31-4008 PS, asymmetrical fork monotube cartridge kit. Std. height
Fits: 18-25 Softail (excl. inverted fork …
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Iron City Dealer
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Specifications
- Brand
- Progressive Suspension
- Part Number
- 31-4008
- OEM Reference
- —
- Pack Quantity
- Sold as kit
- Category
- Fork Springs
- VAT Rate
- 20%
About This Product
This Progressive Suspension asymmetrical monotube cartridge kit is a complete handling upgrade for 2018 to 2025 Softail models with 49mm forks, excluding those with inverted front ends. The kit features a unique design that puts a threaded preload adjuster over a progressive rate spring in one leg and a high-pressure, nitrogen-charged monotube damper in the other. This setup uses Frequency Sensing Technology (FST) to improve road holding, reduce brake dive, and increase stability through corners. It is a direct replacement for your internal fork components at standard ride height, offering a significantly more controlled and comfortable ride. Sold as a kit.
Manufacturer part number: 31-4008.
Fitment
18-25 Softail (excl. inverted fork models)
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