GZYF 12.6" (320mm) Universal Rear Air Shock Absorber — Nitrogen Reservoir, CNC Tank

GZYF 12.6" (320mm) universal rear air shock absorbers deliver adjustable nitrogen-reservoir suspension designed to upgrade ride comfort and stability on many 150–750cc motorcycles and ATVs.

If you want a single, robust rear shock that suits many dirt bikes, scooters, mopeds and light ATVs, the GZYF 320mm rear air shock is built as a direct-replacement and performance upgrade. Its CNC-machined aluminum reservoir, steel/aluminum construction and tool-adjustable spring preload let you tune rebound and compression feel while improving heat dissipation and longevity.

How will these shocks change everyday riding?

These shocks absorb road irregularities and larger impacts so you feel fewer jolts through the chassis. The nitrogen-charged piston plus large-capacity reservoir helps reduce fade under sustained use, keeping handling predictable during longer rides.

• 320mm eye-to-eye fit for many 150–750cc bikes, scooters, and quads
• Nitrogen reservoir for consistent damping
• CNC aluminum tank improves heat dissipation and performance
• Steel and aluminum body built for durability

Will these fit my HONDA or other motorcycle models?

Compatibility depends primarily on the eye-to-eye length and mounting style rather than brand alone. Measure your current shock’s center-to-center distance and compare to 320mm; if the mounting pattern and diameter match, the GZYF shock is likely compatible.

• Designed for 320mm (12.6") eye-to-eye installations
• Suits many 150–750cc street bikes, dirt bikes, scooters and mopeds
• Check eye-to-eye distance before ordering for reliable fit

How do I fine-tune ride feel with the preload and reservoir?

Adjust spring preload with a simple tool to increase or decrease sag depending on rider weight and cargo. The external reservoir and nitrogen charge stabilize damping; preload plus pressure tuning controls compression and rebound behavior for different riding conditions.

• Tool-adjustable spring preload for rider weight and load tuning
• Reservoir reduces overheating and maintains damping consistency
• Use incremental preload changes to dial in comfort and control

What durability and maintenance should I expect?

Construction uses solid steel and aluminum alloy components to resist corrosion and wear during routine use. Periodic inspection of mounting bushings and seals plus keeping the reservoir and piston clean will extend service life; professional servicing recommended for nitrogen recharging or seal replacement.

• Steel/aluminum build for long-term reliability
• CNC-machined parts for precise fit and improved heat handling
• Periodic seal checks and professional nitrogen servicing advised

Who this is for: Riders who want a single, upgrade-grade rear shock that fits a wide range of mid- to large-displacement bikes, scooters and quads. Choose these GZYF 320mm shocks if you need improved heat control, adjustable preload, and a rugged assembly for street, light off-road, or custom-mod projects. Measure eye-to-eye distance and verify mounting compatibility before purchase to ensure a straightforward installation.