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Progressive Rate Coil Springs, 1966-77 Bronco, Pair

Progressive Rate Coil Springs for 1966-77 Bronco. Dual-stage design for optimal on and off-road handling. Durable finish.

$234.95

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Additional Information

Additional information

Weight	34 lbs
Dimensions	21 × 10 × 5 in
Choose Color	Duff Signature Blue, Black
Choose Lift Height	Stock Replacement / Duff 4 Link, 1.5" Lift Coil Springs, 2.5" Lift Coil Springs, 3.5" Lift Coil Springs, 5.5" Lift Coil Springs

Reviews

16 reviews for Progressive Rate Coil Springs, 1966-77 Bronco, Pair

Rated 4 out of 5

Todd Zuercher – September 11, 2016

I received my 2.5″ progressive coil springs yesterday – quick shipping after placing the order online. Tonight I calculated the spring rate on them and I think they’re just about what I’m looking for. It’ll be awhile until I get them installed but I’m looking forward to giving them a workout.
Rated 4 out of 5

Mark Vogel – February 1, 2017

Great Experience with these guys
Rated 5 out of 5

James Noles – December 6, 2017

Thank you for supplying the best parts available to make my 74 Bronco Duff Tuff! It’s the only place I shop for all my bronco needs and wants!
Rated 5 out of 5

Shawn Malcom – December 15, 2018

As always great price best customer service and quality parts
Rated 5 out of 5

Austin Cory – December 15, 2018

I’m doing a budget build and these springs are perfect. Most affordable progressive rate springs I could find.
Rated 5 out of 5

Richard Snyder – May 23, 2019

4 Link Springs! great communication through the whole process. Great Product as always.
Rated 5 out of 5

Sean Bell – September 19, 2019

Quick and easy order and a top rate product! The Bronco rides like a different truck now!
Rated 5 out of 5

Kevin Smith – December 26, 2019

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Rated 5 out of 5

Corbin – April 18, 2020

Flex real well, fit well with doing a bronco 44 sas swap on my truck.
Rated 5 out of 5

Jerry Richards (verified owner) – August 22, 2020

Ordered online got them a couple of days later. Bronco rides alot better now
Rated 5 out of 5

Jacob Waring (verified owner) – April 18, 2021

I just recently bought the 5.5 inch for my SAS Tahoe. They fit perfectly and the ride height is just how I wanted it. There is a ton of flex and the ride quality is superb even without a front sway bar. Would recommend to anyone planning to SAS using a 66-77 bronco front end.
Rated 5 out of 5

Ron (verified owner) – June 28, 2021

much smoother ride than my old Rancho Lift
Rated 5 out of 5

Bill (verified owner) – February 22, 2022

Purchased 3 1/2” front springs. Excellent quality, excellent ride improvement over the 90’s lift that was on the truck. Highly recommend.
Rated 5 out of 5

Johnathan McCall (verified owner) – May 4, 2022

Took off some other brand 5.5” springs and put on 3.5” Duffs Springs. Love the ride these give. Not been off-road with them but on the road it’s a good smooth ride and handles great.
Rated 5 out of 5

tony-6356 (verified owner) – July 10, 2023

The springs gave my front end a whole new look and a better feel on & off the road!
Big time upgrade!
Rated 5 out of 5

Eric T (verified owner) – January 6, 2024

I last replaced my front coils with Duff springs some 37 years ago on my 70 Bronco. And I bet I would not have needed to replace them if not for a higher desired lift. So I knew there was only one brand I wanted to buy. I think progressive is the way to go (rather than linear) and these were consistent such that they fit just the same on both left and right. Great lift and ride.

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James Duff Inc. specializes in precision-engineered suspension, steering, exhaust and off-road components built exclusively for 1966–1996 Ford Broncos.