Introducing the GP Suspension 20mm Cartridge Kit
Years in the Making, Now Ready for Your Harley
After extensive development and testing, we're proud to release our new 20mm cartridge kit—engineered to deliver the same premium performance as our legendary 25mm system, now for smaller diameter forks.
Manufactured & Built in Ventura County, USA. We maintain complete control over quality and componentry because we never compromise on what matters most: your ride.
Racetrack-Proven Technology, Street-Tuned Perfection
This isn't a budget alternative—it's a high-performance hydraulic system that delivers the same flawless operation our 25mm cartridges proved on the racetrack. We wanted riders with smaller forks to experience the best internal replacement system available, so we spared no expense.
Every kit is custom-built after you order. We know that proper setup is just as crucial as premium components. Whether you're touring cross-country over changing terrain or railing canyons at speed, we dial in your suspension for your specific riding style.
Fully Adjustable, Infinitely Tuneable
- 30 clicks of compression adjustment
- 30 clicks of rebound adjustment
- 12 turns of preload
Set it and forget it, or fine-tune to your heart's content—we guarantee we'll find your perfect setup.
Harley Fitment (1987-2005)
Compatible Models: FXR, FXRT, FXLR, Dyna, and XL series
Specifications:
- 2" over stock length
- Chrome tubes: 24.25" - 26.25" (26.25" recommended for optimal bushing wear)
Transform your Harley's front end with suspension that performs as hard as you ride.
See installation video:
https://www.youtube.com/watch?v=qQg5CtwgOE4
Pricing includes a spring set selected by our setup technician based on your riding information