JL 4dr: 4.5" Alpine RT4 Long Arm Suspension System – No Shocks
The 4.5” Alpine RT4 Long Arm Suspension System excels on the highway, off-road, through the desert, or rock crawling! Alpine IR Long Arms & Brackets and HD Forged Adjustable Track Bars allow full adjustability.
TeraFlex Alpine RT (Rogue Trail) Suspension Systems build on our already capable Alpine CT (Cross-Trail) Suspension Systems. These systems include all our top-of-the-line components. The 4.5” Alpine RT4 Long Arm Suspension System excels on the highway, off-road, through the desert, or rock crawling! Bolt-on Alpine IR Long Arms & Brackets, HD Forged Adjustable Track Bars, and Track Bar Brackets allow full suspension adjustability, while the SpeedBumps smooth out unexpected trail bumps. This is the ultimate suspension with a lifetime warranty. Adjustable Alpine IR Long Arms balance front caster angle and pinion angles as well as optimize rear pinion angles, anti-squat geometry, and tire position on vehicles with 3–6” lifts. On higher lifts, Long Arm Brackets reposition frame-end control arm mounting points to restore near factory orientation to reduce bushing stress during extreme droop as well as shock load transferred through the Long Control Arms. Alpine IR Control Arms feature our Independent Rotation (IR) Bushings. These innovative bushings remove bushing bind during full suspension travel for less overall bushing load during articulation resulting in unrestricted droop as well as a noticeable ride improvement whether on the highway or the trail. HD Forged Adjustable Track Bars and Track Bar Bracket(s) improve steering response, center the axles to optimize vehicle roll center, and reduce body roll for unsurpassed handling. This results in improved suspension geometry and relaxed control arm angles for a superior ride quality and performance regardless of terrain. These systems restore front and rear roll axis angles to minimize brake dive and acceleration squat. TeraFlex suspension systems provide reduced noise, vibration, and harshness (NVH). Alpine RT Suspension Systems are for the Jeeper who wants it all! Does NOT include shocks. We recommend Falcon Performance Shocks. Sold separately.
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27.5 Hours (28.5 Hours w/ shocks) install time
Alpine RT4: • Lift Height: 4.5” • Sport/Sahara Fenders: 35–37” Tires • Rubicon Fenders: 37” Tires • Aftermarket High Fenders: 39”+ Tires RT Long Arm Suspension Systems: • Adjustable Alpine IR Long Arms & Brackets balance front caster angle and pinion angles as well as optimize rear pinion angles and tune anti-squat geometry for proper suspension alignment on 3–6” lift kits • Constructed from durable 42mm x 4mm (front upper) or 50mm x 5mm (front lower, rear upper, rear lower) wall DOM tube for maximum strength • On higher lifts, bolt-on Long Arm Brackets reposition frame-end control arm mounting points to restore near factory orientation to reduce bushing stress during extreme droop as well as shock load transferred through the Long Control Arms • Brackets are gusseted and reinforced for superior strength w/ reduced NVH compared to other long arm kits • Brackets feature a premium triple-stage powder coating that provides superior durability and corrosion resistance • Long Arm Suspension Crossmember and RockGuard Transmission Skid Plate / Long Arm Crossmember Reinforcement provide additional strength Roque Trail: • Delivers true Rogue Trail (RT) performance • Dependable performance w/ zero worries • Positive, responsive handling w/ reduced NVH • Innovative, maintenance-free IR Bushings provide unrestricted rotation and flex as well as excellent NVH damping to improve on- and off-road ride quality and performance • HD Forged Adjustable Track Bars and Track Bar Bracket(s) improve steering response, center axles to optimize vehicle roll center, and reduce body roll for unsurpassed handling • Front SpeedBump and Rear Progressive Bump Stops provide progressive compression during high-speed suspension movement • Features Front Sway Bar Quick Disconnects • Full range of movement for off-road flex and articulation • Install and drive simple bolt-on installation — no welding required • TeraFlex Limited Lifetime Warranty against defects
Vehicle(s): • JL Wrangler Unlimited (4-door) Specs: • Lift Height: 4.5” • Does NOT fit 4-door JL Wrangler Unlimited 4xe hybrid models Max Tire Diameter: • Sport/Sahara Fenders: 35” (w/ 3” front & 2.5” rear bump stops strike pad extensions/shims) • Sport/Sahara Fenders: 37” (w/ 3.5” front & 4” rear bump stops strike pad extensions/shims) • Rubicon Fenders: 37” (w/ 2.5” front & 3” rear bump stops strike pad extensions/shims) • Aftermarket High Fenders: 39”+ (varies)
• Does NOT fit 4-door JL 4xe hybrid models. • REQUIRES wheels w/ 4.75” backspacing or less – or 1.75” Wheel Offset Adapter Pair (# 1057000 x 2) for stock wheels – NOT INCLUDED. • Models with plastic bumpers REQUIRE removal of bumper-to-fender wind deflector/splash guards to fit 35” or larger tires. • Sport/Sahara Fenders REQUIRE 3” Front and 2.5” Rear Strike Pad Extensions/Shims to fit 35” tires. • Sport/Sahara Fenders REQUIRE 3.5” Front and 4” Rear Strike Pad Extensions/Shims to fit 37” tires. • Rubicon Fenders REQUIRE 2.5” Front and 3” Rear Strike Pad Extensions/Shims to fit 37” tires. • Aftermarket High Fenders REQUIRED to fit 39”+ tires. MUST check clearances. May REQUIRE an additional 0.5” Shim Kit (# 1959300). • EcoDiesel models REQUIRE 1” Lift Front Coil Spring Spacer Kit (# 1155100). • REQUIRES cutting/removal of factory control arm bracketry to install Long Arm Brackets. • Alignment REQUIRED. • REQUIRES longer shocks – Falcon Performance Shocks recommended.
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