Proform Wireless Scales for Kart / Quarter Midget

Getting your corner weights right is one of the fastest ways to find speed at the track, and the Proform Race Series wireless scale system makes that job easier than it has any right to be. Built for youth karts and quarter midgets, this four-pad setup gives you accurate weight readings in seconds so you can dial in cross weight, balance the car, and stop guessing about where your pounds are sitting.

Each pad measures just 8 by 8 by 1 inch and reads down to two tenths of a pound, with a 300 lb rating per pad and 1,200 lbs of total capacity. That range covers everything from a rookie kart up to national-level cars, and the accuracy holds to within 0.1 percent. In plain terms, when the scale tells you a corner is heavy, you can trust it and make your move.

The wireless part is what sets this system apart. There is no LCD box to fuss with because the pads talk straight to the free Proform Race Series app on your phone or tablet (Apple and Android both). Once you pair, the app shows total weight, front, rear, left, and cross percentages, axle balance, and a reading for every wheel. New for 2026, it connects instantly, so you spend your time adjusting the car instead of fighting the equipment.

When you are done scaling, the pads drop into a foam-lined hard case that keeps them safe in the trailer or on the shop shelf. AA batteries come in the box, so you can pair the app and start weighing the same day it arrives.

What you get

• Four fiberglass reinforced pads, 8 in. L x 8 in. W x 1 in. H
• 1,200 lb total capacity, 300 lb per pad
• Readability down to 0.2 lb, accuracy to 0.1 percent
• Free Proform Race Series app for iOS and Android
• Total weight plus front, rear, left, cross, and per-wheel data
• Foam-lined hard case for transport and storage
• AA batteries included