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  • VW MKIV R32 and Audi TT MK1 Adjustable Rear Control Arms by
  • Poly End Zirc Fitting Now Relocated for Easier Access !

TT/R32 Adjustable Rear Control Arms

21.00 LBS

Product Description

POY ENDS NOW COME WITH EASIER ACCESS ZIRC FITTINGS !! provides the complete solution for your VW MK4 R32 or Audi MK1 TT.  We offer a full line of adjustable rear control arms and front and rear adjustable stabilizer bar end linkages.  These products not only solve the issues with aligning a lowered vehicle, they also work great to tweak alignment on non-lowered vehicles!  Please read the descriptions below regarding the various product options and note that you can save $ when buying 2 sets of control arms, as well as buying the control arms in conjunction with the front and rear adjustable stabilizer links. 

The GruvenParts adjustable rear control arms allow for complete rear wheel alignment.  You can choose between 1 set to adjust camber only, or 2 sets which allows for camber and toe adjustment.  2 sets is recommended if you want to maximize rear tire life and is mandatory for drops greater than 3/4".

You can decide between the Poly Ends and the Spherical Ends on the inboard (differential) end. 

  • Poly bushing ends feature FORGED 4340 Alloy Steel housings (not cheap threaded studs welded onto DOM shells), screw in grease fittings (NOT press in), zinc plated steel sleeves with outer protective hat area to protect the poly bushing, and race grade, pre-greased proprietary polyurethane bushings. The threads on our forged fittings are also ROLLED as opposed to lower strength cut threads. If you are looking for a poly end for your control arms, this one is the ULTIMATE.


  • GENUINE FK JMX Series zero deflection high radial load PTFE lined spherical joints with protective dust boots preinstalled over specially machined bushings. The fit of the boot over the spherical joint and bushings is nearly water tight. This set up is preferred by racers or those who are looking for the highest level of performance.  The trade off will be noise, as the all metal joint transfers more noise into the cabin of the vehicle.  If you are already running stiff springs and heavy anti-roll bars, you will likely not notice the added noise, vibration, and harshness of this all metal joint.

You decide which set up you want. Either work well for both street and track, but the spherical ends will perform better on track due to zero deflection (but may be a bit louder). IE – if you want a Cadillac ride, go poly end. If you already have a lowered, stiff set up, you wont notice the added rigidity of the spherical ends. 

Additional features which set our control arms apart from the copy cats :

  • Super strong, heat treated 4340 aircraft grade chromoly rod and ¼” thick U-Joints with machined, internally lubricated (molybdenum disulfide) threads. No weak aluminum is used for these parts (aluminum threads just don't hold up to multiple adjustments). 
  • Distinct adjustment flats incorporated into the bars which allow for 2” of length adjustment with an honest to God wrench, while they are installed on the car. There is no knurled adjustment nonsense here, ours are simple (and not made in China) !   You can quickly adjust the rear wheel alignment with the control arms fully installed, unlike some competitor versions.
  • Thick, durable powder coat finish (and zinc on the poly bushing ends) in your choice of high gloss black or Bilstein jazz blue. 
  • Made right here in Atlanta, Georgia by our FAA approved commercial aviation machine shop working on state of the art Haas CNC mills and lathes. You wont find many shops working at our level, and you wont find higher quality anywhere ! We are aware of several cut rate competitors using Chinese hardware - DONT FALL FOR IT - You will be replacing them every few months and will jeopardize your safety as well as all those around you.  This is not the part to skimp on.  In fact, many of our new customers come to us when they are fed up with the cheap cut rate Chinese versions failing on their vehicle.  Save yourself the time and hassle and get a good adjustable control arm in there from the start !

This product is sold in sets of 2 arms. Buy 1 set to adjust camber only while 2 sets will allow for camber and toe adjustment. For drops greater than 3/4 inch, we recommend 2 sets as this will provide you with all the adjustment you need.

This product fits : Audi TT (2000-2006), Audi A3/S3, VW MKIV R32 (2004), Golf 4motion and 4motion Variant, VW Bora 4motion and 4motion Variant and replaces OEM P/N’s 1J0-505-323L (1J0505323L) and 1J0-505-323N (1J0505323N). 

** Please Note : Some vehicles have short (less than 80 mm) outboard bolts. Because our control arms are made from a thicker U-Joint material than stock, it is necessary to install our control arms with 80mm bolts on the outboard ends. If your vehicle needs new outboard bolts (or inboard bolts), please visit the Extra Hardware page below to buy individual parts after placing the control arms in your shopping cart.

**Additional Purchase Options :

You can also buy these great products along with our adjustable rear control arms :

Adjustable Rear Stabilizer Bar Linkages

Adjustable Front Stabilizer Bar Linkages  

Extra Hardware - headlight leveling brackets, longer bolt kits, or any replacement hardware for our rear control arms.


Warranty Information 
These parts are warranted by GruvenParts to be free from any defect for 1 year. The spherical ends will not be replaced if they develop slight (less than 1/32”) wear, as that is normal as the PTFE liner and ball mate together.  If you have any issues or concerns even after the warranty period, please contact us directly. 


Product Reviews

Showing reviews 1-10 of 15 | Next

  1. best daily alternative 5 Star Review

    Posted by on 22nd Feb 2021

    I want to start out by saying, these are the best daily driver adjustable alternate out there, and Gruven's work is always top knotch. I have only two small critiques. A 90 degree grease fitting was needed to be swapped out for the upper inside bar end (easily found at any auto parts store), and for ultimate durability eased edges would add to longevity as the powder coat is very thin at the sharp edges of the outter bushing brackets.

  2. Best Adjustable Rear Bars on the Market 5 Star Review

    Posted by on 22nd Oct 2020

    The craftsmanship and materials of these bars are well worth the price. Easy to install and adjust.

  3. High Quality is an understatement. 5 Star Review

    Posted by on 25th Apr 2020

    These adjustable control arms are first rate. Very high quality and well packaged. Looking forward to installing them and getting a proper adjustment on the rear of my lowered TT.

    Thank you,

  4. Quality Product ! 5 Star Review

    Posted by on 20th Jul 2018

    The manufacturing quality and fit of the control arms is top notch. Arrived quickly too. Very impressive.

  5. Awesome quality 5 Star Review

    Posted by on 6th Mar 2017

    Waiting for the snow to melt in the northeast to install these, but the quality of materials and build are second to none. Got two sets to be able to dial in camber and toe once my new set of Koni coilovers go in, and with the new grease fittings, service should be a breeze. Glad i decided to go with the best the first time around.

  6. Worked perfectly '04 R32 5 Star Review

    Posted by on 11th Aug 2016

    Got these with poly ends to get my rear camber and rear toe in line. Went from -3.5 degrees and -2.5 degrees to -1.5 degrees, and there was still plenty more adjustment left. Shipping was quick. Recommend getting new bushings and bolts for the knuckle/spindles, chances are the bolts are seized in there.
    Have been driving for a week now and the car feels great. Will try to update in a years time.

    -- response --

    Thanks Jeff. Would love to see pics posted on the forums of your car and your install ! FYI we also have the adjustable swaybar end links using the THK exclusive rod ends. Let us know if you need anything more !

  7. Adjustable control arms for mk1 tt 5 Star Review

    Posted by on 19th Apr 2016

    Great quality. Make sure to order an extra set of m12 x 1.5 x 80 mm to replace the stock 75 mm bolts. The outside flanges are thicker than stock so the extra bolt length is required.

  8. Solid Product and excellent costumer service. 5 Star Review

    Posted by on 12th Apr 2016

    Able to now get both toe and camber into spec. Replaced a pair at a time which was a mistake should have listen to you guys.

    Lowered the car with h&r sport springs and the camber was out but the toe was ok.

    Replaced the lower set of control arms and then the toe was out so had to do the uppers as save the money and order both pairs if you have lowered the car as outlined on this website!

  9. Excellent Quality with great appearance 5 Star Review

    Posted by on 2nd Dec 2015

    Control arms have exceptional build quality. Ends are durable and able to be lubed for maintenance. Allow for complete adjustment. Highly recommend for anyone looking for extra adjustment. My R32 has 150K miles and has reached max alignment on factory control arms. These are great upgrade. Caution when taking to shops for alignment. In my run in with a national chain I had a lazy tech who damaged my set but not related do to the product. I advise to mention when at the shop too specifically tell them what needs to be done and how.

  10. awesome 5 Star Review

    Posted by on 24th May 2015

    They are great. Work great. Look awesome. And definitely does the job. Fast shipping A++++++++


    Thanks Jacob for the review. Would love to see install pics on the forum if you can.

Showing reviews 1-10 of 15 | Next

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