Clayton Off Road Premium 4.5 Inch Short Arm Suspension Lift Kit for 2007-2018 Jeep Wrangler JK 2-Door and 4-Door

Is This for You?

• You're running a 2007–2018 Jeep Wrangler JK — 2-door or 4-door — and want Clayton's highest-spec short arm system at 4.5" of lift: 8 arms with both GIIRO joints and forged Johnny Joint adjusters. This is the Premium tier, above the Overland+, built for JK owners who want maximum articulation ceiling and rebuildable hardware at every arm.
• You want to fit 37" tires with full geometry correction at all eight control arm mounting points — caster, pinion angle, and axle centering all dialed in. Eight fully adjustable arms give you the precision that partial-arm kits can't match at this lift height.
• You want a suspension system that performs on the highway and on technical trails without compromise, and that can be serviced and rebuilt rather than replaced. Johnny Joint adjusters are greaseable and rebuildable — long-term serviceability is built in.

The Result

• 8 fully adjustable control arms with dual-durometer GIIRO bushings AND forged Johnny Joint adjusters — GIIRO joints isolate road noise and vibration; forged Johnny Joints are greaseable, rebuildable, and capable of up to 40° of misalignment for extreme articulation. Self-lubricating GIIRO side, serviceable Johnny Joint side.
• 1-3/8" x 5/16" DOM tubing front and rear track bars — adjustable for proper axle centering after lift installation; paired with adjustable front and rear sway bar links to restore proper geometry at ride height.
• SealKor zinc-rich powder-coated coil springs — corrosion-resistant finish rated for the 4.5" lift height; engineered to work with the full 8-arm geometry of the Premium system.

The COR-2908045 is Clayton Off Road's Premium short arm suspension lift kit for the JK platform in both 2-door and 4-door configurations, set at the 4.5" lift height. The Premium tier is Clayton's highest-spec short arm system — it combines GIIRO dual-durometer bushing joints (road noise isolation, maintenance-free) with forged Johnny Joint adjusters (greaseable, rebuildable, 40° misalignment capability) at all eight control arm positions. This dual-joint architecture gives you the on-road comfort of GIIRO with the off-road articulation ceiling and long-term serviceability of Johnny Joints. At 4.5" of lift, a front CV-style driveshaft is highly recommended to manage driveshaft angle and reduce vibration. 2012–2018 JK models require an exhaust spacer due to exhaust routing changes — available in the related items tab. Critical 2-door note: 2-door JK models will see approximately 1" more lift than the advertised 4.5" due to lighter vehicle weight. Ships at 145 lbs. Made in the USA, backed by a Lifetime Warranty.

Audit Table

Verified Fitment (OFAS Standard)

Fits — 4-Door (Unlimited):

• ✅ 2007–2010 Jeep Wrangler Unlimited X (JK)
• ✅ 2007–2018 Jeep Wrangler Unlimited Rubicon (JK)
• ✅ 2007–2018 Jeep Wrangler Unlimited Sahara (JK)
• ✅ 2010–2018 Jeep Wrangler Unlimited Sport (JK)
• ✅ 2011 Jeep Wrangler Unlimited 70th Anniversary (JK)
• ✅ 2016 Jeep Wrangler Unlimited 75th Anniversary (JK)
• ✅ 2016–2018 Jeep Wrangler Unlimited Sport S (JK)

Fits — 2-Door:

• ✅ 2007–2010 Jeep Wrangler X (JK)
• ✅ 2007–2018 Jeep Wrangler Rubicon (JK)
• ✅ 2007–2018 Jeep Wrangler Sahara (JK)
• ✅ 2010–2018 Jeep Wrangler Sport (JK)
• ✅ 2011 Jeep Wrangler 70th Anniversary (JK)
• ✅ 2016 Jeep Wrangler 75th Anniversary (JK)
• ✅ 2016–2018 Jeep Wrangler Sport S (JK)
• ✅ 2018 Jeep Wrangler JK Rubicon, Sahara, Sport, Sport S

Does NOT Fit:

• ❌ 2019–2026 Jeep Wrangler JL — different platform entirely
• ❌ Jeep Gladiator JT — different wheelbase and suspension geometry

2-Door Net Lift Note: 2-door JK models will see approximately 1" more lift than the advertised 4.5" due to lighter vehicle weight. Plan wheel and tire clearance accordingly.

Installation & Fabrication Notes

• Align all 8 control arms, front and rear track bars after installation — all arms and bars are adjustable for caster, pinion angle, and axle centering.
• Grease Johnny Joint adjusters at initial installation and periodically thereafter — grease fittings are accessible with standard grease gun equipment.
• Front CV-style driveshaft is highly recommended at 4.5" of lift to manage driveshaft angle and reduce vibration — source separately before installation.
• 2012–2018 JK models require an exhaust spacer — available in the related items tab. Do not install without the spacer on applicable model years.
• Adjust sway bar links after lift to restore proper sway bar geometry and on-road handling.
• Full 4-wheel alignment required after installation — use a shop familiar with lifted JK geometry and multi-arm adjustability.
• California Prop 65 Warning: This product can expose you to chemicals including those known to the State of California to cause cancer and reproductive harm. See P65Warnings.ca.gov.

Wheel & Tire Fitment

• 4.5" lift (4-door): Up to 37" tires
• 4.5" lift (2-door): Net ~5.5" — verify clearance for 37" tires with your specific wheel offset and backspacing
• 3.5" lift: Up to 35–36" tires
• 2.5" lift: Up to 33–35" tires
• 1.5" lift: Up to 31–33" tires
• Backspacing and offset affect final clearance — verify with your specific wheel spec before ordering tires.

Engineering Question: Are you running a 2-door JK or a 4-door JK Unlimited, and what model year? 2-door models net approximately 1" more lift than advertised. 2012–2018 models require an exhaust spacer — confirm your year before ordering. Also confirm whether you have or plan to source a front CV-style driveshaft before installation at 4.5" of lift.