Progressive Suspension Series 422 Shock absorberRef : PRSU00150A / 13100854

Progressive Suspension - Series 422 Shock Absorber (manufacturer part no. 422-4001C)

Designed for enthusiasts of roadsters and vintage customs, this Series 422 shock absorber combines road handling with a polished chrome look. This monotube pair features progressive springs, providing a linear then progressive response depending on the load and riding style. The internal element is nitrogen-charged to limit oil cavitation and maintain consistent performance even under demanding use.

• Adjustments: ride height and spring preload adjustable to tailor geometry and comfort.
• Finish: chrome "show" cover for a refined aesthetic on Softail and customs.
• Performance: progressive springs + monotube body for more controlled suspension.
• Height adjustment: can be lowered by up to 2" from stock (confirm clearances and geometry before installation).
• Usage: heavy-duty, internal reservoir, gas-charged damping.

Ideal for Harley Softail 1340 (FXST, FXSTB, FXSTS) and other classic machines where the aim is to improve stance and comfort without sacrificing style. For machines regularly loaded to full capacity, reinforced applications are recommended. Before installation, check wheel clearance and the space between the swingarm/exhaust.