Air vs Coil MTB Shocks: Which One is Right for You?
When it comes to upgrading or fine-tuning your mountain bike, the age-old debate between air and coil shocks continues to be a hot topic among riders. Both options have distinct characteristics, strengths, and trade-offs, making them suited for different riding styles, terrains, and personal preferences. Let’s take a closer look at what sets these two types of shocks apart and how to choose the right one for your riding needs.
Understanding the Basics
At first glance, it’s easy to distinguish an air shock from a coil shock. Air shocks feature a pressurised canister that uses compressed air to support weight, while coil shocks utilise a metal spring wrapped around the shock body. Both types come equipped with dampers, which manage the motion of the shock as you navigate rough trails.
Air Shocks: Lightweight and adjustable, these shocks provide a lively and playful feel. Adjusting sag or tuning performance requires nothing more than a shock pump or volume spacers, making them beginner-friendly and versatile.
Coil Shocks: Renowned for their unmatched traction and small-bump sensitivity, coil shocks excel in rough, technical terrain. However, finding the right spring rate often requires trial and error, which can add to the setup cost.
Pros and Cons of Air Shocks
Advantages
Easily adjustable spring rate using a shock pump.
Lighter weight—typically around a pound less than a coil shock.
Natural progression makes it suitable for a wide range of frame designs.
Disadvantages
Requires regular air pressure checks.
Performance can be affected by changes in temperature and altitude.
Increased stiction due to more seals in the system.
Pros and Cons of Coil Shocks
Advantages
Superior traction and ground-hugging performance.
Minimal friction enhances sensitivity, especially over rough terrain.
Less frequent servicing compared to air shocks.
Disadvantages
Heavier than air shocks, which may impact bike handling.
Dialling in the correct spring rate often involves buying multiple springs.
Works best with frames featuring progressive suspension leverage curves.
Setup and Tuning
Both air and coil shocks are capable of delivering premium performance when properly tuned. With air shocks, sag and progression adjustments are straightforward, thanks to the ability to add or remove air or volume spacers. Coil shocks, on the other hand, require a more tailored approach, as adjustments depend on swapping out springs to match your bike’s kinematics and your weight.
For riders who love tweaking their suspension, both options offer highly adjustable dampers. High-end shocks like the RockShox Super Deluxe and Fox DHX2 provide low-speed and high-speed compression and rebound adjustments for dialled performance.
Performance in Action
If you prioritise a playful, poppy feel that supports jumps and manoeuvres, air shocks are a great choice. Their natural progression helps prevent bottoming out, making them ideal for trail bikes and aggressive riding styles. On the other hand, if your riding involves steep, technical descents and you crave maximum traction, a coil shock’s linearity and small-bump sensitivity provide a significant advantage.
Maintenance and Cost
Air shocks generally require more frequent servicing, including air can maintenance and damper work, while coil shocks only need damper servicing. However, the cost of multiple springs when setting up a coil shock can offset its lower maintenance frequency.
Which Shock Should You Choose?
Choosing between an air or coil shock depends on your riding style, terrain, and personal preferences.
Go for an air shock if you want an adjustable, lightweight option with a lively feel.
Opt for a coil shock if you prioritise traction and small-bump sensitivity for technical trails.
Ultimately, neither is objectively better; it’s all about what fits your bike and riding needs.
Join the Conversation
Got a favourite shock setup or tips for dialling in your suspension? Let us know in the comments below! Share this article with your riding buddies, and check out more expert advice on our blog to keep your mountain bike performing at its best.
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