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CP Spring

Custom Leaf Spring Solutions for Service and Work Trucks in Oklahoma

Custom spring work for service trucks, food trucks, walk-in vans, package cars, tool trucks, farm trucks, and other work vehicles across Oklahoma that need to sit and handle properly.

Our Services

CP Spring focuses on custom and bespoke spring work for service trucks, utility bodies, and other work trucks that need suspension support built around the job they actually do.

Service Truck Suspension Corrections

  • Suspension evaluation for crane trucks, mechanic trucks, mobile welding rigs, and other heavily upfitted work trucks.
  • Corrections for leaning, squatting, or poorly balanced rear suspensions.
  • Practical recommendations for trucks that need to carry weight safely while working every day.
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Leaf Spring Replacement & Repair

  • Broken leaf, worn main leaf, and full spring pack replacement.
  • Add-a-leaf installs and side-to-side corrections for uneven loading.
  • Custom leaf spring builds matched to the actual load on the truck.
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Custom U-Bolts, Bushings & Suspension Hardware

  • Custom U-bolts bent and fitted for the application.
  • Spring bushings, shackles, hangers, and center bolts serviced as needed.
  • All suspension mounting hardware for commercial trucks and work vehicles.
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Air Ride Suspension Repair

  • Air bag replacement and height control valve service.
  • Leveling valve repair and air line diagnosis.
  • Ride height correction for commercial trucks with air ride systems.
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Problems We Solve

CP Spring helps work trucks sit, carry, and handle better when permanent equipment, uneven loads, or years of commercial use have overwhelmed the original spring setup.

Trucks leaning or sagging to one side
Suspension issues caused by cranes, welders, compressors, service bodies, refrigerators, and tools
Rear suspension sag from permanently uneven loads
Bottoming out or riding on overload springs under heavy equipment or cargo
Poor ride height after upfitting or body installation
Service trucks that no longer sit level after years of use
Leaf springs worn out from commercial use and heavy loads
Steering and handling concerns related to suspension imbalance
Weight distribution issues on work trucks, food trucks, and walk-in vans
Suspension upgrades for contractor fleets, tool trucks, package cars, and utility vehicles

Frequently Asked Questions

Common questions about custom spring work, service truck suspension, and ride-height corrections.

Can a leaning truck, or a truck with a heavier load on one side, impact steering?

Yes. Trucks with permanently uneven side-to-side weight; such as cranes, welders, compressors, or service bodies; can experience changes in ride height, suspension angle, and axle position that may slightly influence steering feel and handling characteristics.

Leaf spring suspensions operate through an arc rather than strictly vertical travel, so changes in spring height can also create small fore/aft axle movement as the suspension geometry changes.

The diagram below exaggerates this effect for illustration purposes. In most cases, the majority of the suspension change occurs vertically, while only a small amount affects axle position.

Truck suspension steering geometry diagram

Diagram exaggerated for illustration purposes. Most suspension movement occurs vertically, while only a small amount changes axle position.

Suspension modifications are typically designed around the truck’s loaded working condition so the vehicle performs properly once equipment and operating weight are fully applied.

Can a truck with more rear weight than the manufacturer intended affect steering?

Yes. Excess rear weight can reduce the amount of weight carried by the steering axle, which may cause wandering, inconsistent steering feel, poor handling, and increased safety concerns.

This is especially common on service trucks with cranes, welders, compressors, or other permanently mounted equipment.

Properly designed leaf spring and suspension solutions can help redistribute load, improve ride height and suspension geometry, and restore more stable steering and handling characteristics. This may also impact steering tire wear.

What makes CP Spring different from a standard repair shop?

We focus on custom spring and suspension solutions for work trucks. Instead of only replacing parts, we look at how the truck is loaded and used, then build or modify the spring package to better match the job.

Do you work on service trucks with cranes, welders, compressors, or utility bodies?

Yes. These trucks often carry permanent weight on one side or behind the axle. We can evaluate the weight bias, ride height, and spring setup, then recommend a custom spring solution.

Can you help if my truck leans, squats, or sits unevenly?

Yes. Leaning and squatting are common on upfitted work trucks. We can inspect the suspension, spring eye geometry, shackles, bushings, U-bolts, and spring pack to determine what needs to be corrected.

Do you build custom U-bolts?

Yes. We can bend and install custom U-bolts for many truck spring and suspension applications.

Should I replace the springs or modify the existing spring pack?

It depends on the truck, the load, and the condition of the existing springs and hardware. In some cases a spring modification is appropriate; in others, replacement or a more complete suspension correction is the better option.

What information should I have ready when I call?

Helpful information includes the truck year, make, model, body type, equipment on the truck, what problem you are seeing, and whether the truck sits unevenly when loaded or unloaded.

About CP Spring

CP Spring is part of the CP family of businesses, providing custom suspension and leaf spring solutions. Our team focuses on practical spring and suspension corrections for service trucks, utility bodies, crane trucks, and other work trucks that carry permanent equipment loads.

Contact Us

We’d love to hear from you! Please reach out with any questions or requests.

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