Progressive Suspension 04140452 Fork springsRef : PRSU00035A / 04140452

Enhance the behaviour of your front end with this monotube fork cartridge kit by PROGRESSIVE SUSPENSION. Designed to replace the dual tube setup with high-performance gas monotube cartridges, it includes monotube cartridges and custom fork springs for a more linear response and a firmer road feel without structural modifications to the fork.

• Manufacturer reference: 31-2515
• Fork tube diameter: 39.00 mm (1.54")
• Style: Gas monotube
• Height adjustment: Standard
• Unit: Complete kit

This kit aims to limit dive under braking, improve front stability, cornering grip, and bottoming management through a more efficient cartridge and springs tailored to the weight and geometry of a roadster. No machining of the fork is required for installation. Lowering versions are available and can lower the front by up to 2"; please note that lowering kits are not compatible with "Low" models.

Made in the USA, this kit will particularly suit the Harley-Davidson machines listed as fitment examples (e.g. Forty‑Eight XL1200X, Forty‑Eight XL1200X ABS, Iron XL883N — 2015 models). Please check the precise compatibility with your model before ordering.