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It's Always Spring-Time at Donovan Spring!

Your One-Stop Spring & Suspension Specialists

Donovan Spring Co., Inc.
6 Enterprise Drive
Londonderry, NH 03053
(603) 627-9800



Coil Springs


  • Additional Load Handling Capability
  • Improves Handling & Ride quality
  • Maintenance Free
  • Reduces Driver Fatigue
  • Ideal for Motorhomes, Plows, and Diesel Vehicles

We offer Dayton Parts heavy duty coil springs and Tuftruck (TT) heavy duty coils.   The Tuftruck (TT) brand coils are an ideal solution to under-sprung or sagged front ends on domestic light trucks and vans.  Whether you're adding a snowplow or a heavy-duty bumper with winch, a Tuftruck (TT) coil spring is an excellent solution.

Heavy Duty Coil Springs are custom designed to give you additional load handling capability per pair with a maximum of ½ inch increase in ride height at zero additional load.  These HD Springs are the only practical helper spring alternative when shock absorbers are mounted inside the coil spring and are an excellent choice for vehicles equipped with diesel engines or snow plows. HD Coil Springs also require no maintenance making them an excellent load handling solution for fleet vehicles, pickups, vans and motorhomes. Super Duty Coil Springs improve the handling and ride quality of heavily loaded vehicles, thereby reducing driver fatigue and increasing safety and efficiency.


High Quality Replacement coil springs for Auto, Trucks, Vans.  To Order rear or front coil springs for your vehicle, please contact us.

We also carry standard duty coil springs for cars, trucks, and vans.

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