Collection: Longacre Racing Setup Tools

Who Longacre Racing is

Longacre Racing Products makes setup tools and equipment for racers. Its About page says Jack Jaynes founded the company in California in 1978, that it later moved to Washington State, and that it joined AFCO Performance Group in 2017. The contact address on its site is in Boonville, Indiana. Longacre's catalog covers race scales (its About page calls them the marquee product line), chassis setup tools such as caster/camber gauges, toe and stagger tools and spring rubbers, tire pressure gauges, gauge and switch panels, and specialty tools.

Longacre is a tool brand, not a parts brand. Nothing on this page bolts onto your car as suspension. These are the tools you use to measure and set the suspension you already have, whether that's a circle track car, a drag car or a track-day build on coilovers.

Longacre tools we carry

Counts and prices are from our store in October 2026.

We don't list Longacre's race scales themselves right now, only the ramps and levelers that go with them.

How to choose between Longacre's tools

Caster/camber gauges: digital or bubble, and how they mount

A bubble gauge is simple and never needs batteries. Longacre's bubble gauges on our store cost $144.99 (52-78250, no adapter) and $148.74 (billet gauge with case). Digital gauges cost $238.74 to $352.49 and are quicker to read. The bigger question is how the gauge attaches. Longacre sells threaded hub adapters for GM 3/4 inch 20 thread and Wide 5 hubs, a QuickSet adapter, Dunlop-style gauges including a 22 inch version, and a gauge with a magnetic adapter. Match the mount to your hubs or rotors before you pick a gauge, and buy the "no adapter" versions only if you already have one.

Toe plates and turn plates

Toe plates sit against the tire sidewalls so you can measure toe with a tape. The standard set is $82.49 and the deluxe set is $178.42. Aluminum turning plates ($928.74) let the front tires turn freely, which you need to measure caster properly by sweeping the wheels.

Ride height and leveling

All setup numbers depend on a level floor and a repeatable ride height. The mini chassis height checker ($92.49) and long and short height gauges ($158.42) are simple tools. The laser tools ($437.55 and $439.38) both check chassis height and level a setup pad, with matching targets for $31.24 and $32.12. If you're lowering a street car, our ride height and wheel fitment calculator helps plan the target height first.

Spring rubbers

Spring rubbers are a quick way to add rate to a coil spring without swapping it. Longacre's are color coded by hardness, from Yellow 5 and Clear 10 up to Blue 50 and Black 70 for standard coil-over springs, plus large space and deep groove versions for 5 and 5.5 inch springs. Use them for small tuning changes, and change the spring itself for big ones. Our spring rate calculator and spring rate explained cover the basics.

Shock inflators and spring testers

The 300 psi shock inflators ($139.99 to $215.79) set gas pressure in rebuildable shocks, and the 1 inch unload collar ($33.17) helps when working on coilovers. Spring testers are shop tools: the billet digital coil spring tester is $1,995.33 and the air-powered bump stop and coil spring tester, rated to 4,000 lb, is $3,318.14. They let you check that springs and bump stops match their stated rates.

Fitment

Most Longacre tools are universal. The exceptions are adapters, which must match your hub thread or style, the deep groove spring rubbers sized for 5 and 5.5 inch springs, and the snap-in bump steer adapter for Wilwood Starlite hubs with 5/8-11 threads. Check those details on each listing.

Longacre compared with alternatives we carry

SPC Performance is the only other alignment tool brand on our store. Its FasTrax camber caster gauge ($460.99) is built for off-road trucks with 13 to 17 inch wheels and tires up to 44 inches, and it also sells a $102.99 camber tool. For a race car or track car, Longacre's lighter gauges and wider adapter choice are the better fit. For a lifted truck, look at SPC Performance.

Warranty terms are set by each brand.

Put the numbers to work

Once you can measure, you may find the car needs more adjustment than it has. See alignment and camber kits, camber plates, coil springs and bump stops.

Popular picks

• Longacre Digital Caster Camber Gauge 52-78290, $274.99: the all-round gauge for home setup.
• Longacre Caster Camber Gauge 52-78250, $144.99: bubble gauge if you already own an adapter.
• Longacre Toe-In Plates Deluxe 52-79505, $178.42.
• Longacre Chassis Height Checker Mini 52-78318, $92.49.
• Longacre Coil Over Spring Rubber Red 40, $40.64: a mid-range rubber for fine tuning.
• Longacre Digital Shock Inflator 300 psi, $139.99.

Related guides

• How to adjust coilovers
• Bump steer explained
• Wheel offset explained

Sources

• Longacre Racing home page
• Longacre Racing: About us