49MM HEAVY DUTY FORK SPRING KIT PROGRESSIVE SUSPENSION HARLEY-DAVIDSON SOFTAIL AND TOURING

Optimize the response and stability of your motorcycle's front suspension with the Heavy Duty fork spring kit by Progressive Suspension. Specifically designed for 49 mm forks, this reinforced hardness kit replaces the original set, providing a progressive behavior: it absorbs road irregularities with smooth firmness and prevents the suspension from bottoming out during heavy impacts or demanding braking. Made from high-quality chrome-silicon wire and precision-wound, they are the ideal solution for riders seeking greater firmness, who regularly carry luggage, or travel with a passenger.

Technical Features

• Brand: Progressive Suspension
• Product Type: Reinforced Progressive Fork Spring Kit (Heavy Duty)
• Fork Diameter: 49 mm
• Spring Rate: 45/65 lbs/inch
• Material: Precision-wound chrome-silicon alloy wire
• Kit Content: Pair of progressive springs and 2.62 inches (6.65 cm) spacer bushings
• OEM Equivalent References: 45500337, 45500456, 45500373, 45500385, 45500447

Compatibility

• Harley-Davidson Softail: Models from 2018 to 2025 with conventional 49 mm fork (FLDE Deluxe, FLI Hydra Glide Revival, FLHC/FLHCS Heritage Classic, FLSL Slim, FXBB/FXBBS Street Bob, FXBR/FXBRS Breakout, FXLR Low Rider, FLFB/FLFBS Fat Boy, FXST Softail Standard, etc. Excludes models with inverted forks).
• Harley-Davidson Touring / FLT: All models from 2014 to 2025 (Excludes CVO models from 2023 to 2025 with inverted fork and FLHTKL Low from 2017 to 2019).

Installation and Assembly

For proper adjustment, correct hydraulic oil level, and maximum driving safety, it is recommended that the installation of this product be carried out by a professional motorcycle workshop or mechanic.