Setup guides

The #1 problem in motocross is not a lack of calculators. It is standing next to your bike knowing something is wrong and not knowing what to change. These are the numbers that answer that, and why they matter.

MXDialed · Updated August 2026

Suspension How to set race sag on a dirt bike Three measurements, ten minutes, and the setting that decides whether every other adjustment is worth anything. Includes the static-sag test that exposes a wrong spring rate. Suspension Spring rate by rider weight Fork and shock rates in kg/mm by geared weight, how riding pace moves you within the range, and why your own sag measurement outranks any chart. Engine · 2-stroke 2-stroke jetting for altitude and air density What thin air does to your main jet, the needle clip direction almost everyone gets backwards, a worked chart, and how to read the plug that tells you the truth. Air Density altitude, and what it costs you Pressure, temperature and humidity in one number. How much power you're actually giving up, and what to change — jetting, gearing, or map.

Or just tell the app what the bike is doing

Pick the symptom — headshake, won't turn, rear kicking, packing in the whoops — and MXDialed gives you the changes in the order a tuner would actually try them. It also refuses to hand out clicker advice while your sag, spring rate, or suspension service is the real problem.

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Free, no signup, works on a phone at the track.

More coming

Guides in progress: gearing and sprocket ratios, tire pressure by condition, service intervals by bike type, clicker settings explained, and a set of symptom pages — headshake, front washing out, rear packing, bottoming.

If there's something you keep having to look up, tell me and it goes to the front of the list.