James Duff Inc 6609 Bronco Lane, Knoxville, TN 37921

"I purchased the duff extended radius arms for my 79 bronco and they check all the boxes when it comes to what I was looking for! Normally aftermarket parts as such will fight you to the end on installation having to tweak and pry on every piece installing. Not these! It fit, finish and build quality is top notch. Tolerances were spot on and went together seamlessly. If you are considering Duff radius arms then pull the trigger! You won’t regret it!!!!"

"I have bought several things from them and they’re really helpful if you aren’t sure exactly what part you are needing. They helped get my 74 Bronco driving straight down the road and not wandering like it did for years. I am actually not afraid to drive it now that I put on the heim joint steering system and the steering stabilizer. I will definitely be buying from them in the future."

"I have ordered parts from Duff for years. Always courteous and helpful. Ordered a new custom exhaust system for my ‘69 Bronco and it was at my door, with all hardware, just 4 days after I ordered it. Customer for life"

"I was totally blown away by my experience dealing with James Duff. The people I talked to were knowledgeable helpful and friendly. Not only that they called about 2 weeks after the order just to check on things. I'm putting together my next order right now!"

"I have a 1971 Ford Bronco. It had duel shocks in the front and back but was stock height. I wanted to lift it 2 1/2 inches so I could run 33x12.50 tires. I decided to go with the 5000A kit that James Duff offers. I like the fact that I can upgrade the suspension components with this kit. While installing the suspension kit we found out the tie rods needed to be replaced. We decided to go with the Heim steering kit and a front sway bar. When I got it back from the shop it drove completely different. It no longer had the stiff ride that was typical of the old suspension. The new suspension offered a much more modern ride that was softer yet firm. It really handles nice in the curves as well. I also like the way it looks with the lift. I still need to purchase new rims and tires which is on my list."