Choosing a rear coilover conversion kit can transform handling, ride quality, and overall vehicle stance. This guide highlights five well-regarded options and explains key features to help you compare performance, compatibility, and installation considerations. Each kit converts a rear coil-spring setup to an adjustable coil-over system, offering customizable ride height and damping for improved control on the street or track.
| Product | Brand |
|---|---|
| BMR Suspension – Coilover Conversion kit, Rear, Adjustable Shock mt, w/CAB | BMR |
| Strutmasters Rear Air Suspension Conversion Kit for 2007-2013 Ford Expedition (FX3RB) | Strutmasters |
| BMR Suspension – Coilover Conversion kit, Rear, Non-adj Shock Mount, w/o CAB | BMR |
| QA1 RCK52384 Rear Coil-Over Conversion Kit for 1978-1996 GM B-Body | QA1 |
| BMR Suspension – Coilover Conversion kit, Rear, Adjustable Shock mt, w/o CAB | BMR Suspension |
| QA1 ALN2000K Pro Rear Coil-Over Conversion System Kit | QA1 |
| ECOTRIC Adjustable Rear Lower Coil Over Shock Mount Kit Universal Steel Lower Brackets for Coil Overs Shock Brackets | ECOTRIC |
Below is a closer look at each option, including what makes it stand out, typical benefits, and practical notes for installation and maintenance. The selections emphasize a mix of traditional adjustable rear coilovers and conversion kits that upgrade or adapt existing rear suspension hardware for better adjustability and ride quality.
BMR Suspension Coilover Conversion Kit, Rear, Adjustable Shock with CAB
The BMR kit positions itself as a leading suspension solution with a focus on user-friendly design and fitment. Featured as an adjustable rear shock mount solution with a coilover-capable framework, this kit can help fine-tune ride height while maintaining structural integrity. Its design intent revolves around delivering a balanced combination of performance and ease of use, appealing to enthusiasts seeking a straightforward upgrade path without sacrificing reliability. Installation considerations include aligning mounts and ensuring proper clearance for the chosen coilover shocks and springs.
Strutmasters Rear Air Suspension to Coilover Conversion (Ford Expedition FX3RB)
This kit targets users seeking a complete conversion away from air suspension toward a coilover-compatible setup. It promises cost savings and a refreshed ride quality with all-new components. While air-to-coilover conversions can yield improved handling responsiveness, installation may involve adapting mounting points and ensuring compatibility with factory or aftermarket control systems. Potential benefits include improved damping range and predictable behavior under load, especially for heavier rear axles or loaded conditions.
BMR Suspension Coilover Conversion Kit, Rear, Non-Adjust Shock Mount
This variant emphasizes a non-adjustable shock mount design while still enabling a transition to coilover-style shocks. It highlights BMR’s emphasis on robust mounting points and compatibility with widely available coil-over shocks and springs. The kit’s construction typically includes a drilling template for precise mounting and ensured alignment. For users, this option may appeal if they value a solid, reliable base kit without the complexity of external damping adjustments yet still want improved geometry and ride consistency.
QA1 RCK52384 Rear Coil-Over Conversion Kit for GM B-Body
QA1’s kit is positioned as a performance-focused solution with a dyno-tested approach and a rebuildable design. It enables a height adjustment range that can place the vehicle closer to performance alignment, potentially increasing cornering grip and reducing squat under acceleration. The kit’s aluminum body and precision piston contribute to a lighter, stiffer package. Notable advantages include rebuildability and the possibility of factory or authorized service support. Installation suitability rises with the GM B-Body’s available mounting points and compatibility with QA1 components.
BMR Suspension Coilover Conversion Kit, Rear, Adjustable Shock Mount w/o CAB
This version emphasizes an adjustable rear shock mount without a cross-axle brace option (CAB). It reinforces upper A-arm mounts and facilitates the use of commonly available coil-over shocks and springs. A drilling template is included to ease installation by guiding precise cutting with a hole saw. Practically, this kit suits builders who want flexibility in selecting preferred coilover components while maintaining robust chassis reinforcement. Attention should be paid to clearance and alignment during the mounting process to ensure consistent ride behavior.
QA1 ALN2000K Pro Rear Coil-Over Conversion System
QA1’s ALN2000K Pro system highlights a high-end, adjustable coil-over setup designed for enthusiasts seeking precise damping control and adjustability. The package emphasizes lightweight aluminum construction, a precision-machined aluminum piston with a PTFE piston band, and a full dyno-tested, serialized product line. The kit is rebuildable by QA1 or authorized service centers, appealing to owners who value long-term serviceability and predictable performance. Installation considerations include ensuring chassis compatibility and verifying access to appropriate mounting points for a proper seal and alignment.
ECOTRIC Adjustable Rear Lower Coil Over Shock Mount Kit
ECOTRIC presents a universal lower coil-over shock mount kit designed for versatility. Supplied with machined spacers and weld-on housing brackets, it aims to accommodate various coil-over shocks and provide a customizable mounting solution. The kit’s design focuses on durability and adaptability for users who want to upgrade suspension without replacing the entire subframe. Installation considerations include compatibility with existing suspension geometry and ensuring strong, clean welds for long-term reliability.
Buying Guide: Key Purchase Considerations
- Vehicle compatibility: Confirm fitment for your make, model, and rear suspension layout. Some kits are vehicle-specific, others universal with adapters.
- Adjustability vs. simplicity: Adjustable coilovers offer precise tuning but may require more setup time. Non-adjust options provide straightforward improvements with less complexity.
- Mounting hardware and compatibility: Check for reinforced upper A-arm mounts, drilling templates, or compatibility with existing brackets to avoid clearance issues.
- Build quality and materials: Aluminum bodies and precision pistons tend to offer better weight reduction and durability. Look for reputable brands with a history of testing and serviceability.
- Serviceability: Rebuildable or dyno-tested systems can be advantageous for ongoing maintenance and performance tuning.
- Ride quality vs. performance goals: Street comfort often benefits from damping ranges and alignment options, while track-focused setups prioritize stiffness and predictability.
- Installation considerations: Some kits require professional alignment, custom drilling, or welding. Budget time and potential welding needs into the project plan.
- Maintenance and warranty: Consider the availability of replacement parts and whether the kit includes a warranty or access to service centers.
When evaluating options, compare each kit’s intended use, mounting requirements, and upgrade path. Look for clear installation instructions, compatibility notes, and evidence of performance testing or user feedback. The right rear coilover conversion kit depends on your vehicle, driving goals, and willingness to invest in setup precision and ongoing maintenance.