Description
Rollin Motorsport AU Upper Arm Caster Adapters. These allow fitment of AU Front Upper Control Arms to an EA, EB, ED, EF or EL Falcon (and NA, NC, NF, NL Fairlane), giving more caster than what is possible with factory upper arms, giving improved cornering grip. Factory arms normally get around 4 degrees caster, with these adapters and AU arms you can see 9+ degrees.
AU Upper Arms are slightly longer than E-Series arms, which will give you more camber for the same amount of shims. We recommend halving the amount of shims before going for a proper wheel alignment. AU upper arm mounts also come with longer bolts, meaning you can fit more shims before requiring a camber kit.
This item is for one pair of adapters (left+right). You will need to supply a pair of AU upper arms (eBay or a wrecker) and a press to fit the adapters (any local mechanic or suspension shop can press them in).
As Dan says:
More caster is good because caster gives dynamic camber – when you turn the steering wheel you get more camber than you have at straight ahead. You can either choose to run less (or zero) static camber to reduce uneven tyre wear while retaining current cornering abilities, or run your current static camber for much more dynamic camber on turns, giving more grip.
AUs already have quite long bolts that go through the chassis, so you shouldn’t need a camber kit for the AU arms, whether you want to run spastic camber and caster or near stock levels.
Use of these adapters with AU arms in an E-series Falcon on the road may require a modification plate or inspection by an engineer in your state. You may need to alert your insurance company to ensure that your insurance will not be voided by the fitment of these adaptors.
Every effort has been made to ensure that these adapters are manufactured to high standards and when fitted in accordance with the instructions you should have no problems. Usual story with any modification – All care and no responsibility taken.
Please read the AU Upper Arm Adaptor Fitting Instructions and Historical Info before purchase.
Fred –
Better than the actual AU press in top ball joint that can fall out and destroy your car
Jarryd h (verified owner) –
Definitely more then happy with the results these gave. Steering feels much more responsive and tighter. Would recommend good tyres and shocks as a combo deal with these but not necessary if on a budget
Michael (verified owner) –
Bought them for my ED, Its an worthwhile upgrade making the front end feel a whole lot better.
Blake Nolan (verified owner) –
Changes the hole dynamic of the front end! So much tighter, turns in much harder, these are the perfect upgrade for the front end.
Jay –
I highly recommend this mod. I race lap dash events on go kart tracks so front end grip is vital. With the standard upper arms the car was hopeless. It just wouldn’t turn in.
After fitting the T.I. Performance au upper arm adapters, with no other changes, the car now turns so damn well that I am now having issues with rear end grip haha. Even driving on the street the steering is more direct and has a much better feel. I should add I also race hill climb and the improvement is just as impressive in high speed corners.
I’ll be buying another set soon for my new EF track car.
Nick Botonis (verified owner) –
Fitted them on the arms, but haven’t fitted them to the car as yet, due to other modifications to do still. Adapters fitted nice and tight.
I’ve always been happy with Jason’s work and products that’s why I’m always back. A customer for life.
Doug (verified owner) –
Great service, you guys will always get my business, awesome, love your work.
Doug (verified owner) –
Loving the service provided by these guys, awesome work indeed
Brendon –
Fantastic upgrade from the daily to the track car.
Had them in all 3 of my falcons.
2 dailies and the drift falcon.
After fitting them and getting a wheel alignment the difference was amazing.
With close to 9° caster the steering tends to center a lot easier.
10/10 would buy again.
Daniel –
I have had a set in my EL wagon for ~10000kms. Changes the way it drives, and is so much better. Tighter turning circle is very handy too. Extremely worthwhile, get onto them
Tim A –
I have a set of these in my ED… Fantastic upgrade… Car is much nicer to drive and feels better all round…