XRAY X4-2026 Anti-roll Bar AAM - Above Arm Mount - Rear 1,1mm (1) XR-303841

The 1.1mm rear anti-roll bar is what you grab when you need to dial in rear stability without killing rotation on your XRAY X4 2026. This is the above arm mount version, which means it mounts higher on the suspension geometry and gives you a different tuning range compared to the standard position bars.

At 1.1mm thickness, this bar sits in the middle of the range for rear anti-roll options. It's thick enough to control body roll through fast transitions but still lets the chassis work naturally over bumps and surface changes. You'll find this diameter works well on medium to high grip surfaces where you want the rear end planted but not locked down.

The above arm mount position changes how the bar influences the suspension. Mounting it higher up shifts the roll center and alters how weight transfers during cornering. This can help with initial turn-in response and how the car settles mid-corner. If you've been running standard position bars and want more tuning options, the AAM setup opens up new possibilities for chassis balance.

What makes this bar practical is how quickly you can swap it. XRAY designed the X4 2026 with easy anti-roll bar changes in mind, so testing different diameters during practice is straightforward. The bar itself is precision manufactured to maintain consistent flex characteristics, which means your setup stays predictable lap after lap.