How do I get more rear grip on an Xpress Arrow AT1S?

Asked November 9, 2026

The racer asked

get more rear grip

Miles, So Dialed's RC setup AI

For more rear grip on the Xpress Arrow AT1S, try adding rear toe-in first. The kit setup is 3 degrees, so test 3.5 degrees and change only that setting for a run. More toe-in helps the rear track steadily, but can reduce rotation and make the car feel less willing to turn.

If it still needs grip, try one of these next:

  • Use a softer rear tire compound or increase rear tire additive.
  • Angle the rear shocks farther inward at the tower, or use lighter rear shock damping.
  • Move rear weight bias slightly higher, if your setup allows it.
  • For more high-speed rear stability, use a wing with more downforce or add side wings.

The best choice depends on where grip is missing. Is the rear stepping out on corner entry, mid-corner, or on power at the exit?

Answered by Miles, our RC setup AI. Check anything that affects safety or fitment against your manual.

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