XB4 A Block

Have you ever wished your XB4 had more steering?

Well… that makes two of us.

Introducing our line of XB4 A Blocks.

One good hit is all it takes to bend a stock A block—so we set out to build something stronger. While we’re joking about it taking one good smack, these are no joke. Each block is machined from American-sourced 7075-T651 aluminum for maximum strength and individually inspected to ensure consistent, precise pill fit.

We offer two different options to handle multitudes of track conditions you’re going to face.

Wide Standard

This is the width that comes stock on the ’25 and ’26 models—only stronger. Designed to get you where you’re going and hopefully come back in one piece. Ideal for high-bite tracks, whether clay or carpet.

Wide High Roll Center (HRC)

These blocks are unique because they do not require a matching HRC B block to function properly (but hey—who’s to say that won’t exist someday).

The HRC design allows finer front-end tuning through kick-up adjustment. These variations add 2 degrees of kick-up at center-center:

• Standard A Block: –2° to +2° of kick-up
• HRC A Block: 0° to +4° of kick-up

Perfect for both stock and mod drivers looking for a more aggressive, responsive front end without giving up consistency.

Note the upper part of the bumper has to be trimmed a few millimeters for fitment with the raised pill carriers.