The 4.5" Alpine RT4 Long Arm Suspension System is engineered to excel on the highway, off-road, through the desert, or rock crawling! Alpine IR Long Control Arms & Brackets and HD Forged Adjustable Front Track Bar allow full adjustability.

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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! TeraFlex suspensions are built on decades of research and development resulting in the ultimate suspension with a lifetime warranty. Bolt-on Alpine IR Long Control Arms & Brackets, HD Forged Adjustable Front Track Bar, and Front and Rear Track Bar Brackets allow full suspension adjustability, while the SpeedBumps smooth out unexpected trail bumps. Adjustable Alpine IR Long Control Arms balance front caster 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, Alpine 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 control arms. HD Forged Adjustable Front Track Bar and Front and Rear Track Bar Brackets improve steering response, center the axles to optimize vehicle roll center, and reduce body roll for unsurpassed handling. Alpine IR Control Arms feature our all-new IR (Independent Rotation) 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. 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!

• Alpine RT4:
• Delivers true Rogue Trail (RT) performance
• Dependable performance w/ zero worries
• Positive, responsive handling w/ reduced NVH
• Innovative IR Bushings provide unrestricted rotation and flex as well as excellent NVH damping
• Maintenance-free IR Bushings improve on- and off-road ride quality and performance
• HD Forged Adjustable Front Track Bar and Front (3.5"+) and Rear Track Bar Brackets 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
• 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
• 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 Control Arms & Brackets balance front caster angle and pinion angles as well as optimize rear pinion angle and tune anti-squat geometry for proper suspension alignment on 3-6" lift kits
• Alpine IR Long Control Arms are constructed from durable 42mm x 4mm (front upper) or 50mm x 5mm (front lower, rear upper, rear lower) wall DOM tube for maximum strength
• Alpine 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 Alpine IR Long Control Arms
• Bolt-on Alpine Long Arm Brackets are gusseted and reinforced for superior strength w/ reduced NVH compared to other long arm kits Roque Trail:

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Application Summary:

Year	Make/Model
2007-2021	Jeep Wrangler
2018	Jeep Wrangler JK