190. Kelly Aiken on Making Cars Hook, Perfecting 60-130s, Kelltrac, and Understanding Suspension Geometry

Kelly Aiken of Kelltrac joins us to break down suspension setup, traction, and why chassis tuning often matters more than horsepower. We dive deep into Mustang's, drag racing suspension theory, and the growing single-cab F-150 drag truck scene. If you want to understand how shock valving, spring rates, and geometry actually make cars faster, this episode is a masterclass. T ake your build up a whole new level with 6XD Gearbox: https://6xdgearbox.com Code "Minnoxide5" for 5% off High Performance Academy: https://hpcdmy.co/Minnoxide Use code "MINNOX" for 55% off ANY course Use Code "MINVIP" for $300 of the MINVIP Package Tuned By Shawn: https://www.tunedbyshawn.com Code "Minnoxide" for 5% off! Ship With Sure Thing Logistics: https://www.surethinglogistics.net MORE BIGGER Turbo T-Shirts:  https://www.minnoxide.com/products/more-bigger-t-shirt 00:00 Intro 08:12 How Kelly Got Into Cars, Drag Racing & the Mustang Scene 16:34 From Side Hustle to BMR Suspension Development 24:41 The S550 Mustang IRS Revolution & Suspension Design 33:07 Building Performance Suspension Parts That Actually Work 41:56 Why Most Suspension Parts Are Copies (Industry Reality) 50:18 The Truth About Mustang IRS Lockout Kits 58:47 Suspension Setup vs Just Adding Power 1:07:30 Why Traction Beats Horsepower in Drag Racing 1:27:44 Single Cab F-150's and Making Suspension Setups Work 1:45:10 Shock Travel, Spring Rates & Compression Explained 1:54:18 Coilovers vs Traditional Spring/Perch Suspension 2:04:35 Road Course vs Drag Suspension Theory 2:15:12 Anti-Dive Geometry, Weight Transfer & Braking Physics 2:26:48 Controlling Wheelies With Suspension Valving 2:38:57 The Future of Performance Suspension Design 2:52:40 Final Technical Insights + Suspension Advice