Coilover sleeve kits provide a cost-effective, modular solution to convert existing standard shock absorbers into a fully adjustable suspension system. They unlock the ability to precisely tune ride height and spring rates to achieve the perfect balance of aesthetic stance and track-day performance.
Unlike lowering springs which offer only a fixed drop, the threaded sleeve design allows you to dial in the exact stance you desire corner-by-corner, whether for car show aesthetics or precise track corner-balancing.
The modular design utilizes standard-diameter race springs, allowing you to easily swap springs to tailor suspension stiffness (spring rate) to your specific driving style, vehicle weight, or track conditions.
By significantly lowering the vehicle’s ride height, you reduce the center of gravity, which minimizes body roll during cornering, sharpens steering response, and increases overall stability at speed.
They provide the core functionality of a full coilover system—height adjustability and performance spring compatibility—at a fraction of the cost by utilizing your existing, healthy damper struts.
The adjustable spring perches help dial in the perfect fender-to-tire gap (wheel gap) and are essential for creating necessary clearance when fitting wider aftermarket wheels and tires.
This kit allows you to easily convert standard hydraulic shock absorbers into adjustable coilovers. It’s a cost-effective way to achieve ride height adjustability without buying expensive pre-built coilover shocks.
Designed for universal fit, the sleeve slides onto your shock body as long as the diameter matches. No complex welding or fabrication required, making it ideal for DIY installations.
Both the sleeve and adjustment rings are made from aerospace-grade aluminum. This lightweight material enhances heat dissipation and is anodized for a sleek, stylish finish.
Equipped with dual locking rings or set screws, the sleeve kit ensures that your ride height settings remain secure, preventing any adjustments caused by vibrations during driving.
The most common inner diameters are 2.0″ or 50mm/52mm. Please measure the outer diameter of your shock body to ensure compatibility.
No, the kit does not include springs. However, we can recommend spring specifications that match the inner diameter (ID) of the sleeve.
Yes, as long as the snap-ring grooves are correctly processed, this kit offers the same safety and reliability as a factory-made coilover shock.
To prevent noise, we recommend applying grease or wrapping tape inside the sleeve during installation to eliminate any gaps that could cause noise.
We offer top hats with various inner hole sizes, designed to fit different shock shaft diameters for maximum compatibility.
We accept T/T, PayPal (for samples), and L/C for large orders. For new customers, 30% deposit and 70% before shipment is standard.
Looking for more details on Johnny Joints? Our Johnny Joints Buyers’ Guide offers comprehensive product information, detailed guides, and related blogs to help you make the best choice.
Our experts offer fast response, design support, and product matching for your mechanical application.
