Complete Guide to 3/5 Suspension Parts for Your Lowered Truck

If you're looking to lower your pickup or SUV by 3 inches in the front and 5 inches in the rear, you need a compatible set of suspension parts. A 3/5 drop is one of the most popular configurations for trucks, giving a aggressive stance while still maintaining decent ride quality and clearance. However, achieving that height requires more than just swapping springs. This guide covers the essential components involved in a 3/5 lowering setup and what to consider when selecting parts for your vehicle.

What Does a "3/5 Drop" Mean?

A 3/5 drop means the front of the vehicle is lowered by 3 inches and the rear by 5 inches relative to stock ride height. This creates a slight forward rake (lower front than rear), which is common on many lowered trucks. The specific parts needed depend on your vehicle's suspension type: most trucks use a coil spring or torsion bar front suspension and leaf springs in the rear, though some newer models have coil springs all around.

Key Components of a 3/5 Suspension Kit

A complete 3/5 lowering kit typically includes multiple parts that work together. Here’s what you’ll likely need.

Front Lowering Springs or Torsion Keys

For trucks with coil springs, the most common way to drop the front 3 inches is with a set of lowering coils. These are shorter than factory springs and have a higher spring rate to prevent bottoming out. For torsion bar suspensions, you'll need adjustable torsion keys that allow you to crank the bars down. Some kits also include new shock absorbers that are shorter to match the reduced travel.

Rear Leaf Springs or Shackles

To achieve a 5-inch drop in the rear, you have options. A common approach is using a flip kit: this moves the axle from on top of the leaf springs to under them, instantly dropping the rear 5-6 inches. Alternatively, you can combine a lowering shackle (which replaces the stock shackle to reduce height) with a shorter spring or a helper coil. Many complete kits include a pair of drop leaf springs that are already arched lower. If you tow or haul often, consider a kit that retains some load capacity.

Shock Absorbers

Lowering a vehicle changes the suspension geometry, so stock shocks may become too long for the reduced travel. Shorter aftermarket shocks are a must. Gas-charged shocks are recommended for better control, and some prefer monotube designs for consistent damping. Ensure the shocks you buy are matched to the drop amount—front and rear shock lengths will differ.

Sway Bars

A lowered truck has a lower center of gravity, but the stock sway bar may contact the axle or control arms. Many 3/5 kits include a sway bar relocation bracket or come with a shorter sway bar end link to maintain proper roll stiffness. If not included, you may need to purchase those separately.

Alignment Components

After lowering, your vehicle will need an alignment, and some adjustments may require aftermarket parts. Lower control arms with offset bushings or adjustable upper control arms can correct front camber and caster. Some trucks need a pinion angle shim for the rear differential to reduce vibration.

Other Miscellaneous Parts

Depending on your truck model, you might need brake line brackets (to prevent lines from being stretched), bump stops (shorter ones to prevent metal-on-metal contact), and a rear sway bar drop bracket. Always check the specific requirements for your year, make, and model.

Choosing the Right Parts for Your 3/5 Drop

Not all 3/5 kits are created equal. Here are factors to consider.

Vehicle Compatibility

The first rule is to get parts designed for your exact vehicle. A 3/5 drop for a Chevrolet Silverado 1500 uses different parts than a Ford F-150. Even within the same model, two-wheel drive and four-wheel drive versions have distinct suspension bits. Always verify before ordering.

Quality and Materials

Look for springs made from SAE 5160 steel or similar high-strength alloys. Coatings like powder coating or e-coating resist rust. Shocks should be from reputable manufacturers and ideally include a warranty. Avoid cheapest unbranded components—suspension failures can be dangerous.

Load Capacity and Ride Quality

A 3/5 drop can make your truck ride stiffer, especially in the rear. If you frequently carry heavy loads or tow, consider adjustable shocks or air helper springs that can be inflated when needed. Conversely, if you want a smooth daily driver, look for progressive rate springs that absorb small bumps without being harsh.

Completeness of the Kit

Some kits are truly complete: they include all springs, shocks, brackets, and hardware. Others are basic and require you to buy shocks or other parts separately. Check the product description carefully. A full kit often saves time and ensures compatibility.

Installation Considerations

Installing a 3/5 drop is a significant job that requires mechanical ability and proper tools. If you're not experienced, professional installation is recommended. Key steps include:

• Safely jacking and supporting the vehicle.
• Removing wheels and old suspension components.
• Compressing coil springs (if applicable) using a spring compressor.
• Installing lower components and torquing all fasteners to spec.
• Bleeding the brake system if you disconnect lines.
• Getting a professional alignment afterward.

Expect to set aside a full weekend if you're doing it yourself. Some parts, like rear leaf springs, can be heavy and awkward.

Final Recommendation

For most trucks, a complete 3/5 lowering kit that includes front coils, rear flip kit or drop leafs, matching shocks, and necessary hardware is the best choice. It simplifies the process and ensures all parts work together. If you prioritize ride quality, opt for a kit with monotube shocks and progressive-rate springs. Always confirm the kit fits your specific year/make/model and consider your load needs. A well-chosen 3/5 suspension setup can transform the look and handling of your truck without sacrificing daily usability.