TeraFlex 4" Alpine CT4 Long Arm Suspension System, No Shocks (2-Door) for 2007-2018 Jeep Wrangler JK
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Fits the same truck
Features
- 4" lift, 37" tires: TeraFlex's lift and maximum tire diameter for the CT4.
- Alpine long arms and brackets: Adjustable long arms in 42mm x 4mm (upper) and 50mm x 5mm (lower) wall DOM on TeraFlex's long arm brackets.
- HD adjustable track bars: Front and rear track bars to center the axles and sharpen steering.
- Near-factory arm angles: The brackets move the frame mounts so the arms sit at near-factory angles on a taller lift.
- Trail and highway: TeraFlex builds the CT4 for rocks and trails without giving up highway control.
- Shocks not included: Longer shocks are required and sold separately.
Description & Fitment
TeraFlex's 4" Alpine CT4 Long Arm Suspension System for the 2-door 2007-2018 Jeep Wrangler JK combines adjustable Alpine long control arms and Alpine long arm brackets with HD adjustable front and rear track bars. TeraFlex rates it at 4" of lift with room for 37" tires. The base kit does not include shocks, and longer shocks are required. Installing the brackets means cutting off the factory control arm mounts and welding.
Fitment & Compatibility
| Years | Model | Bed | Notes |
|---|---|---|---|
| 2007-2018 | Wrangler | JK; 2-door only; 4" lift |
Check your Jeep: Wrangler JK 2-door, 2007-2018; longer shocks; wheels with 4.75" backspacing or less.
Not for: JK Unlimited 4-door (1324000); JL or JT models. IR bushing version: Alpine RT4 (1234000).
About 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
Is there a 4-door version?
Yes, part 1324000.
What wheels do I need?
TeraFlex calls for 4.75" backspacing or less, or its 1055000 offset wheel adapters with stock wheels.
Is welding involved?
Yes. The factory control arm brackets are cut off and the Alpine long arm brackets welded in. An alignment is required afterward.
What warranty does TeraFlex give?
TeraFlex covers its control arms, IR bushings and long arm brackets for life against defects in materials and workmanship. Non-IR control arm bushings carry 1 year and finishes 90 days. Contact us with your order details to confirm coverage on any other part or to start a claim.
How quickly does it ship?
Shipping is free to the lower 48 states, and most orders arrive within 1-5 business days. We email your tracking number as soon as it ships.
Can you confirm it's right for my Jeep before I order?
Yes. Contact us with your VIN or year, model and trim, plus your current lift, and we'll check it against TeraFlex's fitment information before it ships.
Installation
Here's the short version. Follow TeraFlex's install sheet (below) for your Jeep's exact steps and torque values.
- Lift the Jeep by the frame, remove the wheels and both drivelines completely, then the exhaust, drag link at the knuckle, both track bars, calipers, sensors and breathers (p5).
- Lower the axles and remove the springs, then remove all four rear and all four front control arms (keep the hardware) and set the axles aside safely.
- Support the transfer case and swing its cross member aside, disconnect the fuel supply, return and EVAP lines (the supply line may be under pressure, cap all open lines) and lower the fuel tank; remove the catalytic converters (p8).
- Cut off the stock control arm brackets, grind the frame smooth, clean paint within 1" of the weld areas, and weld on the rear frame gussets and the new long arm brackets with C-clamps; prime and paint all bare metal (p9).
- Set the Alpine long arms to 27 3/4" front upper, 33 11/16" front lower, 19 1/2" rear upper and 35 1/8" rear lower and install them adjustable end at the axle (new hardware at the frame, original at the axle, rear lowers bends in and up, p11), bolts untightened.
- Fit the spring spacers, springs, shocks, sway bar links (75 ft-lbs, p14) and new brake lines with copper washers (p15), refit the brakes, sensors, drag link, tank and exhaust, relocate the EVAP canister on 2012+ 4-doors (p18), torque all arm bolts on the ground and get a 4-wheel alignment (p19).
- 999298 07-17 JK 4-6 Inch Suspension Lift Kit (PDF)
- 999043 JK Forged Rear Adjustable Trackbar Instructions (PDF)
- 999044 JK Forged Front Monster Track Bar (PDF)
- 999090 JK Long Arm Bracket Instructions (PDF)
- 999292 JK Front and Rear 3-3.5 Lift SpeedBump Kit (PDF)
Stuck on a step?
Specifications
| Brand | TeraFlex |
|---|---|
| Part Number | 1224000 |
| Product Type | Long arm suspension system |
| Lift Height | 4" |
| Max Tire Diameter | 37" |
| Tube | 42mm x 4mm upper / 50mm x 5mm lower wall DOM |
| Shocks | Not included (longer shocks required) |
| Wheels | 4.75" backspacing or less, or 1055000 adapters |
| UPC | 843885041153 |
Warranty, shipping & returns
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Warranty
TeraFlex covers its control arms, IR bushings and long arm brackets for life against defects in materials and workmanship. Alpine control arm bushings other than IR carry 1 year, and paint and powder coat finishes 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
Long arm parts ship in several boxes. Check every arm, bracket and hardware pack against the part list in the TeraFlex instructions before you start cutting, and contact us right away about anything missing or damaged. 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.