The 2.5" Trail Select Adventure Kit with Falcon 2.1 Shocks (4-Door) is a complete TeraFlex Trail Select system, with springs, geometry parts and Falcon shocks chosen to work together. Falcon shocks are tuned to the tier, so ride and control suit how the Jeep is used. Part number 1542000 fits the 2018-2026 Jeep Wrangler.
What's Included:
- Falcon SP2 2.1 monotube shocks
- HD adjustable Alpine front lower control arms (JL)
- Front track bar, forged and adjustable (JL)
- Track bar brackets, front and rear
Not Included:
Wheels, tires, offset wheel adapters and the alignment after installation are not included.
Features
Complete system, shocks included
Each Trail Select kit includes Falcon shocks along with the springs and supporting parts, matched for its lift height and tier.
Three tiers for your use
Sport targets daily driving, Adventure balances comfort with trail control, and Performance is built for the most demanding use.
Geometry correction included
Control arm, track bar and bracket parts included in each kit restore caster and suspension alignment at the new height.
Falcon shocks tuned per tier
Falcon 1.1, 2.1 and 3.3 shocks are valved for their tier, from smooth everyday damping to adjustable piggyback control.
Clear application limits
TeraFlex does not offer these kits for diesel, 392 or 4xe models, and lists the wheel backspacing each kit needs.
Fitment & Compatibility
Fit guidance: Fits: 2018-2026 Jeep Wrangler (JL; 4-door only). For 4-door Wrangler Unlimited models only; not for 2-door models. Not for EcoDiesel, 4xe or 392 models (call TeraFlex about those applications). Check your trim and factory equipment against the notes before ordering.
Qualifier: JL; 4-door only
Specifications
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Brand: TeraFlex
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Series: Trail Select
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Not for: Diesel, 392 and 4xe models
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Shocks included: Yes
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Lift height: 2.5"
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Country of origin: Taiwan
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Not for: 2-door models; EcoDiesel, 4xe and 392 models
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Part number: 1542000
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Max tire size: 35" (TeraFlex)
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Shock model: Falcon SP2 Monotube 2.1
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Estimated install time: 6 to 8 hours (TeraFlex estimate)
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Installation: Rated hard by TeraFlex, certified mechanic install recommended
Installation
Type: Complete lift system with Falcon shocks · Install: Several linked sheets, some drilling · Afterward: Alignment required
Read every sheet linked for this system and plan the order before starting. Confirm your wheels meet the backspacing requirement. A certified mechanic is recommended, and an alignment and headlight aim check should follow the install.
Falcon quick start for the JL 2.1 monotube shocks: install shaft down with the spacer facing inward for frame clearance, and rotate the rear shaft until the roost guard lettering faces forward.
Torque: 56 ft-lb, Upper and lower shock bolts, front and rear
Explains Falcon Mode Adjust: with the shock fully extended, rotating the shaft 360° switches the internal bypass between Performance and Soft/Cold tuning, and the change can be felt as it clicks over.
Covers the JL rear track bar axle bracket. TeraFlex states it needs at least a 2" bump stop spacer to keep the body from being damaged as the suspension cycles. Two 1/2" holes are drilled after marking the bracket position (a center punch and pilot hole are suggested). The lower track bar position is for 2.5"-3" lifts and the upper is for 4" lifts; it can be installed with the Jeep on the ground.
Tools named in the guide: Basic mechanics tool set, Factory service manual, Drill, 1/2" drill bits, Pilot drill bit, Center punch, Torque wrench
Torque: 95 ft-lb, Supplied M12 bracket bolts (16mm and 18mm); 150 ft-lb, Supplied M14 track bar bolt (18mm and 21mm)
Covers the JL 2.5" spring lift: new front and rear springs and bump stop spacers go in, the brake line brackets on the lower control arms and the rear parking brake cable bracket are discarded, and the parking brake eyelets are held with locking pliers while the rear axle is lowered. TeraFlex states that some form of caster correction is required for the base spring lift, that a 37" tire on a Sport or Sahara may need additional bump stop spacers, and that a rear track bar bracket may be needed to keep the rear driveshaft from contacting the gas tank. Control arm bolts are torqued at ride height unless the arms have Alpine IR bushings.
Tools named in the guide: Metric sockets and open-end wrenches, Torque wrench, General mechanics tools, Factory service manual, Locking pliers (2)
Torque: 12 ft-lb, Front bump stop hardware; 25 ft-lb, Rear bump stop bracket bolts (8mm and 6mm hex); 66 ft-lb, Sway bar link nuts; 45 ft-lb, Rear sway bar link nuts; 103 ft-lb + 145°, Front lower control arm bolts; 37 ft-lb + 135°, Front upper control arm bolts (18mm); 74 ft-lb + 65°, Rear upper control arm bolts (21mm); 130 ft-lb, Lug nuts
Covers the Alpine short control arms on the JL. TeraFlex recommends doing the job with all four tires on the ground and never removing more than two arms at a time. On diesel models the exhaust blocks the passenger upper arm bolt, and the sheet describes lowering the exhaust or cutting that bolt. Arms are set to the lengths in the sheet and torqued at ride height unless they have IR bushings.
Tools named in the guide: Metric sockets and open-end wrenches, Torque wrench, General mechanics tools, Factory service manual
Torque: 103 ft-lb + 145°, Front lower arm bolts (24mm nut); 37 ft-lb + 135°, Front upper arm bolts (18mm); 74 ft-lb + 50°, Rear arm bolts (21mm), see sheet; 30 ft-lb, Adjuster clamp bolts (8mm); 59 ft-lb, Sway bar link bolts; 74 ft-lb, Lower shock bolts
Covers the front HD forged adjustable track bar. If a TeraFlex front track bar bracket is already installed, leave it in place. Set the bar near the length needed to center the axle (the factory bar is 33-3/4"), reuse the OEM hardware, and do the final tightening with the vehicle on the ground and the suspension loaded. The clamp bolts are tightened alternately until both hold torque, which can take up to 10 passes, and the drag link may need adjusting if the steering wheel is off center.
Tools named in the guide: Metric sockets and open-end wrenches, Torque wrench, General mechanics tools, 12-point 10mm socket, 1-3/8" wrench, Factory service manual
Torque: 52 ft-lb + 115° (ref. 205 ft-lb), 21mm track bar bolt, first end; 52 ft-lb + 155° (ref. 200 ft-lb), 21mm track bar bolt, second end; 60 ft-lb, 12-point 10mm adjuster clamp bolts
Covers the front track bar axle bracket for 2.5"-3.5" lifts. The bracket is best installed with the tires on the ground; it is positioned on the axle, the front and rear holes are marked, and the bracket comes off so two 1/2" holes can be drilled before it bolts on with the supplied M12 hardware and flag nut.
Tools named in the guide: Metric sockets and open-end wrenches, Torque wrench, General mechanics tools, Drill with 1/2" bit, Factory service manual
Torque: 59 ft-lb, 18mm sway bar link bolt, factory hardware; 95 ft-lb, M12 bracket bolts (16mm bolt, 18mm nut); 150 ft-lb, Track bar to bracket, supplied hardware (18mm bolt, 21mm nut)
TeraFlex's installation instructions for this part number are linked under Resources. Read them fully before starting.
Resources
Warranty, Shipping & Returns
Warranty. TeraFlex backs its products with a limited warranty against defects in materials and workmanship for the original purchaser, on the vehicle the part was first installed on. Falcon shocks are covered for 1 year; coil springs, bump stops, control arms, track bars and sway bar links carry a lifetime warranty. If a covered part fails, TeraFlex will repair or replace it or refund the purchase price at its discretion. The warranty does not cover improper installation, missed maintenance, modifications, normal wear, finish wear or racing and competition use, and paint and powder coat finishes are covered for 90 days against defects only. Shipping. The carrier and ship method are set by the size and weight of the cartons when the order is placed; larger kits and axles ship by freight. Inspect on delivery. Inspect the carton and every part as soon as the delivery arrives, note any shipping damage with the carrier, and contact us right away so we can make it right.
Returns. Unused items in their original packaging can be returned within 30 days of delivery. If an item arrives damaged, defective or wrong, return shipping is on us. See our Returns & Refunds Policy, or email support@prestigetruck.com with any question.
About TeraFlex
TeraFlex is a Jeep company at heart, started and staffed by people who drive them. It designs, engineers and builds suspension systems, shocks, axles and performance parts, with the Wrangler and Gladiator at the center of the lineup.
The company traces its history to the 1950s, when it began as MEPCO (Military Equipment Parts Company), one of the first companies anywhere to supply Jeep parts and accessories. TeraFlex Manufacturing followed in 1996 to build heavy-duty suspension for the TJ Wrangler, and the brand credits itself with the first suspension system for that coil-spring platform, a low-range gearing option for the 231 transfer case and the CRD60 high-pinion axle.
The current catalog covers full lift systems, the Falcon shock line and a long list of Wrangler and Gladiator upgrades, and the company is now carrying the same engineering approach to other vehicles as well.
