Harley Davidson FX [PROGRESSIVE SUSPENSION] – 412 Series shock absorber

PROGRESSIVE SUSPENSION 412 Series shock absorber for Harley Davidson FX

The 412 Series shock absorbers from PROGRESSIVE SUSPENSION have been specifically developed for rear wheel mounting on Harley Davidson FX motorcycles. These shock absorbers are characterized by a monotube design with a spring sleeve and offer reliable damping for standard applications.

Technical features

• Damper method: Gas filled
• Setting: Automatically
• Spring type: Simple progressive spring rate
• Progressive spring rate: 5.40 kg/mm to 6.25 kg/mm (300 lb/in to 350 lb/in)
• Length (extended): 279.40mm (11.00")
• Material: Steel
• Surface: Chrome plated
• Mounting position: Rear
• Reservoir position: Inside
• Product scope: Pair of shock absorbers

Function and use

The monotube design of the 412 Series shock absorbers ensures consistent damping and improved heat dissipation. Automatic adjustment allows the shock absorber to dynamically adapt to different driving conditions without the need for manual adjustment. The simple progressive spring rate allows for graduated spring stiffness that increases as the load increases, improving comfort and driving stability.

The chrome-plated steel housing provides a robust and durable finish that can withstand the demands of road traffic. The internal reservoir arrangement contributes to the compact design and makes it easier to mount on the rear axle of the motorcycle.

Summary

• Monotube gas shock absorber with spring sleeve for Harley Davidson FX
• Automatic damper adjustment for variable driving conditions
• Simple progressive spring rate for coordinated spring comfort
• Chrome-plated steel housing for durability and protection
• Supplied as a pair for rear wheel mounting

The PROGRESSIVE SUSPENSION 412 Series shock absorbers offer a technically sophisticated solution for optimizing the rear wheel suspension on standard Harley Davidson FX motorcycles.