catazer Mountain Bike Rear Air Shock AO-6 165mm eye-to-eye, Adjustable 150–250 PSI, Lightweight Aluminum

The Catazer AO-6 165mm rear air shock is a lightweight, adjustable air-pressure shock absorber engineered to replace coil shocks and tune rear-wheel compliance across varied mountain terrain.

Built from CNC-machined aluminum alloy with a hard-anodized finish, the AO-6 delivers a strong yet light rear suspension option for mountain bikes, e-bikes, folding bikes and scooters. Pre-charged at 150 PSI and adjustable up to 250 PSI via a standard Schrader valve, it offers easy on-trail tuning and compatibility across five eye-to-eye lengths to match your frame. Low-friction DU bushings and a compact design make installation straightforward while reducing weight for easier climbs.

How does the AO-6 change the ride feel on rough trails?

The AO-6 uses air pressure to control firmness and responsiveness, letting you dial in a plush or firm rear end depending on terrain. Increasing PSI reduces travel compliance for pedaling efficiency on climbs and flats; lowering PSI increases absorption for roots, rocks and choppy descents.

• Adjustable 150–250 PSI range for tailored firmness
• Pre-charged at 150 PSI for out-of-box use
• Air spring provides progressive feel versus linear coil behavior
• Low-friction DU bushings improve smooth pivot motion

Will the 165mm size fit my bike and how do I choose the right length?

AO-6 shocks come in five eye-to-eye lengths: 100, 125, 150, 165 and 190 mm to match a wide range of frames and swingarms. Measure the eye-to-eye distance on your current shock (center to center) and confirm stroke length before ordering to ensure a correct fit and preserve geometry.

• 165mm refers to eye-to-eye length, not stroke
• 8mm×24mm DU bushings match common mounting hardware
• Compatible with mountain bikes, e-bikes, folding bikes and scooters
• Always compare both eye-to-eye and stroke measurements

How easy is it to adjust and maintain the AO-6?

Adjustment is simple: use any standard bike pump with a Schrader head to add or reduce air through the valve. Routine checks include verifying pressure before rides and inspecting bushings and mounting hardware; the CNC-machined aluminum body and hard-anodized finish minimize corrosion and reduce routine upkeep.

• Use standard pump to change PSI quickly on trail
• Pre-charged for immediate installation and testing
• Hard-anodized aluminum resists corrosion and wear
• DU bushings are low friction and long-lasting

What performance benefits can I expect compared with coil shocks?

The AO-6 is significantly lighter than typical coil shocks, improving climbing efficiency and accelerating responsiveness. Air springs offer more tunability for rider weight and terrain, while the alloy construction maintains strength without the weight penalty of steel coils.

• Weighs less than half of many coil shocks for easier climbs
• Air pressure tuning adapts to rider weight and trail conditions
• Progressive spring rate reduces bottom-outs on big hits
• CNC body provides stiffness and long life with minimal weight

Who is this for: the Catazer AO-6 165mm rear air shock suits riders who want to drop weight, tune rear compliance on varied terrain and fit a modern air shock into mountain bikes, e-bikes, folding bikes or scooters. It’s aimed at cyclists who already know their bike’s eye-to-eye and stroke requirements and want a durable, low-maintenance replacement that offers quick trail-side pressure adjustments and improved climbing performance without compromising strength.