On the XRAY X4'24, we're now able to fine tune the shock angles with shims. The kit comes with 8x 303140-K shims which are 2.0mm, which allows you to use either the kit recommended asphalt or carpet shock angle setting. However, for fine tuning, you may want to get thinner shims. Keep in mind that they need to be of 5.0mm OD to have clearance for the shock cap.
These are the part numbers that you'll want:
303141 - 1.0mm (available in both silver and orange)
303142-K - 0.5mm (available in black and orange)
303143 - 0.25mm (silver colour only)
Alexander Hagberg
Makes it possible to run the diffs extra high. Especially useful for asphalt racing, when you need to make the car more aggressive. On asphalt, I recommend using them in both front and rear. On carpet, I've had good luck with this option mainly on the rear axle (in combination with a raised rear hub, using 1.5 or even 2.0mm of shimming underneath). - Alexander Hagberg
New X4 Alu Adjustable Ball-Bearing Hub +1mm - Black (2)
+1mm hubs for extra high axle position
Extra high position improves rotation
Fine set-up tuning
Increases drivetrain efficiency
Stronger
Reliable
Longer life span
Swiss 7075 T6 aluminum
Black coated
Laser engraved
Fits X4 & X4F
#302064-K Alu Adjustable Ball-Bearing Hub +1mm - Black (2)
To continue with my XRAY X4'24 "tech tip FAQ". Many customers have expressed that the anti-roll bars are a bit trickier to work with than the old solution. Keep in mind that this was a design compromise that had to be made to improve the car's performance. 100% worth it, if you ask me. Here's a couple of tips & tricks which may help you.
To install and remove the ARB wires, I recommend removing the FF lower arm screws in the front and the RR lower arm screws in the rear for better access. When installing or removing the anti-roll bar wire, I recommend tightening it into the collars of the arms as the first and last thing that you do. For example, put the bar and lower arm in place, and THEN tighten the set screws of the collars. And loosen those screws for the reversed process (when removing the bar). The anti-roll bar installation or removal process is best done with the shock absorbers disconnected/removed.
The process of setting the anti-roll bars is no different to the process on the previous X4 & T4 platforms:
Set the desired downstop value
Use the small screws in the lower arms to adjust the length of the ball cups that hold the ARB, to achieve an even lifting point between L and R. Start with a 14mm length (as shown in the picture below).
Please refer to this video (just to 3min 25sec) if you have any doubts
Some customers forgot to install the little screws that hold the bearings from the inside of the bulkhead, which obviously will make the task impossible, to fit the anti-roll bars sufficiently in place.
The first time that you install & remove the anti-roll bar, it may take you a little longer. But trust me, the 2nd time around it's already a lot quicker. It's simply a question of habit.
