320mm Motorcycle Rear Air Shock Absorbers - Smooth Ride Upgrade

In this review the 320mm Motorcycle Rear Air Shock Absorbers are judged as a practical replacement and upgrade for midrange dirt bikes, ATVs and go karts that use a 320mm eye to eye distance. The biggest reason to buy is improved ride quality: the rear nitrogen air design and large CNC reservoir help dampen bumps and reduce fade under sustained use, making them a clear choice for riders wanting a more controlled, comfortable ride without a full suspension rebuild.

Key Features

• 320mm Eye to Eye: Matches the critical mounting dimension for many 150cc to 750cc street bikes and quads so fit is straightforward when measured correctly.
• CNC Aluminum Reservoir: The large capacity tank is CNC machined from aluminum to aid heat dissipation and maintain consistent damping under heavy use.
• Nitrogen Charged: The rear nitrogen shock filters out minor bumps and absorbs bigger impacts for a smoother, more controlled ride.
• Solid Construction: Built from steel and aluminum alloy for durability and to withstand typical offroad and street conditions.
• Adjustable Spring Preload: Tool adjustable preload lets riders fine tune compression feel and rebound to match load or riding style.

Who It's For

The shocks are best for owners of dirt bikes, scooters, mopeds, ATVs and small street bikes in the 150cc to 750cc range who can confirm a 320mm eye to eye mounting distance. Riders looking for an affordable way to upgrade factory shocks for improved comfort and stability will appreciate the nitrogen charging and reservoir design.

These are not aimed at riders who need modelspecific, OEM replacements with exact manufacturer part numbers or those who cannot verify eye to eye fitment; buyers who need custom valving or racespec suspension tuning should look at higherend shock manufacturers.

Pros & Cons

Pros

• Improves ride quality and smoothness compared with many stock units.
• Adjustable preload and nitro charge offer useful tuning options for different loads.
• CNC reservoir and alloy construction help with heat management and durability.

Cons

• Fit depends entirely on the 320mm eye to eye measurement, so buyers must verify before purchase.

Specifications

Our Verdict

These 320mm rear air shock absorbers are a solid value for riders who can confirm the eye to eye fit and want a noticeable improvement over typical stock shocks. The CNC reservoir and nitrogen charge deliver steadier damping and the preload adjustment provides usable tuning, making them a practical upgrade for street, dirt and quad use without a big investment.

Frequently Asked Questions

How do I know if these will fit my bike?
Measure the current shock eye to eye distance; if it is 320mm these shocks are designed to match that mounting dimension.

Can the preload be adjusted on the fly?
The preload is adjustable with a tool so it can be changed between rides to suit load and comfort, but it is not a rapid hand knob adjustment.

Are these suitable for heavy offroad use?
The alloy reservoir and steel construction improve durability and heat dissipation, but riders expecting racelevel valving or extreme offroad abuse should consider purposebuilt race shocks.