GZYF 12.6" Universal Motorcycle Rear Air Shock Absorbers - Nitrogen-Backed, Adjustable Preload

GZYF 12.6" Universal Motorcycle Rear Air Shock Absorbers are adjustable nitrogen-backed shocks designed to replace or upgrade rear suspension on a wide range of motorcycles, scooters, mopeds and ATVs.

These rear air shocks combine a large CNC-machined reservoir, steel and aluminum construction, and tool-adjustable spring preload to deliver smoother rides, improved control and long-term durability. Designed with a 12.6-inch eye-to-eye length and compatibility across many 150cc–750cc bikes, they suit riders seeking an easy suspension upgrade for street, dirt, and modified machines.

How do these shocks improve ride comfort and control?

The nitrogen-charged design filters out small impacts and manages larger hits, reducing rider fatigue and maintaining wheel contact. A dedicated reservoir helps dissipate heat and sustain consistent damping under sustained riding.

• Gas-assisted damping smooths minor bumps and absorbs big impacts.
• Large CNC aluminum reservoir improves heat dissipation and performance stability.
• Solid steel body with aluminum components resists wear for longer-lasting comfort.

Will these fit my motorcycle or ATV?

Fitment depends primarily on the eye-to-eye length and mounting style rather than vehicle make alone. These shocks are intended for many dirt bikes, scooters, mopeds, quads and street bikes in the 150cc–750cc range, but you should confirm measurements before ordering.

• Eye-to-eye length: 12.6 inches — check your current shock measurement.
• Compatible with many 150cc–750cc bikes, mopeds, scooters and ATVs.
• Suitable for replacement, performance upgrades and custom modifications.

How do I tune the shock for my riding style?

The preload is adjustable using a tool, letting you set spring compression and rebound feel to match passenger load, luggage or riding conditions. Make small adjustments, test ride, then fine-tune for preferred firmness and handling.

• Tool-adjustable spring preload lets you increase or decrease stiffness.
• Adjust for solo riding, two-up riding, or added cargo weight.
• Step adjustments and test rides help dial in optimum traction and comfort.

What materials and construction ensure durability?

These shocks use a combination of hardened steel and aluminum alloy components engineered for longevity under road and off-road stresses. The CNC-machined reservoir is both functional and visually refined, while the overall build minimizes wear from repeated compression cycles.

• Steel main body for impact resistance and structural strength.
• Aluminum alloy reservoir and hardware for lighter weight and heat control.
• CNC machining ensures consistent fit, finish and efficient cooling.

Who is this for?

Riders who want a cost-effective, durable rear suspension upgrade that balances comfort and performance will benefit from the GZYF 12.6" Universal Rear Air Shock Absorbers. Ideal for street riders, commuter scooters, light dirt bikes, ATV owners and anyone modifying their bike where a 12.6" eye-to-eye shock is required. Confirm your motorcycle's eye-to-eye dimension before purchase to ensure correct fitment.