems more instantaneous than before even with other drivetrain mods done. As others have mentioned there's less "lag" with the delivery of power. Cheap, easy, and well worth the price if you ask me. I've been putting this one off and did this, whiteline positive shift kit, and coilovers on at the same time. This improved power deliver and throttle response on the upshift whereas the positive shift kit improved downshifts (in my case that is). The inserts are a bit of a tight fit but will slide in just fine. They're pretty stout inserts and was very happy with the quality of the inserts. Noticeable difference even with other mods done and would do it again if I had to.

Nice, easy, and good price
Nic 4 months ago
Not something necessary on everyday driving, however if you do not want to worry about a lag or bounce when putting the power down (especially on harder launches) I would highly recommend this product and the price is just right. Install was very easy. I just jacked the rear end up and used hand tools with no issue. The one thing I would recommend is lubing the bushings up thoroughly because they literally fit the exact void in the stock bushings and the lube with help ease this.


Simply amazing
Mellopl 5 months ago
This will take you 30-45 minutes to install with lifting the car. I installed this yesterday along with the Perrin subframe lock down kit since they are both in the same area. Let me just say... wow, this is one of my favorite mods to date. It totally gives the rear end of my hatch the oomph it needed under acceleration. There is no slop, the car just goes, and by goes, I mean it GOES. Throttle down you get an even faster in your seat push and it feels solid. The rear end has less side to side slop on hard turns thanks to the perrin kit but it also helps the sub frame stay stiff which compliments these inserts so well. I would definitely recommend this along with the sub frame lock down. Easy mod that requires minimal tools and gives you a big difference in your driving experience and gives you a true feel of the torque of the 2.5.
Verified Purchase
Great upgrade
subyski 5 months ago
Excellent Quality. I installed this on a 2008 Subaru Impreza 2.5i MT. Improved shifting and removed a lot of driveline slop.
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QUESTIONS & ANSWERS (15)

  • AnswerQ: would it fit a 2000 subaru legacy gt 2.0 wagon   bossross 4 months ago

    Just wondering if it will fit! Please let me know asap I need to buy them. Any other easy upgrades I could do let me know I need info! Thanks


    • A: Hello BossRoss, No this kit (KDT903) is not confirmed for your 2000 Legacy. The correct rear differential insert for your vehicle would be KDT927. If you have any other questions, feel free to contact us directly at support@whitelineus.com.


      Jonathan @ Whiteline 4 months ago


  • AnswerQ: Torque  Mellopl 12 months ago

    What ft-lb do these need to be torqued back to? I will be ordering these in the next few days and I'd like to be ready to put them on right.


    • A: The torque of the bushing nuts should be the factory specs of 51.6 ft-lbs.


      guest569faaee2a8d2517038b4568 12 months ago

    • A: Our installation instructions are generally designed to be used with the factory shop manual. The torque specs for this kit would need to be attained from the factory shop manual or a Subaru Dealer. However Duder did supply some torque specs below for a 2012 STI which seem to be fairly accurate. I recommend confirming the torqu specs for your vehicle with a trusted source.


      Jonathan @ Whiteline 12 months ago


  • AnswerQ: whiteline rear poss. inserts  buc2013 12 months ago

    can I use Whiteline rear diff. positive power kit inserts with Prothane subframe inserts ? or are they the same inserts? does whiteline make inserts for subframe ? does rallisport have them here


    • A: The rear diff positive power kit will be different from the Subframe inserts and you could use both. Whiteline does not make subframe inserts however, our Perrin or our Kartboy have shown to be just as great!


      Spencer H. 12 months ago


  • AnswerQ: whiteline rear diff.posi. power kit inerts   buc2013 1 year ago

    do these fit a 2011 impreza non/turbo auto.


    • A: These bushings are confirmed to fit a 2011 Impreza 2.5i.


      Zach G. 1 year ago

    • A: Yes, this kit will fit the naturally aspirated 2011 Impreza.


      Jonathan @ Whiteline 1 year ago


  • AnswerQ: torque spec  duder 1 year ago

    Anyone know what to torque these to? 45lbs?


    • A: Our installation instructions are generally designed to be used with the factory shop manual. The torque specs for this kit would need to be attained from the factory shop manual or a Subaru Dealer.


      Jonathan @ Whiteline 1 year ago

    • A: Found them! For 2012 STI: rear bushing bolts (2): 51.6 ft-lb cross-member bushing bolts (2): 81.1 ft-lb other cross-member bolts (2): 36.9 ft-lb


      duder 1 year ago


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