TL-PRO - Thunder Lane Triple Adjustable Coilover Kit for BMW E90/E92/E93 (Upside-Down Rear) Spring Brand:Swift "name": "What spring rates are

"name": "What spring rates are included

These are starting points—not off-the-shelf limitations

All fees include tax and are based on a 2 day track event with four 20-min sessions per day

The Bell HP7 Evo‑IV Carbon Racing Helmet is a top‑tier FIA 8860‑2018 certified motorsport helmet developed for professional competition

TL-PRO - Thunder Lane Triple Adjustable Coilover Kit for BMW E90/E92/E93 (Upside-Down Rear) Spring Brand:Swift "name": "What spring rates areThe TL PRO is Thunder Lane USs flagship true 3 way adjustable coilover system for the BMW E90 E92 E93, built for serious track use time attack, hill climb, road racing, autocross, and HPDE. Every set is hand assembled to order and bespoke valved to match your goals. Included with every order: CVP + PVP dyno graphs, build to order spring rate selection, and damping tuned for repeatable performance. True 3 Way Adjustable Damping Separate circuits for