SuperPro Lower Trailing Arm Set

2018–2023 Jeep Wrangler JL & Unlimited Models

TRC1179

Overview:

The SuperPro Lower Trailing Arm Set is a precision-engineered suspension upgrade designed specifically for lifted Jeep Wrangler JL models from 2018 to 2023. This kit addresses the common issue of pinion angle misalignment that occurs when lifting your vehicle up to 4 inches, ensuring optimal driveline geometry and improved rear axle articulation. Ideal for off-road enthusiasts and daily drivers alike, these adjustable trailing arms enhance both on-road stability and off-road capability by maintaining proper suspension alignment under demanding conditions.

Supplied as a complete, fully assembled kit with SuperPro’s proprietary bushings, this set offers a durable and maintenance-friendly solution that reduces unwanted noise, vibration, and harshness (NVH). Whether used as a standalone upgrade or combined with SuperPro’s HD adjustable rear and front control arms, this trailing arm set provides a comprehensive approach to suspension performance and longevity.

Key Features:

Designed to deliver precise suspension tuning and enhanced durability, the SuperPro Lower Trailing Arm Set includes the following key features:

• Off-car adjustable trailing arms for accurate pinion angle correction on lifted vehicles
• Compatible with lifts up to 4 inches, ideal for Jeep Wrangler JL and Unlimited models
• Pre-assembled with SuperPro bushings engineered for long-lasting performance and reduced NVH
• Constructed to improve both on-road handling and off-road articulation
• Can be used independently or alongside SuperPro HD adjustable rear and front control arms for a full suspension upgrade
• Tested and developed by SuperPro’s Australian R&D team to ensure quality and reliability
• Enhances driveline geometry to reduce premature wear on drivetrain components
• Direct bolt-on fitment with no major modifications required

Construction & Design:

The trailing arms are manufactured from high-strength steel, providing exceptional durability and resistance to off-road impacts and stresses. Each arm is fitted with SuperPro’s proprietary polyurethane bushings, which are engineered to deliver a balance of flexibility and stiffness. This design reduces unwanted vibrations and noise while maintaining precise suspension control. The adjustable feature allows for fine-tuning of the pinion angle off the vehicle, ensuring optimal driveline alignment and minimizing wear on universal joints and differential components.

SuperPro’s commitment to quality is evident in the fully assembled kit, which undergoes rigorous testing to meet the demands of lifted Jeep Wrangler owners who require both performance and reliability in challenging environments.

Installation & Fitment:

The SuperPro Lower Trailing Arm Set is designed for straightforward installation on Jeep Wrangler JL and Unlimited models from 2018 through 2023. The kit fits a wide range of trims including Sport, Sport S, Rubicon, Sahara, Willys, and special editions such as the 80th Anniversary and Freedom models. Installation requires basic mechanical skills and standard hand tools, with no need for vehicle modifications. The off-car adjustable design allows for precise pinion angle correction before final installation, simplifying the setup process and ensuring optimal driveline geometry.

What’s Included

• Left Rear Lower Trailing Arm (fully assembled with SuperPro bushings)
• Right Rear Lower Trailing Arm (fully assembled with SuperPro bushings)
• Adjustment hardware and instructions

Ideal For:

This trailing arm set is ideal for Jeep Wrangler JL owners who have lifted their vehicles up to 4 inches and are seeking to correct pinion angle for improved driveline longevity and suspension performance. It is perfect for off-road enthusiasts who demand enhanced articulation and durability, as well as daily drivers who want to maintain smooth, stable handling after suspension modifications. Whether upgrading a stock suspension or complementing a full SuperPro adjustable control arm setup, this kit delivers reliable, precision-engineered performance.

Fitment Summary

• Jeep Wrangler JL 2018–2023 (Sport, Sport S, Rubicon, Sahara, Willys, and special editions)
• Jeep Wrangler Unlimited 2018–2023 (including Rubicon 392, Sahara 4xe, Willys Sport, and other trims)
• Specific models include 80th Anniversary, Freedom, Islander, High Altitude, High Tide, Moab, and others within the 2018–2023 range

SuperPro is an Australian suspension specialist known for high-performance polyurethane bushings, control arms, and sway bar components designed for both 4x4 and performance vehicles. Their parts are built to sharpen handling and improve durability compared with worn factory rubber, making them a common upgrade for enthusiasts chasing tighter response and longer-lasting suspension control.