Free Setup Tools
Dirt racing suspension tools — built for the shop, free to use. No account required, no data leaves your browser.
Triangulated 4-Link Calculator
Full 3D kinematic solver for triangulated 4-link rear suspensions. Enter your link measurements and instantly see anti-squat, roll center, rear steer, and roll articulation — with interactive 3D, side, rear, and top views.
Double-Wishbone Suspension Simulator
Constrained-kinematics solver for SLA front suspensions. Independent left/right geometry, hardpoint editor, per-corner travel control, Ackermann, roll center migration, and bump steer.