Beach4X4
09/03/2026
Teraflex
Looks great and will be instrumental to extra height upgrade down the road.
TeraFlex Alpine IR Short Control Arm Kit, Front Lower (0"-4.5" Lift) for 2018-2026 Jeep Wrangler/Gladiator
$567.99
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- Guaranteed FitmentTeam-confirmed fit or money back
- No Sales TaxZero sales tax on every order
- 30-Day Money-Back GuaranteeReturn it within 30 days of delivery for a refund
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Fits the same truck
Features
- IR rotating bushings: TeraFlex IR bushings rotate freely for unrestricted flex while still damping noise and vibration.
- Less bind at full flex: Free rotation takes the twisting load off the bushing, so the arm binds less as the axle articulates.
- Adjustable length: Alpine arms adjust in length, so you can set them to the measurements in TeraFlex's instructions and dial in the alignment.
- 42mm x 4mm wall DOM tube: TeraFlex builds the short arms from 42mm DOM tubing with a 4mm wall, sized for rocks and hard use.
- Bolts to the factory mounts: No welding needed: the arms bolt to the factory control arm brackets.
- Rated for 0-4.5" of lift: Made for the Wrangler JL and Gladiator JT with up to 4.5" of lift; TeraFlex requires an alignment afterward.
Description & Fitment
TeraFlex makes the Alpine IR short control arm kit, part 1416550, to fit the 2018-2026 Jeep Wrangler JL and 2020-2026 Jeep Gladiator JT. You get the front lower arms, and every arm carries TeraFlex IR rotating bushings. It bolts to the factory mounts and is rated for 0-4.5" of lift. The same front arms fit both the JL and the JT. TeraFlex's instructions name the front lowers as the arms to change first when correcting caster and pinion angle. Coil springs, shocks and track bars are sold separately, and the Jeep needs an alignment when the arms are on.
Fitment & Compatibility
| Years | Model | Bed | Notes |
|---|---|---|---|
| 2018-2026 | Wrangler | JL | |
| 2020-2026 | Gladiator | JT |
Check your Jeep: Wrangler JL and Gladiator JT; lift 0-4.5"; these front arms fit both the JL and JT.
Not for: the factory-style bushing version (1416500); lifts above 4.5" (see the Alpine long arm kits).
About TeraFlex
TERAFLEX.
TeraFlex describes itself as 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 range.
The company traces its roots to the 1950s and MEPCO (Military Equipment Parts Company), an early supplier of Jeep parts. TeraFlex Manufacturing followed in 1996 to build heavy-duty suspension for the TJ Wrangler, and today's catalog runs from full lift systems and the Falcon shock line to axles, steering and armor.
Authorized TeraFlex dealer. Prestige Truck is an authorized TeraFlex dealer, so what we sell is new and genuine TeraFlex. In TeraFlex's words, its limited warranty extends "only to the consumer who originally purchased the product," so keep your receipt with your build records.
Frequently Asked Questions
Will this fit my 2018-2026 Jeep Wrangler JL and 2020-2026 Jeep Gladiator JT?
Yes, if your Jeep matches the fitment table and sits within 0-4.5" of lift. If you're unsure, send us your VIN and we'll check.
What length do I set the arms to?
TeraFlex's instructions list starting lengths by position and lift height. Set the arms to those, then have the Jeep aligned.
Do I need new control arms after a lift?
Lifting a Jeep changes caster and pinion angle. TeraFlex sizes each kit for a lift range: preset Sport arms and Sport frame brackets suit moderate lifts, while adjustable Alpine arms let you set the length for your exact height. Plan on an alignment after any control arm change.
What is the difference between Alpine and Alpine IR?
Both are adjustable-length arms. Alpine arms use maintenance-free factory-style bushings; Alpine IR arms use TeraFlex IR (Independent Rotation) bushings, which rotate freely so the arm binds less as the suspension flexes.
Short arms or long arms?
Short arms bolt to the factory mounts and TeraFlex rates them for 0-4.5" of lift. Long arm kits are for JL Wranglers with 3-6" of lift and need the factory control arm brackets cut off the frame to fit the long arm brackets, so they are a much bigger job.
Can I replace just one pair?
Yes. Arms are sold by position as well as in 8-arm kits. TeraFlex's instructions say that if you replace a single pair to correct caster and pinion angle, it recommends the lower arms.
Installation
DifficultyNot stated by TeraFlex
TypeBolt-on short arms and bracketslong arm kits need the factory brackets cut off and holes drilled
ToolsMetric Sockets and Open End WrenchesFactory Service Manual; Torque Wrench; General Mechanics Tools
Afterwardalignment required
Here's the short version. Follow TeraFlex's install sheet (below) for your Jeep's exact steps and torque values.
- Work with all four tires on the ground if you can (if you raise the Jeep, use the factory service manual lifting points) and never remove more than two control arms at a time.
- Remove the sway bar link bolts at the axle and swap the front lower shock bolts with the lower sway bar link bolts (the shock bolts are slightly too long and touch the Alpine arm); torque the sway bar link bolts to 59 ft-lbs and the lower shock bolts to 74 ft-lbs as printed (p5).
- Remove and discard the brake line brackets on the arms, then remove the frame-side and axle-side lower control arm bolts.
- Bolt the fixed end of the Alpine arm to the frame with the sticker facing out, finger-tight.
- Loosen the clamp, extend the arm to the recommended starting length (chart, p11), bolt it into the axle mount and torque the 8mm clamp bolts to 30 ft-lbs as printed.
- Torque the control arm bolts last (103 ft-lbs + 145° as printed, p6): with standard Alpine bushings set the Jeep back on the ground first; arms with Alpine IR bushings can be torqued with the Jeep in the air.
Install videos
- 999321 Jeep JL Alpine Short Control Arms Instructions (PDF)
- 999373 Jeep JT Alpine Short Control Arms Instructions (PDF)
Stuck on a step?
Specifications
| Brand | TeraFlex |
|---|---|
| Part Number | 1416550 |
| Product Type | Adjustable short control arms |
| Tube | 42mm x 4mm wall DOM |
| Mounting | Factory control arm brackets |
| Lift Range | 0-4.5" |
| Alignment | Required after install |
| Bushings | TeraFlex IR |
| Warranty | Lifetime on the arms and IR bushings |
| Fits | 2018-2026 Jeep Wrangler JL and 2020-2026 Jeep Gladiator JT |
| Position | Front Lower |
| UPC | 843885046752 |
Warranty, shipping & returns
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Warranty
TeraFlex covers its control arms and IR bushings for life against defects in materials and workmanship; paint and powder coat finishes carry 90 days (defects only).- TeraFlex extends its limited warranty only to the consumer who first bought the product, and only on the vehicle the part was first installed on. It does not pass to a later owner.
- Coverage starts on the purchase date and does not restart if a part is repaired or replaced.
- For a covered defect, TeraFlex will either repair or replace the product (or the faulty part) free of charge or refund the purchase price, at its discretion, and it pays the freight to send a repaired or replacement part back to you.
- Not covered: damage from transportation, storage, improper use, skipped instructions or preventive maintenance, modifications, unauthorized repair, normal wear and tear, product finish, improper installation or maintenance, racing or competition, or accidents, abuse and neglect. Improper installation, poor maintenance, racing or competition use, and neglect or abuse void the warranty.
- Paint and powder coat finishes carry 90 days of defect coverage only, not wear from use.
- Claims: contact us first. Keep your proof of purchase or original invoice; removing the part from the vehicle and the inbound shipping are the owner's responsibility.
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Free shipping
Ships free to the lower 48 states, with no minimum order.- Order by 5 PM ET on a business day and it starts processing the same day.
- Most orders arrive within 1-5 business days.
- We email your tracking number as soon as it ships.
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Inspect on delivery
Control arms ship boxed with their hardware. Check each arm, bushing and joint, plus any brackets, against the part list in the TeraFlex instructions before you start. Check it as soon as it arrives.- Look for crushed ends, punctures or tears in the carton.
- If something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).
- Open the box and check the parts against the parts list before you install.
- Email support@prestigetruck.com right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.
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30-day returns
Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.- Email support@prestigetruck.com with your order number. We reply within 1-2 business days with instructions.
- Damaged, defective or wrong item: we send a prepaid label or arrange a pickup.
- Changed your mind: you pay return shipping. No restocking fee.
- Refunds go back to your original payment method within 7 business days of approval. See our returns policy.
What our customers say
5 · 4 reviews
JLU_392
08/29/2026
Game changer on the trail
Made my 392 a whole new experience on the trail!!!
RedHotRubicon
05/20/2026
Worth the Money
Bought after hearing so many great things about the IR bushings and their longevity, could definitely see more flex opposed to using stock arms. For anyone running under 4.5" of lift, this is the way to go.
Customer
12/01/2025
Installed on 2020 Jeep 4d Rubicon
Installed on 2020 Jeep 4d Rubicon with a TeraFlex 3.5 inch lift. Completed install in my driveway with jack stands. It was a little difficult to torque the nuts due to body position. Otherwise, all parts fit perfectly, no issues at all. Product is very well made and allowed me to adjust the pinion angel and wheel base. The instructions were pretty good as well. I would have preferred to know the end torque value rather than torque plus add degrees (i.e. 74ft lbs + 185 degrees).