Progressive Suspension PS1129 Fork springsRef : PRSU00029A / PS1129

Replace the original fork springs with a pair of Progressive Suspension (manufacturer ref. 11-1129) designed to restore comfort and road holding without altering the geometry of your machine. These progressive springs provide a soft initial response to absorb small imperfections, then progressively stiffen to limit bottoming out at the end of the stroke.

Ideal for vintage motorcycles, roadsters, touring bikes, and even sportier setups, they enhance the feel at the handlebars and stability during lean changes while respecting the original travel. Made in the United States, they are supplied in a pair for uniform right/left mounting.

• Outer diameter: 30.40 mm (1.20")
• Length: 470 mm (18.50")
• Spring rate: progressive 0.63 → 0.89 kg/mm (35 → 50 lb/in)
• Packaging: Pair
• Brand: Progressive Suspension — Made in the USA
• Manufacturer reference: 11-1129

Practical compatibility: suitable for Kawasaki W650 (EJ650A), Suzuki VS800 GL Intruder (VS52B), and Honda VT600C Shadow (PC21) — check the dimensions before installation to confirm fitment to your fork. These springs are aimed at riders seeking a balance between riding comfort and dynamic control.