Name: Radflo 2.5 Air Shock 1-5/8" (1.625") Shaft Assembly
Brand: Radflo Suspension
SKU: AY-SH-6246E
Price: 250.0 USD
Availability: InStock

Radflo 2.5 air shock 1.625 shaft on a white background

$250.00

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The Radflo 2.5 Air Shock with a massive 1.625" (1-5/8") shaft is built for serious off-road performance where strength, tunability, and serviceability matter. Designed for custom suspension systems, rock crawlers, ultra4 builds, and high-performance trail rigs, this 2.5 diameter air shock provides controlled damping and adjustable spring rate in a compact package.

Engineered with velocity-sensitive deflective disc valving and PTFE-coated bronze rod guides, these shocks deliver smooth response while minimizing friction and wear. The SSID alloy steel body with clear cadmium plating ensures durability in harsh environments, while CNC-machined 6061 aluminum components keep weight optimized without sacrificing strength.

Each shock is fully rebuildable and commonly custom-valved to suit specific vehicle weight, geometry, and intended use.

Includes:

(1) Radflo 2.5 Air Shock Assembly
Stroke length selected (8"–18")
Sold Individually.

Shock Diameter: 2.5 Body
Shaft Diameter: 1.625" (1-5/8")
Stroke Length Options: 8", 10", 12", 14", 16", or 18"
Valving: Velocity sensitive deflective disc valving
Rod Guides: PTFE-coated bronze
Body Material: SSID alloy steel with clear cadmium plating
Components: CNC machined 6061 aluminum
Serviceability: Fully rebuildable
Sold: Individually

Universal fitment for custom off-road suspension applications.
Commonly used in:
Rock crawlers
Ultra4-style builds
Trail rigs
Custom tube chassis vehicles
Proper mounting width, hardware size, and valving must be verified for your specific application.

Air shocks combine damping and spring rate into a single compact unit, making them ideal for lightweight custom builds and high-articulation setups. The large 1.625 shaft dramatically increases strength and reduces shaft deflection under extreme side loads — a major advantage in rock crawling and aggressive off-road use.

Because air shocks rely on internal nitrogen pressure to provide spring force, correct tuning of pressure and valving is critical. Custom valving ensures the shock matches your vehicle’s weight bias, suspension geometry, and driving style for predictable control on and off the trail.

Installation Guide

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Radflo 2.5 Air Shock 1-5/8" (1.625") Shaft Assembly

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