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Measure.
Improve.
Go faster.

The quickest and easiest way to measure your kart’s rear width accurately, without a helper.

See the gauges How it fits

Precision drives performance.

Top view of a kart rear axle with a laser in its holder on the outside of the right wheel, measuring to the wheel cap on the outside of the left wheel The laser sits in a holder on the outside face of the right wheel and sends a beam along the axle to the wheel cap holder on the outside face of the left wheel. A dimension line below spans the two outside wheel edges and reads 1395 millimetres. Top view · rear axle Outside edge Outside edge Cap Laser 1395 mm 12501300 13501400 1395
Typical rear track range, 1250–1400 mm. Example reading shown.
Trial units Come and try one at the Australian Kart Championship round at Bolivar. Date TBC

The gauges

Two ways to read the width

Both use the same rim insert and wheel cap, so the measurement runs straight down the centre of the axle. Pick the readout you prefer.

Photo: rim insert and wheel cap fitted to a rear hub

Rear Track Gauge

Tape-based

A rim insert with a flush reference line at one end and a stop cap at the other. Push a normal tape measure through the axle until it bottoms out and read the number at the line. One person, no helper.

Measures
Outside rim edge to outside rim edge
Range
1250–1400 mm
You supply
Any tape measure Confirm
Price
$ TBC AUD
BuyEnquireStripe link TBC
Photo: laser holder with the laser measure fitted

Rear Track Gauge Laser

Digital readout

The same insert with a handheld laser measure locked in a printed holder. Switch on, set the reference to front, press once and read the width on the display.

Measures
Outside rim edge to outside rim edge, along the axle centre
Range
1250–1400 mm
Kit
Laser holder, wheel cap, laser measure, quick start card
Price
$75 AUD? TBC
BuyEnquireStripe link TBC

Rear Track Gauge Laser

Fit, switch on, read

  1. Fit the holder

    Fit the laser holder on the outside of one rear wheel and the wheel cap on the outside of the other, in line with the axle. Confirm steps

  2. Set the reference to front

    Switch on, then long press the reference key until the display icon changes. Front is the laser end. Check it every time you switch on.

  3. Measure

    With the laser dot on, press the measure key. The reading is the width in metres: 1.395 m is 1395 mm.

Quick start card (PDF) A4 sheet, 4 cards A6 card, prints at home. The A4 sheet has four cards to cut.

Apps

Software for race day

RS3 Sync

Available now · Desktop

Sync your onboard video with your AIM data. A desktop tool for AIM data logger users, sold as a one-time purchase.

Visit rs3sync.com

KartTimer

In development · Android first

Track lap times for up to four karts at once, with delta display, auto-split and saved sessions. Built for the pit wall.

Google Play link TBC

Chassis Gauge

Planned

A laser-level chassis straightness checker, to sit alongside the rear track gauges.

Description TBC

Enquire

Talk to us

Questions, orders or a trial unit for your team.

Contact

Email TBC

Include your kart class and rear track width and we will point you to the right gauge.

Where to find us

  • Australian Kart Championship, Bolivar
    Trial units and demos. Date TBC
  • Buy online
    Secure card payment through Stripe. Links TBC