Sub-Category
Model
Made In
Fork Boots
Fork Cartridge Dampers, Suspension
Use this installation tool from Cogent to be sure that your Cogent Drop-in Dynamic Cartridges are installed correctly. A strong magnet in the end holds the cartridge firmly while you lower it into your fork leg. Then slide the spring over the tool until it holds the DDC down, then gently remove the tool. That simple. Never again question if it is properly seated on the damper rod.
Works equally well for removal when you need to change your fork oil. Also works great with Race Tech Emulators.
Fork Cartridge Dampers
Damping Rod style forks are notorious for being too harsh, too mushy and too easy to bottom. Gold Valve Cartridge Emulators remedy this problem by controlling the compression damping with a tuneable valve. The Emulator sits on top of the damping rod and is held in place by the main spring.
Simply put; Emulators make damping rod forks perform like well-tuned cartridge forks. Installation and tuning for any condition or rider preference is very straight-forward.
Simple to install and completely tunable for all conditions and rider preferences.
These Cogent Drop-in Dynamic Cartridges will vastly improve both the compression and rebound damping of your stock forks. No disassembly of your forks, no drilling of damper rods. Just change the oil to 5w and install the DDCs under the springs and hit the trails.
Stiffer fork springs are required to realize the full benefits of the DDCs. Please call if you have any further questions.
The DDCs are not recommended for use with progressive springs.
Add the DDC Install/Removal Tool which makes installation much easier.
Fork Seals & Bushings, Suspension
Fork Seals & Bushings
Forks
Shock
The Modoc 250 replacement rear shock significantly upgrades your Yamaha XT250 suspension. Cogent Dynamics custom build this high quality and high performance shock to suit your riding needs.
- Optimized damping rates to give you the best ride comfort, traction and control.
- Frequency and velocity sensing valving works great over wide ranging conditions.
- Rebound damping adjustability.
- Low internal friction.
- All CNC machined components for top quality and performance.
- Compact and rigid design with internal separator piston.
- Fully serviceable shock is designed for the long haul.
Cogent Dynamics build a fully custom suspension component, just for you. To best meet your needs, please spend a few moments providing us with your riding style (off-road / adventure, or street / commuting) and your approximate weight with gear and luggage in the comments during checkout. The information you provide helps them setup your suspension to most closely meet your needs.
Specifications for the Modoc 250:
- Fits: Yamaha XT250 from the new models introduction in 2013 to present.
- Rebound: Over 30 clicks of adjustability
- Spring Preload: Single threaded collar for ease of adjustability
- Travel: 69 mm
- Overall Length: 320 mm
- Spring rate: Selected per customer requirement
- Spring size: 57mm I.D.
- Gas reservoir: Internal separator piston type
Race Tech HP Springs have a high stiffness-to-mass ratio. In other words; the springs are light weight for their particular spring rate. This requires the finest materials and processing. Shot-peened and pre-set so they cannot sack out. All Race Tech HP Springs have the highest rate tolerances in the industry. These are the finest springs in the world-guaranteed.
OEM spring rate is 6.7kg/mm. We offer stiffer spring rates for riders who wish to carry luggage or just prefer stiffer suspension.
Race Tech shock springs require adapter collars which are included with your spring. *Spring color may vary due to specification requirement and availability.
Shock Spring | Qty 1 |
Spring Adapter Collar | Qty 2 |
Spring Adapter Collar 2 | Qty 1 |
8.0 kg/mm is 24% stiffer than stock
Shock Bearings & Seals
Shock Shaft & Valving
Stock suspension suffers from poor compression damping and limp rebound damping. The Race Tech Gold Valve allows you to tune both compression and rebound valving for vastly improved performance.
- Bolt-on shock valving for serious suspension performance
- Improves control, traction, plushness and bottoming resistance
- Improved, long-wearing, low-friction sealing design decreases fade
- Includes complete instructions