Overview
The TeraFlex 1313000 is a 3-inch Sport ST3 suspension system for the 2007–2018 Jeep Wrangler (JK) Unlimited 4-door, in the 70th Anniversary, 75th Anniversary, Rubicon, Sahara, Sport, Sport S and X trims. It adds preset Sport flexarms and SpeedBump progressive bump stops to the Sport ST design as a single kit for street and trail use.
The kit clears the same tire size as the 2.5-inch Sport ST2 while adding ground clearance. The six preset Sport flexarms, the heavy-duty front track bar and the rear track bar bracket set caster and pinion angles for lifts of 2.5 to 3 inches, so no alignment is needed. Shocks are not included. Falcon shock absorbers are the matched option, designed with the coil springs for better compression and rebound. The lift components come together in one package.
Key features
- Six preset Sport flexarms
- SpeedBump progressive bump stops
- Heavy-duty front track bar and rear track bar bracket
- Designed to clear the same tire size as the 2.5-inch Sport ST2, per TeraFlex
- Coil springs designed to work with Falcon shocks
Long-term care of the arms
Preset flexarms keep their geometry only if the mounting hardware stays tight and the bushings stay in good condition. After the first few drives, check every arm bolt and the track bar fasteners, since new hardware can settle under load. Look for cracked boot seals, dry or torn bushings and any movement at the ends of the arms when the axle is pushed by hand.
Shock choice affects how the arms and springs behave over a long day of driving. Matching the shocks to the coil springs helps control body motion on pavement and during trail runs. If the front or rear height changes over time, the springs, bump stops and arm lengths should all be checked together rather than one part at a time.
- Retorque arm and track bar bolts after the first drives
- Check arm ends for torn boots or movement
- Inspect bump stops with the springs
- Look for uneven ride height side to side
Specifications
| Brand | TeraFlex |
|---|---|
| Part number | 1313000 |
| Type | 3-inch Sport ST3 suspension |
| Lift height range | 0 to 3.5 inches |
| Lift for preset angles | 2.5 to 3 inches |
| Rear lift component | Coil springs |
| Shocks | Not included |
| Fitment type | Direct fit |
Vehicle fitment
It fits the 2007–2018 Jeep Wrangler (JK) Unlimited 4-door, including the 70th Anniversary, 75th Anniversary, Rubicon, Sahara, Sport, Sport S and X trims.
It is for the Unlimited 4-door JK only. The 2-door JK and the JL are not covered. Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
No alignment is needed for lifts of 2.5 to 3 inches with the preset flexarms and track bar. Check the driveline angles after installation.
What’s included
Six preset Sport flexarms, SpeedBump bump stops, the front track bar, the rear track bar bracket and the coil springs.
Not included: Shocks. Falcon shocks are recommended.
