Overview
The TeraFlex 1258400 is a 3 inch S/T3 suspension lift kit with Fox shocks for four-door 2007–2016 Jeep Wranglers (JK). It fits the Unlimited 70th Anniversary, Unlimited 75th Anniversary, Unlimited Rubicon, Unlimited Sahara, Unlimited Sport, Unlimited Sport S and Unlimited X models, which are the four-door trims for this kit.
The S/T3 system is built for street and trail driving with a simple bolt-on installation. It uses six Sport Flexarms preset for the caster and pinion angles of a 3 inch lift, so no alignment or adjustment is needed after installation.
The system includes SpeedBump progressive bumpstops and a front heavy duty adjustable trackbar. The factory style bushings are designed for vibration damping and ride quality. A lifetime warranty applies to the kit.
Key features
- 3 inch lift
- Six Sport Flexarms with factory style bushings
- Preset caster and pinion angles for 3 inch lifts
- SpeedBump progressive bumpstops
- Front heavy duty adjustable trackbar
- Full range of movement for off-road flex and articulation
- Fox shocks for this configuration
Driveline and clearance after the lift
Raising a four-door Wrangler changes driveline angles, especially at the front axle and transfer case. Those angles affect vibration and U-joint wear, so the driveshafts should be inspected after the first few drives. Clearance between the driveshaft and the transmission crossmember or exhaust should also be checked, since the body sits higher than before.
Bump stop clearance is another area to inspect. SpeedBump progressive bumpstops engage gradually, which keeps the ride controlled at the end of travel. Look for contact with the frame or body at full compression, and inspect the rubber for tears. An adjustable trackbar should be checked for square after any change in ride height.
- Inspect U-joints for play after the first drives
- Check bump stop contact at full compression
- Look for rubbing between tires and inner fenders
Specifications
| Brand | TeraFlex |
|---|---|
| Part number | 1258400 |
| UPC | 843885036517 |
| Lift height range | 3 to 4.99 inches |
| Suspension type | Coil spring kit |
| Rear lift method | Coil springs |
| Front shocks | Fox |
| Body style | Four-door models |
Vehicle fitment
It fits the 2007–2016 Jeep Wrangler (JK) Unlimited, including 70th Anniversary, 75th Anniversary, Rubicon, Sahara, Sport, Sport S and X models.
Two-door Wranglers are not covered by this four-door configuration. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
Installation is bolt-on with no alignment or adjustment required. After installation, check the shock fitment and bump stop clearance, and confirm driveline clearance for your model year. Check the Fox shock length against your front height once the lift is in place.
What’s included
The kit includes a 3 inch lift, SpeedBump bumpstops, a front heavy duty adjustable trackbar and six Sport Flexarms, with Fox shocks for this configuration. The Flexarms are preset, so no alignment or adjustment is needed.
