Shaped by crews worldwide. Crafted in Japan.

Rally computers and tripmeters built on what crews tell us — from the jungles of Asia to the high-speed stages of the WRC.

Designed and built in JapanGPS and speed-signal models
Line drawing of the ARM Twin Trip front panel
Professional-grade precision, made accessible — for seasoned crews and the next generation of rally enthusiasts.

ARM products designs and builds rally computers and tripmeters in Japan. Every model starts from what crews need on the stage: readings they can trust, controls they can use with gloves on, and displays they can read at a glance.

Our "Made in Japan" quality is shaped by the feedback and demands of rally competitors around the world.

Manufacturer team rally car
Supporting a manufacturer team at AXCR 2024–2026.
ARM TT Raid custom spec mounted on the co-driver side of the dashboard
ARM TT Raid custom spec on the co-driver’s dash.

Built for the stage, not the showroom

The details crews ask for, in every model where they fit.

Calibrate to the road book

Match any road book with one factor: ARM distance ÷ road book distance.

Forward, stop, reverse

Hold the distance or subtract it when you go back after a wrong turn.

Ave final time

See how much time you have in hand against the target average before the next TC.

Speed alert

Blinking display and LED before and above your limit — ready for liaison sections.

Recce-ready distances

Show distances under 10 km to the metre for clearer pace notes.

Keeps your data

Trips, calibration and settings are kept when the power is off.

Questions before you order?

Tell us your car and your events — we’ll help you choose.

Contact us