How a spring collar lift and a Geiser +2" spring compare on the 2024–2026 Ford Ranger Raptor: ride, wheel travel, 35" tires and what the install takes.
The Short Answer
Both lift the front of a Ranger Raptor, both keep the factory FOX Live Valve shocks, and neither one changes wheel travel. You keep stock travel either way. The difference is the ride. A spring collar keeps the factory spring and adds preload, with a choice of 1.5", 2" or 2.5" of lift. A Geiser +2" spring replaces the factory spring with a progressive-rate spring for about 2" of lift, and it rides stiffer than the collar lift. Running 35s? You want 2" or more.
Spring Collar vs. Geiser Spring
| What you care about | FMI spring collar lift | Geiser +2" front spring |
|---|---|---|
| Front lift | 1.5", 2" or 2.5" | About 2" |
| Factory spring | Kept, with added preload | Replaced with a progressive-rate spring |
| Ride | Softer of the two | Stiffer than the collar lift; firmer than stock |
| Wheel travel | Stock | Stock |
| FOX Live Valve shocks | Kept | Kept; no Live Valve recalibration needed |
| 35" tires | Use the 2" or 2.5" collar | Up to 35" |
| Install | Coil over out, spring compressed | Coil over out, spring compressed |
| Finish | Raw billet, black or FOX orange anodized | Gloss dark slate grey powder coat |
What Each One Does
Spring Collar Lift
The FMI collar installs under the factory spring and above the lower spring perch on the Live Valve coil over. It adds preload to the spring you already have, which raises the front of the truck. Pick 1.5", 2" or 2.5" to match your tires and the stance you want. The collars are CNC machined in-house from billet aluminum and laser engraved, in raw, black anodized or FOX orange anodized.
For more on how collars lift a truck, see Lift and Leveling Collars: How They Work and Lift Collars vs. Top Spacers.
Geiser +2" Front Spring
The Geiser kit replaces the factory front spring with a custom progressive-rate spring built for the Ranger Raptor. It gives about 2" of front lift and a level stance with the factory rear springs. The progressive rate adds support and front end control, and the ride is firmer than stock and stiffer than the collar lift. It works with the factory Live Valve shocks with no recalibration.
Lift for 35s on a Ranger Raptor
For 35" tires, you really need 2" or more of front lift. That means the 2" or 2.5" spring collar, or the Geiser +2" spring. Tire fit still depends on your wheel size, offset and the tire itself, so check your combination.
Moving to 35s? You will also want somewhere to put a matching spare. See Truck Bed Spare Tire Carriers.
Collar or Spring: Which Should You Choose?
Same Work Either Way
Both installs are basically the same job. The coil over comes out of the truck and the spring has to be compressed to take it apart, either to fit the collar or to swap in the new spring. A wall-mounted spring compressor is the right tool. Have the front end aligned after the ride height change.
Parts to Pair With a Lift
Ranger Raptor Front End
Made for the 2024 and newer Ranger Raptor.
Why upper arms after a lift: some trucks lose caster when the front is raised and start to feel unstable at speed. Adjustable arms let the alignment shop put it back. See Upper Control Arms: Caster After a Level. Also worth a look: the Ranger Raptor front limit strap and bump stop kit and billet tie rods.
Ranger Raptor Lift FAQ
What is the best lift for a Ranger Raptor?
It depends on the ride you want. A spring collar keeps the factory spring and the softer ride and gives you 1.5", 2" or 2.5". A Geiser +2" spring gives about 2" with a stiffer, more supported ride. Both keep the factory Live Valve shocks.
Does a lift add wheel travel?
No. Both the collar lift and the Geiser spring keep stock wheel travel. They change ride height, not how far the suspension cycles.
How much lift do I need for 35s on a Ranger Raptor?
2" or more. Use the 2" or 2.5" collar, or the Geiser +2" spring. Wheel size, offset and the tire itself also affect fit.
Is the Geiser spring stiffer than the collar lift?
Yes. The Geiser spring is a progressive-rate spring and rides stiffer than the collar lift, which keeps the factory spring.
Do I need to recalibrate the Live Valve shocks?
Not for the Geiser +2" spring; its maker says no recalibration is needed. The collar kit is designed around the factory Live Valve suspension and keeps the factory shock.
How hard is the install?
Both are about the same job. The coil over comes out and the spring is compressed to take it apart. Use a wall-mounted spring compressor, and get an alignment afterward.
Does it lift the rear too?
No. Both are front kits. The Geiser +2" spring is designed to give a level stance with the factory rear springs.
Not sure which height fits your tires? Call the shop and tell us what you are running.