Review on 🔧 Optimize your GM G30/G3500 Front Suspension with Timbren GMFK15A Enhancement System (03-09) by Brandon Havlicek

I have an unusual use for them. I don't plow and don't have a steel bumper like most who buy them. Instead, I have a Yukon Denali 02 that has been lowered slightly with the control levers. Aftermarket levers are not known to come into contact with the OEM jounce bumper, also known as a jounce bumper in GM terms, as they have no overlay pad and compress. Although I handled better because I was lower to the ground, I felt like I had the same if not more body roll compared to the factory because I wasn't making contact with the stopper. And that's thanks to massive stabilizers and Hellwigs polypropylene bushings. A quick call to Timbren, who by the way had a great support team, gave me the dimensions of the Aeon nib (the product's own name) and on paper it was very close to where it just touched the control stick. I bought it and luckily it barely touches the control lever. My steering feel has improved. I drive my hog very hard so the improvement in handling is very welcome. Much less body roll. The ride is a bit firmer (which I prefer), but I won't blame the Aeon springs until I try better shocks. The beauty of the Timbren system is that it is modular and you can swap out the Aeon nibs for others. from the Timbrens universal catalogue. If I go lower and they get too stiff I can get a softer/smaller load spring and still use the OEM mount that comes with this kit. People with higher trucks could also get longer springs. The only negative was that the price for them dropped to $190 for a while. It must have been the day before I bought them when they went back to their full price. Well, that's life.