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We are Proud to offer products that are Made in the USA.


Our tools are unique in that they simultaneously align and “square” the car, insuring that the rear axle is running true and parallel to the front axle. Since our strings attach to the vehicle, they move with it when adjustments are made, the vehicle can be rolled to settle the suspension without the hassle of gauge recalibration. See which kit suits you best from the options below.



Choose the kit that suits your needs best. Our basic kit measures toe on all four corners of nearly any vehicle, with bundled upgrades available for savings.


Our tools are designed to last a lifetime. If a component is damaged or lost, you can purchase spare parts here to keep you running up front.

Customer reviews

Customer reviews

Assembly, setup, and measurement are quick and easy. You arrive at a measurement faster than conventional off-vehicle systems, and I think this system is faster and more accurate than laser systems.
— Steve S.


"I designed SmartStrings 26 years ago, to perform precise alignments in my garage at home. It became too troublesome to make a change to my car, then take it to the alignment shop in the morning, work all day, then bust my ass to get back to the shop before they closed, and so on."

"So one weekday while watching Indy Cars testing at Laguna Seca in the early '90's I saw them align their cars with strings on fixtures. I realized I needed to do the same at home - so I did. People saw them and wanted a set, so I designed them to be completely universal and usable on any car, anywhere."

"The resulting design was effective, and over the years SmartStrings has developed a broad following; from dealerships confirming calibration of high-dollar alignment racks, to track days, and professional teams around the world. And yes, when I was the chief engineer at Flying Lizard we used both gauges - they still do."