Helper Springs VS Add a Leaf [Similarities And Differences]

Manufacturers of utility vehicles such as light-duty trucks, pickup trucks, vans, and SUVs design them to have a heavier carrying capacity than passenger vehicles.

Still, sometimes, stock springs cannot support a heavily loaded payload. That’s the reason why owners of heavy vehicles strive to upgrade their suspensions. They do so by simply upgrading existing springs to avoid slumping on the rear end.

Two of the best options a garage mechanic may recommend are helper springs and adding a leaf. Both provide excellent load support but have subtle differences. We’ll discuss how helper springs vs. add a leaf work, their similarities and differences, and most especially, which one is better.

Based on our team’s knowledge and additional research on relevant content, we concluded that add a leaf are superior to helper springs. We say so because add a leaf reduce more body roll, is low-maintenance, and essentially adds a better lift.

Which Is Better?

In giving your truck or utility vehicles an extra lift, we favor add a leaf vs. helper springs because of its easy installation. Add a leaf kits provided by sellers are packaged complete.

Also, they come with a center pin. You can choose to utilize factory U-bolts or have them purchased separately. Additionally, leaf springs are cheaper due to their simple structure and lesser production costs.

About Helper Springs Or Coil Springs

Helper springs are coils added above, below, or on the main spring. They support the main spring and keep it in place whenever a vehicle turns or adds weight to one or more corners.

A helper spring works best for road users who prioritize ride quality and towing capacity. On top of that, a helper spring provides progressive rate suspension; it means that as your load in the truck increases, the helper spring resistance will also progressively increase.

About Helper Springs Or Coil Springs

Another type of helper spring is air springs, and they absorb shock the same way a spring does, except that air bags use pressurized air from a pump to stabilize a ride.

Most community links search forums recommend this type, but we will say otherwise as this is maintenance-heavy. Rubbers in bags tend to wear over time, letting air out, in turn, losing their effectiveness.

About Add A Leaf Or Leaf Springs

Leaf springs are the most basic forms of suspension. They date back to the Roman period when people realized they needed to smoothen out their chariot ride when driving on rough surfaces.

This damping structure has stood beyond the test of time as models like Chevy Silverado adapt almost the same leaf spring used in ancient times.

About Add A Leaf Or Leaf Springs


U-bolts and a center pin keep a series of bent rectangular steels of different lengths stacked in place. Add a leaf kit to allow more attachment to an existing leaf spring, essentially adding load support to the truck’s spring capacity.

Brand Features

Brands such as Dayton Add a Leaf comes with extra leaf kits. They are packaged complete with necessary hardware such as U-bolts, extra taper leaves, and a center pin.

However, you can also utilize factory U-bolts to add leaves alongside the rebound leaf. Make sure to mount model-specific leaves to your very vehicle as Dayton Add a Leaf has a wider variety of add a leaf kit.

Similarities Between Coil Spring & Leaf Spring

Other models such as Hellwig refer to their extra leaf kits as a helper spring. A related thread also refers to Hellwig as helper springs as they enhance the function of a leaf spring, acting as a brace to prevent rear springs from sagging.

Other products such as Sumo Coil Helpers attach to the mainspring to increase load capacity. We’ll refer to helper spring as coil spring to avoid confusion between these types.

Both add a leaf, and coil springs provide added carrying capacity, and supply load support on the rear suspension. Also, these two suspension types utilize HD spring, making a truck spring capacity greater.

Similarities Between Coil Spring &Amp; Leaf Spring

Differences Between Coil Spring & Leaf Spring

A discussion starter on forums-recommended communities asked about how to add a leaf vs. helper springs differ. Users compare both by tuning and supplying load support.

Their main difference is to add a leaf kit has a lesser tuning capacity than coil springs. Some Google threads show posts that add a leaf kit are unsuitable for light-duty trucks with varying driving styles and terrain types.

Since add, a leaf kit gives an exact level or constant rate resistance, unloaded ride quality may not be good. Meanwhile, an advantage of adding a leaf kit is giving your truck a lift.

Coil springs may give you a stable ride, but it doesn’t provide much height for a truck’s rear, essentially adding only progressive resistance.


Tilting or sagging in a truck increases when attached to trailers or loaded with heavy equipment, ultimately affecting its brakes and handling.

Simply upgrading a suspension makes your HD spring capacity greater. For that, we recommend add a leaf because it’s affordable, offers heavier rear carrying capacity, and is easy to install.

The main difference between helper springs vs. adding a leaf is the former progressively increases resistance. Meanwhile, the latter has a constant rate of load damping.

Add a leaf is a perfect choice despite the difference as the spring shop offers to add a leaf kit with an extra taper leaf. They provide your very vehicle with the necessary hardware without too much maintenance.

Add a leaf kit are a suitable addition to mount to a rebound leaf to attain the exact level of your truck lift.

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