GP Suspension 25mm cartridge kit that has helped national level racers get to the top step of the podium and changed the valving, spring rate, and travel to turn your dyna into a dream. GP knows that good suspension starts with a hydraulic system capable of absorbing every irregularity of the pavement your riding. GP has spent decades working with top level racers to perfect our system. GP has never outsourced any of their machine work or engineering. Everything in your front end is wholly American made in Ventura, CA, and they are proud of this. The end result? More traction, more comfort, and most importantly a ride that really puts a smile on your face. GP takes every rider's weight, and their style of riding into account when building their kit. They know that setup is key to good suspension, and we take pride into giving every rider a kit that is custom made for them. Whether you want a buttery smooth ride to cruise your bumpy home roads, or you want a ride on rails that can take the abuse of a track day. GP has you covered.
The kit is fully adjustable (preload, compression, and rebound). These adjustments can be found on your new fork cap. Some riders prefer to set it and leave it, while some riders like to tinker between setups.
The kit bumps your stroke from 121mm to 125mm. GP works hard on the R&D side when it comes to finding the optimal amount of stroke for every bike.
**Fitment Requirements
Softail Fatbob and Lowrider S 2018-2023
--1" Over Kit -- Can use OEM chrome tubes
--2" Over Kit -- Customer will need to supply chrome tubes
Baggers 2014-2024
--2" Over Length (Requires 24 7/8" Fork Tubes)
--3" Over Length (Requires 25.5" Fork Tubes)
Softail Lowrider ST 2022-2024
--1" Over Kit -- Can use OEM chrome tubes
--2" Over Kit -- Customer will need to supply chrome tubes
Dyna 2006-2016
--2" Over Kit -- Customer will need 27.5" chrome tubes
Dyna 2017
--2" Over Kit -- Customer will need 27.5" chrome tubes
Sportglide 2018-2024
--2" Over - Customer Will Need to Supply 2" Over Fork Tubes