1973-1987 Chevrolet Square Body Classic Plus EZ Air Ride Builder’s Kit

 “The kit price includes free shipping to the lower 48.” 

$2,595.00

Category:

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The Classic Plus Builders Kit is designed to improve your C10/Suburban with greater stability, dynamic driving performance, and a distinctive stance. It allows for effortless manual suspension adjustments, featuring our dual-needle air gauge and paddle valve panel for precise air pressure monitoring in the bags. Tailored for DIY enthusiasts, this kit eliminates the need for complicated components such as self-leveling sensors, computers, wiring, and calibration. We refer to our user-friendly Classic Plus gauge panel as “driver’s seat calibration,” allowing you to adjust your air ride suspension using simple gauge readings. With a touch of your finger, you can easily adjust the pressure using the switches, similar to monitoring your speed with a speedometer and controlling acceleration with the gas pedal. The Classic Plus gauge panel functions similarly; just adjust the paddle valve lever to change your vehicle’s stance while monitoring the gauge needles to reach your desired pressure and ride height. Enjoy effortless adjustability at your fingertips!
With the Classic Plus gauge panel, the paddle switches control the airflow from the tank into the airbags through the switches and release air from the bags back through the exhaust port built into the switches. If you prefer not to reach over to a permanently mounted gauge panel or hear the hissing sound of air as it exhausts back through the paddle switches, our Elite kits will eliminate the airline plumbing from the bags into the cabin, as well as the need for numerous connections required behind the gauge panel, streamlining your setup for an even more efficient installation.

Our gauge panel features a four-corner control system, often referred to in the community as FBSS (Front, Back, Side-to-Side). While many believe they don’t need independent four-corner control—viewing it as a flashy enhancement for side-to-side “shows” at the stoplight—our system offers much more than just a showing-off factor. Many 1973 through 1987 Chevy Square Bodies were manufactured without factory sway bars. Even though this generation was designed with more driver comfort in mind than the earlier models, many were still stripped-down utility or work trucks where enhanced handling through stabilizer bars was not standard. This design limitation, combined with the “Stacking Effect,” leads to the notorious Square Body Lean. In this generation, the weight is concentrated on the left by the driver-side frame-mounted fuel tank, the steering assembly, the battery, and the driver’s own weight. This creates a significant weight imbalance that a basic front/rear system simply cannot fix. Our four-corner control system significantly improves stability at each corner of your Square Body, effectively reducing body roll during cornering and enhancing overall handling. By allowing you to adjust each bag independently, you can compensate for that heavy frame-mounted tank and off-center weight. Whether you’re accelerating up a freeway on-ramp, hauling an uneven load in the bed, or just laying it out at the next Cars and Coffee, the adjustability provided by our gauge panel ensures a perfectly level stance. Tailor your ride to your unique preferences while effectively combating the dreaded Square Body Lean.

WHATS INCLUDED: Engineered for the Square Body lifestyle, our exclusive EZ AIRRIDE Airbags are specifically designed for 1963–1972 Chevy C10s and 1973-1987 Chevy Square Body’s. Our 2600# series bags outperform the competition by offering significantly more stroke than the industry standard. With a collapsed height of just 2.8 inches and an extension of 12.5 inches, you get nearly 10 inches of usable stroke. This increased travel allows for lower operating pressures, resulting in a smoother, more dynamic ride quality without sacrificing lift. Whether you’re dropping in a heavy cast-iron 454 Big Block, tucking 20-inch rims, or hauling a Harley in the bed while towing a boat—our bags are built to handle it all. Each 2600# series airbag boasts a massive max load rating of 3,055 pounds at 100 PSI. These springs provide the strength needed to increase your load capacity, prevent your pipes from scraping the driveway, or simply let you lay it on the the lawn at the show. Experience the difference and enhance your Square Body’s ride quality by ditching those half-century-old factory coil springs.

Installing front bags and brackets simplified: Our Square Body/C10 2600 series bags and front brackets require nothing more than a socket set and drill for a hassle-free installation, making them the simplest air ride vehicle setup. It’s worth noting that the Square Body/C10 is one of the few GM byproducts where the front shocks are factory-mounted outside the coil springs, eliminating the need for shock relocation. This means no welding is required, further simplifying the installation process. If you’re using or planning to use front aftermarket tubular control arms, don’t worry. These lower brackets are completely compatible with most aftermarket tubular control arms. However, please note that you’ll need to remove the entire bump stop from any style lower control arm to ensure sufficient air bag clearance.

Our front bolt-on airbag brackets feature powder-coated finishes to enhance durability and provide added protection. All necessary airbag/bracket hardware, including nuts, bolts, washers and the required 3/8″ all-thread is included.

Our rear bag brackets have a unique design where they are welded to the axle housing’s underside. This design positions the bottom of the air bag at the same level as the axle’s bottom. Allowing the upper bag bracket to weld to the frame. This is different from the traditional bag brackets that are placed on the axle housing’s top, positioning the air bag several inches above the axle. We don’t provide these kinds of brackets because the upper air bag bracket requires welding to a large notch. This usually means cutting the frame in half and making a hole in your truck bed for clearance. If you plan to do this, our under-the-bed style air ride kit might not be the right fit for you.

NO SHOCKS INCLUDED: WHY NOT? 🤷‍♂️   When seeking to install airbags onto your  Square Body/C10, many companies will push you to buy their stylish, brushed aluminum, foxy looking overpriced shocks. All the while emphasizing the necessity of fancy dropped shocks for an air ride system. The reality is that a superior airbag is shouldering 90% of the suspension work. The shock is merely a standby damper for those unexpected encounters with large potholes or when you’re speeding over a set of railroad tracks at 45 mph. That’s the reason we don’t include shocks with the Square Body kits. We advise you to simply visit your favorite auto parts store and request the most affordable STOCK gas shock suitable for your specific vehicle model. Put the $300.00-$400.00 we saved you back into your wallet.

Keep in mind, that this advice may not hold true for every airbag you come across online, as not all airbags are produced to our exceptional standards. Let’s say you’ve stumbled upon some used bags on Marketplace, or a new set from a different brand on Amazon/eBay that only compresses down to 3 inches and expands to a maximum of 7 to 7.5 inches. In such a case, you’re left with a mere 4 inches of usable stroke. Picture yourself driving your heavy Chevy with an LS swap, equipped with 20″ rims, and your car show travel buddy happens to be a former linebacker. In this situation, a mere 4 inches of stroke would indeed be laughable. You’d have to resort to maximum pressure in the bag just to ensure enough tire/wheel well clearance for cruising. This is precisely why other companies are eager to sell you an expensive, dampening drop shock. Their aim is merely to offset the excessive inflation of a bag that provides very little stroke, resulting in a rigid ride.  More stroke less filling

AIR TANK: Introducing our Square Body/C10 specific air tank! Because of it’s ideal size this 5-gallon steel tank is tailored for convenient mounting under the bed of your Square Body/ C10. Measuring approximately 30″ in length, 6″ in diameter, and a height of  7.25″ it strikes the ideal balance between ample air storage and a space-saving design. Enjoy optimal performance for your trucks air ride system with our discreet, low-profile air tank.

To achieve the ideal tank placement, the spacious underside of the 63 through 87 Chevy truck models offers several options.  Most truck builders choose to relocate the fuel tank from its original position behind the seat inside the cab, or from the outside of the frame rail to underneath the bed behind the axle, prioritizing safety and efficiency. It is important to acknowledge that this configuration may not allow enough space for an air tank to be placed inside the frame, alongside the fuel tank. As a result, we recommend mounting the tank directly in front of the rear bumper, between the frame rails, where the spare tire would traditionally be stored. This placement ensures optimal functionality and positioning.

In the event that your Square Body/C10 is equipped with a pro touring 30 gallon fuel tank, which is currently crammed tightly between the axle and rear bumper, leaving no space whatsoever. There is a viable alternative, you can opt to mount this tank along the frame, either under the driver’s or passenger’s door. In order to secure the tank in any of these locations, you will only need to fabricate a couple of L-shaped brackets to keep the tank in position. If none of these options prove successful, another option is to mount the tank in the bed, perhaps within a toolbox, behind the seat, or any other suitable spot. Tanks! 👌

Air Compressor: Introducing Our premium  454ss compressor, Boasting a maximum working pressure of 200psi, and recognized for it’s efficiency in low amperage usage. Crafted for durability and exceptional airflow performance, this work horse is the ideal choice for any onboard air ride system. Every 454ss pump includes a special set of anti-vibration pads to reduce noise and vibrations, ensuring a SUPER SILENT operation every time. Each compressor is accompanied by a sleek anodized black stainless steel braided leader hose featuring a built-in check valve for effortless connection to the air tank.

Our 454ss Compressor is oil-less and equipped with a 12v permanent magnetic motor for efficient and reliable operation.  It has a Built-in thermal overload protector incorporated to safeguard the compressor from overheating even in the most challenging operating conditions. With it being oil-less you  can mount it in any direction or position. The only position we do not recommend is an upside-down mount, since heat tends to travel upward, and does not dissipate well in the motor housing.

Included with all 454ss compressors: our EZ AIRRIDE™ comprehensive wire care package containing all necessary items for installation of your compressor keeping it happy for years to come. This includes a premium 8g wire roll to conveniently link the compressor in your trunk, or under the bed to the battery way up front, a 40 amp fuse with a protective fuse holder, a 30/40 amp relay with a color-coded plug-in relay harness for simple setup, and a new nickel-plated top post battery terminal that will accept the 8 gauge wire. With these components provided, you can trust your air ride system to perform reliably and efficiently.

  • Key Features of the Compressor:
  • Chrome body
  •  12V permanent magnetic motor
  •  Maximum pressure: 200 psi
  •  CFM: 1.76
  •  Maximum amp draw: 20
  •  Duty cycle: 100% @ 100 psi, 50% @ 200 psi
  • Fill rate (5 gallons): 0-200 psi = 5 minutes 30 seconds; 165-200 psi = 1 minute 35 seconds
  •  Anti-vibration pads
  •  1/4″ leader hose with built-in check valve
  • Remote air filter

The Gauge Panel: Our Classic Plus™  gauge panel serves as the primary control center for your air ride system. The Classic Plus gauge will offer ease over excess™  This is where you adjust each bag, equipped with four paddle valve switches and two glass gauges containing dual needles to cover both front & rear air bags. The panel is designed for smooth and simple control™  – there’s no need for fancy finger maneuvers to control the paddle valves, so you don’t need to be a finger acrobat. Each paddle valve is strategically positioned at both ends of the sleek gauge panel for ease of adjustment. You can effortlessly use your finger or thumb to raise the front or back of the vehicle uniformly. The panel’s four-corner control allows for fine-tuning each corner, or just the front, back, or side to side. This comprehensive control over your suspension lets you modify it to your exact liking with a mere touch of a finger.

  • Gauge Panel Features:
  • Aluminum Panel with 4 paddle valves
  • Dual needle glass air pressure gauge: 0-200 psi
  • Brushed aluminum dial with bright white L.E.D. bulbs & power harness
  • All metal casing with black & orange needles

The Air Fittings: Our genuine and easy-to-use air ride brass fittings are certified by the Department of Transportation, ensuring their durability and strength. Compared to plastic and metal fittings, our brass DOT fittings are more durable and stronger, capable of withstanding higher pressure levels without cracking or stressing. Their high resistance to corrosion makes them perfect for long-term use in air ride suspension systems exposed to moisture and other elements. These certified brass fittings are designed and tested to meet specific performance standards, guaranteeing reliability and consistency in their operation. With a reduced likelihood of failure or leaks, they provide a secure connection for your air ride suspension system.

Brass Fittings Included with the Classic Plus Kit:

  • (4) 1/4″ x 3/8″ NPT Air bag fittings: (2) straights for the front (2) 90’s for the rear
  • (2) 1/4″ x 3/8″ NPT Gauge fittings: Mounts to air tank for air supply to gauge
  • (1) 1/4″ Spare Air Quick Connect w/adapter: Mounts to air tank
  • (1) 1/4″ female Air Coupler w/ Tire Schrader Valve: For Roadside Air
  • (1) 165 on / 200 off  1/4″ Sealed Pressure Switch w/lead wires: Mounts to tank
  • (1) 1/4″ Butterfly Petcock: Mounts to underside of air tank
  • All Brass 1/4″ PTC Classic Plus Gauge Panel Fittings: Connects air hoses to gauge 

Weight 112 lbs
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