Great kit, has everything you need

I was skeptical that a tiny part could make a difference. I have a 2000 7.3 with 215,000 miles. I thought it ran well before this upgrade. Now, it is a different truck entirely. It has more power and better sounds overall. I used the gold spring. It's easily installed, but watch dropping the parts in the valley. I had some diesel on my fingers, and the housing and spring went flying as I was pressing to install the screws. Luckily, I was able to find them.

Have my 7.3 a new life. Better throttle response and faster to start. I think my old springs we very tired after seeing how much better it runs.

Used the middle Goldspring. What a huge improvement it made.!!

Easy to install

This is the best value in the 7.3L world. Honest pricing and fast shipping. Had tracking in 5 hours after placing my order. Better pedal response, and it idles smoother as well.

Definitely ram smoother and stronger felt a difference instantly

I changed this out and I cant say that I had a huge surge in power, but I can tell a bit of a difference. This needed to be done vs waiting and its pretty inexpensive. The customer service is really GREAT! If I have a question they get back to me quickly. I am the stage of life now that the customer service is just as important as the product and the price. Really appreciate Riffraff Diesel! Thanks Clay!!!

I ended up getting the FRx later and it came with this kit and I used the recommended gold spring. Noticeable improvement.