Product Code: 5120B

Heavy Duty Lower Coil Spring Retainers, 1966-77 Ford Bronco, Pair

$93.95

Availability: 36 in stock

(46 customer reviews)
Installation Note:
Installation Note:

For our Big Bronco and FSB we have updated this product see #5122

When installing our lower coil retainers you will need to upgrade your bump stops. 

For a factory-style bump stop see #6300

For a taller bump stop, you will need to purchase #6310. These will be mounted to the frame which will require drilling.

You may consider our complete bump stop kit for the front and rear. More information here.

Had a coil pop out under maximum flex? We did! So WE designed the heavy-duty replacements to hold your coils in place securely. This allows full flex (of even the last wrap!) without fear of your coil popping loose! Our simple, but effective, one-piece design replaces both of the OE pieces. It sits flat on top of the radius arm or our 4-Link truss, also reducing coil bowing. Combine with our axle wedges for axle conversions. Stitch welded and laser cut for drainage. Zinc plated for rust resistance. Fits '66-'77 Early Bronco (5 1/2" diameter) Coil springs. Our passenger-side retainer has been offset for full coil engagement, we've marked on the retainer plate so you know exactly where they belong when installed. These will ensure a long-lasting product with optimal coil engagement compared at full droop to others on the market.

These will work for our t-rex arms, extended radius arms, or the stock (oem) radius arm.

Compatible with a Dana 60 front axle with the use of our full-width or solid axle swap components. 

Want to know what's involved in the installation? Download instructions here.

Made in the USA
Prop 65 Icon
Weight 5.3 lbs
Dimensions 6 × 6 × 2.25 in

46 reviews for Heavy Duty Lower Coil Spring Retainers, 1966-77 Ford Bronco, Pair

  1. Michael Wilson (verified owner)

    these lower coils retainer cups are awesome. i used them to put a fullsize dana 44 on my early bronco

  2. Harley Aigner (verified owner)

    Looking forward to the hassle free install of these cups on my 78 F-150 restomod. Well constructed and marked L and R.

  3. Nicholas Colvin (verified owner)

    Great part, have been on my truck for over a year now, work great and still look new.

  4. Jason Thompson

    Great product with an excellent fit!

  5. Justin Scoggin (verified owner)

    Great quality item perfect fit on my 78 bronco

  6. Sam Melo (verified owner)

    Excellent product. I had installed the front anti-sway bar kit and did not like how the stock cups on my ’69 Bronco did not sit flat on the sway bar brackets. I installed these because they are nice and flat which allowed me to get the proper torque on the hold down bolts. An added bonus is how much easier the springs are to install with these over the stock two piece cups. All I had to do was mount the cups without the springs, then just twist the springs in. They even added drain holes and marked them for driver and passenger side, small details that make a superior product. Highly recommend.

  7. john clemenzi (verified owner)

    Nice set of aftermarket cups! Fast shipping great quality.

  8. Tony Blake (verified owner)

    Parts shipped next day. Glad I ordered the heavy duty coil cups. They are a great upgrade over the stock coil cups and a perfect fit.

  9. Charles Martin (verified owner)

    Quality and fit are perfect…

  10. John Rager

    Much better than the original rusted ones I replaced.

  11. Timothy Bjork

    these HD spring retainers are not only made beautifully, but makes the rig look so much better and when I put on new t-rex arms why bother putting old stuff back. they work great.

  12. Roman Blair

    My experience with Duff, was awesome. They called me to verify my order, to ensure accuracy. When I had a question of what parts I needed to do a SAS, they provided me parts description and item numbers to make my shopping easier and more efficient. Great Job

  13. Sean Lord

    I’m glad I decided to go ahead and replace my body mounts while doing the lift. They fit great and improved the ride of my B2. Would definitely recommend to anyone else looking to tackle this project.

  14. Blake Rodriguez

    High quality. Fast shipping. Some good stuff right here.

  15. Ronald Bjorkland

    These things are tough.. they’re a one piece design rather than the factory two piece design. You’ll never have to worry about your spring slipping out of place. The steel is pretty thick and coated so you won’t have to worry about rust or corrosion. There are also drain holes so water can’t get stuck in them. I’m glad I bought these. Pretty good price also.

  16. Todd Minutella

    Bought a pair of the Hd spring buckets for front a bit a go and was happy with them so bought another set for my rear four link set up great workmanship love them

  17. Todd Minutella

    Beefy beefy beefy my 50 yr old ones have been beat on and bent many times much improved upgrade nice job in design

  18. Dennis Ordyna

    Received my coil spring retainers super fast. First things I noticed are the coating and welds are awesome. Great product and gonna last a long time. Duff for the win once again Gonna look great with the rest of my Duff Tuff stuff

  19. Brian Rasey

    Never worry about my coils popping out like all the jeep guys!

  20. Jason Collins

    These spring retainers look better than stock and they are really strong I’ve had them for about 3 years. They look about as good as they did when I put them on. Duff Tuff!!!

  21. Troy Holmberg

    Nice product as usual from James Duff. Had my truck for 35 years and always used James Duff.

  22. Ryan Terpstra

    Hard to find quality crafted parts these days, was very impressed with the quality of the welds and overall craftsmanship. I installed these retainers in conjunction with the stage 3 extended radius arms. Monster Mike was very responsive when I had questions. Well worth the investment.

  23. Lee Rhodes

    Love their products.

  24. Jonathan Melton

    These are super beefy coil cups! My old coil cups were all pitted out from rust, so upgraded to these. I was actually shocked at how strong they were. And, they definitely hold my spring in place better than the stock cups.

    They are so tight I had to really work my spring into place, and I had to remove my stock bump stop on the driver side. But i feel like it was well worth it.

  25. RICHARD SNYDER

    Another great product from the Team at James Duff. these look awesome. wont have to worry about having to replace these ever!!

  26. Francis Alvarado

    Product came when promised, parts are nice and beefy looking. Not sure why this can’t be packaged into a kit for IFS swaps. Will do business with you again in the future

  27. williamdyer@charter.net

    The lower coil retainers are a great well built replacement for the stock two piece set up. well priced. cheaper than buying the four piece set. and will last a lot longer.

  28. Alexander Reed

    Looks good and fits right

  29. Austin Cory

    I had to paint my axle so it didn’t look crappy next to these

  30. bill noelle

    As Always Prompt efficient service and excellent product. I have been a customer since 1974

  31. Justin Chapman

    Seem to be well made and fit good and snug around the coil spring. Was easy to install all but putting it on the coil itself. Had to hammer it on. But I know it’s not coming of. Lol

  32. Pade

    If I ever call with a question it’s answered and I’ve had them talk me throw steps away to accomplish my goal with my project. Highly recommend jd parts for us Ford guys.

  33. cavin mcpherson

    Top notch. Haven’t installed yet but already impressed. Much better than stock.

  34. Don Bright

    Great parts and fast delivery

  35. Jared

    Top notch quality product! Excellent customer service, when I purchased my lower pockets I accidentally bought two sets. Only needing one set luckily they phoned me to verify my order, so top notch customer service for noticing the little things that can make the difference.

  36. Adam Hunsinger

    One thing I like is it is a one piece design will hold spring much better then the 2 piece.

  37. randy mcfarland

    Again very happy, a very nice product would recommend these items and James duff to everyone

  38. Marc Martin

    The coil buckets look good and fit great.

  39. barney byrd

  40. Mark G.

    Another great product out of the Duff crew! Others may copy them but they are the people coming up with new and innovative parts. Support the innovators and not knockoffs in this world!

  41. Bolton Kelley

    James Duff is the Super Mule is Bronco torque! I am currently configuring dual triangulated 4-link on my Bronco and I use James Duff coil spring mounts and retainers on the front and rear. I am doing away with the dreaded axle swing when the trac-bar reaches nearly perpendicular with the ground and the front axle swings to the side of the vehicle.

    Don’t Bronco without the Mule!

  42. anthony adams

    well built heavy duty, the mounting holes are centered and not offset as on the original coil retainers and they are a tad bit bigger doesn’t fit stock coils that great but I think I’ll try to use them. I needed new retainers and they were cheaper than stock type.

  43. Martin Hassenger

    Good quality, nice finish. But I’ll be throwing away the grade 5 hardware and going with grade 8. Why offer HD lower spring buckets but send light duty hardware? The grade 5 would probably never fail but why take the chance. James duff has great products and great customer service, I always check their website when I’m looking for good quality aftermarket parts for my bronco. Thanks.

  44. Robert Grace

    Have purchased stage 3 long arm kit for Ranger with a solid axle swap from a 71′ Bronco and the heavy duty lower coil retainers (bullet proof) and Always a great experience and easy too. Fast shipping and quality of product that’s unsurpassed. Keep up the good work. Thanx again. Bob G.

  45. Mike French

    As always my parts arrived quickly and were a very quality product. Thank you to the Duff team, you guys are great!

    frenchy

  46. Richard Bailey

    Quick shipment, great part… Very happy.

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