Upgrading to coil over conversion kits can improve ride quality, handling, and overall stability. This guide reviews five popular options, highlighting their fitment, adjustability, and build quality. Whether you drive a heavy-duty truck or a daily commuter, these kits offer varied features to suit different needs, from simple coil-over shims to fully rebuildable systems. Use the buying guide to compare key considerations and select the best match for your vehicle and driving style.
| Product | Brand | Highlights |
|---|---|---|
| ECOTRIC New Coil Over Coil-Over Shock Mount Kit C2047 | ECOTRIC | 6″ height adjustment; rear lower mount; 3″ axle tube; natural finish |
| SUNCORE Front and Rear Active Suspension to Passive Complete Struts | Suncore | Air to coil conversion; includes bypass kit; complete struts |
| QA1 RCK52384 Rear Coil-Over Conversion Kit | QA1 | 1/2″ higher than stock to lower ranges; USA-made; lifetime peace of mind |
| QA1 ALN2000K Pro Rear Coil-Over System | QA1 | Lightweight aluminum body; revalveable; dyno tested |
| Rear Suspension Electronic Air to Passive Coil Over Gas Shocks Kit | Suncore | Air to coil conversion; includes resistors and bypass kit |
Note: The selections focus on compatibility with common rear coil-over conversions and performance-oriented features, while avoiding price specifics to help buyers evaluate value and fitment without price bias.
ECOTRIC Coil Over Shock Mount Kit C2047
The ECOTRIC C2047 kit provides adjustable coil-over shock brackets designed to mimic high-end competition components. It features CNC laser-cut brackets that offer a minimum of six inches of height adjustment, enabling customization of ride height and spring rate. The shock mount is positioned at the rear lower location, with a 3-inch axle tube diameter. Finished in a natural look, these brackets are built for robust durability and straightforward installation, making them a practical entry into coil-over conversion projects for trucks and SUVs.
Key points: adjustable height, rear lower mount, 3″ axle tube, natural finish. The kit aims to deliver a straightforward upgrade path for users seeking a substantial height range without a full suspension overhaul. Potential considerations include ensuring compatibility with existing coil-over shocks and alignment with your vehicle’s weight distribution.
SUNCORE Front And Rear Active Suspension To Passive Struts Kit
The SUNCORE kit converts air/electronic rear suspensions to coil-over shocks, effectively replacing the original air shock components with coil-over units. This kit targets larger GM and Cadillac platform models (Escalade, Tahoe, Suburban, Yukon families) and includes a ride-light bypass kit and resistors to maintain electrical compatibility. Two complete strut assemblies are provided to support the front and rear conversion, offering a comprehensive solution for switching from air to coil-over systems and reducing complexities from integrated electronic modules.
Key points: air-to-coil conversion, electrical bypass included, two complete struts. This option emphasizes a full drivetrain-friendly approach, reducing maintenance associated with air-spring systems. Buyers should confirm the compatibility with their specific model years and check for required wiring adjustments in their vehicle’s control systems.
QA1 RCK52384 Rear Coil-Over Conversion Kit
QA1’s RCK52384 kit is designed for 1978-1996 GM B-Body vehicles, offering a reliable path to a coil-over rear suspension. The kit claims up to half an inch higher than stock while allowing substantial lowering as needed, giving enthusiasts flexibility for performance tuning. QA1 emphasizes a balance between street drivability and track-ready handling, backed by a Limited Lifetime warranty and US-based manufacturing. The construction uses high-quality materials and tested performance to ensure durability under varied driving conditions.
Key points: GM B-Body compatibility, adjustable height, lifetime warranty, US-made. Pros include solid support for classic GM platforms and a focus on rebuildable coil-overs. Consider checking whether the kit’s shock valving is suitable for your typical load and road conditions, and verify compatibility with any factory or aftermarket sway bars.
QA1 ALN2000K Pro Rear Coil-Over System
The QA1 ALN2000K Pro system highlights a lightweight aluminum body with a precision-machined aluminum piston and PTFE piston band. It is designed to convert rear coil-spring setups to adjustable coil-overs, with performance features including dyno-tested performance and a rebuildable design. The system is built for enthusiasts seeking precise adjustability and long-term serviceability, with QA1 backing for maintenance and part availability. The aluminum construction helps reduce unsprung weight, potentially improving ride quality and handling on a variety of road surfaces.
Key points: lightweight aluminum, rebuildable, dyno-tested. This kit suits performance-minded users who value adjustability and serviceability. Buyers should assess whether the system’s valve specs align with their typical driving style and whether the vehicle’s existing mounting points support the kit’s dimensions and weight.
Rear Suspension Electronic Air To Passive Coil Over Gas Shocks Kit
This Suncore kit targets replacements for Cadillac Escalade family vehicles and similar models, converting electronic air shocks to coil-over shocks. It includes a resistors/ride light bypass kit to maintain compatibility with factory electricals. The integration focuses on maintaining ride quality while providing the benefits of coil-over responsiveness and easier maintenance compared with air-activated systems. The kit is positioned as a complete conversion solution for buyers looking to simplify suspension technology while keeping the vehicle’s platform compatibility in mind.
Key points: air-to-coil conversion, bypass kit included. Pros include a comprehensive electrical compatibility package and a clear path to improved handling. Potential drawbacks involve ensuring the kit aligns with specific year-model electrical configurations and the weight distribution of the vehicle, especially in heavier SUVs and trucks.
Front And Rear Air Spring To Coil Spring Conversion 4 Piece Kit
This 4-piece kit specializes in converting front and rear air spring suspensions to coil-over systems, with specific fitment for Cadillac Escalade models from 2007 to 2014. Included are two complete front struts and two rear coil-over shocks, plus resistors and a ride-light bypass kit. The kit’s installation is designed to minimize the complexity associated with dual-spring configurations, offering a more straightforward, low-maintenance path to coil-over performance. Vehicle compatibility and factory electronic integration should be reviewed for a clean installation outcome.
Key points: 4-piece front and rear solution, Escalade compatible, bypass kit included. The kit provides a complete replacement path for those with air-sprung vehicles seeking a coil-over alternative. Buyers should confirm steering knuckle compatibility and inspect the vehicle’s existing electronic controls to ensure a smooth conversion process.
Buying Guide: Key Considerations For Coil Over Conversions
- Vehicle compatibility: Confirm the kit fits your exact make, model, and year. Some kits target specific generations or platforms (GM B-Body, Escalade family, Ram trucks), while others are more universal.
- Construction and materials: Look for aluminum bodies for weight savings, high-strength brackets or CNC-machined components, and corrosion-resistant finishes for longevity in varied climates.
- Adjustability: Decide how many degrees of height and damping adjustability you need. Greater adjustment can allow fine-tuning for handling, ride height, and load scenarios, but may require more setup time and expertise.
- Rebuildability and service: If you plan long-term ownership, choose kits that are rebuildable or come with factory support and serialized dyno testing for track-ready performance.
- Electrical integration: For kits replacing air or electronic suspensions, ensure included bypass resistors and wiring considerations align with your vehicle’s electrical architecture to avoid warning lights or faults.
- Ride quality vs. performance: Coil-overs often trade some comfort for performance. Consider your daily driving style, road conditions, and whether you need highway comfort or track-capable stiffness.
- Installation complexity: Some kits are bolt-on and straightforward, while others require strut removals, alignment, and possible additional brackets or adapters. Evaluate your tools and expertise or plan for professional installation.
- Warranty and support: Check the manufacturer’s warranty terms and whether service centers can support rebuilds or valve changes. This is especially important for performance-oriented components.
- Cost of ownership: Beyond initial cost, factor in potential alignment, maintenance, and possible upgrades to complementary suspension parts (sway bars, control arms, bushings) for cohesive performance.