Description
The majority of current off-road motorcycles have a closed cartridge fork that works much like a rear shock absorber. When the fork is compressed, the damper shaft enters the cartridge body and a volume of oil equal to the volume of the shaft is displaced into an upper chamber. The upper chamber has a floating piston which stops the oil from exiting the cartridge. Force is applied to the floating piston by the pressure spring, the stronger the spring the more resistance on the damper rod. This resistance is known as compression damping. The Merge RRS system uses unique winding methods to produce a pressure spring which gets much stiffer in the end of the stroke where you need it, “Rising Rate”, much like a linkage on the rear suspension and unlike conventional progressive springs.
The Merge RRS simply provides resistance or compression damping at the end of the stroke to help prevent bottoming, and less resistance at the top of the stroke to help absorb those square edged bumps, rocks and roots.
Rising Rate Springs KYB (Medium/Stiff) Pair
USE WITH 2012 (and newer) THICK WALLED TWIN CHAMBER PISTON
The Rising Rate Springs (RRS) front fork cartridge spring provides a performance curve not offered by any other spring to change the speed of your valving, creating a more supple feel over the small stuff and maintaining the resistance to bottoming. It’s like linkage for your forks.
Base Valve assembly NOT included.
Features & Benefits
- Smoother on top, more resistant on bottom
- Simulates rear linkage
- Easy to install
This Product will fit these models
Med-Stiff SKU# 00-035
Honda CRF250R 2010-2014, 2019, 2020
Honda CRF450R 2009-2012, 2018, 2020, 2021
Kawasaki KX450F 2006-2019
Suzuki RMZ250 2018-2021
Suzuki RMZ450 2018-2021
Yamaha YZ125 2006-2015
Yamaha YZ250 2006-2015
Yamaha YZF450 2017-2021
-------------------------------------------------------
Rising Rate Springs KYB (Light/Medium) Pair
USE WITH 2012 (and newer) THICK WALLED TWIN CHAMBER PISTON
The Rising Rate Springs (RRS) front fork cartridge spring provides a performance curve not offered by any other spring to change the speed of your valving, creating a more supple feel over the small stuff and maintaining the resistance to bottoming. It’s like linkage for your forks.
Base Valve assembly NOT included.
This product fits these models
Light-Med SKU# 00-036
Honda CRF250R 2010-2014, 2018-2021
Honda CRF450R 2009-2012, 2021
Kawasaki KX450F 2006-2014, 2019-2020
Suzuki RMZ250 2019-2020
Suzuki RMZ450 2018-2021
Yamaha YZ125 2006-2015
Yamaha YZ250 2006-2015
Yamaha YZF250 2006-2015
Yamaha YZF450 2006-2015
Suzuki RMZ250 2019-2020
Suzuki RMZ450 2018-2021
-------------------------------------
Rising Rate Springs - Showa 47mm (Medium-Stiff) Pair
The Rising Rate Spring (RRS) Showa front fork cartridge spring provides a performance curve not offered by any other spring to change the speed of your valving, creating a more supple feel over the small stuff and maintaining the resistance to bottoming. It’s like linkage for your forks.
- Smoother on top, more resistant on bottom
- Simulates rear linkage
- Easy to install
Base Valve assembly NOT included.
This product will fit these models
Med-Stiff SKU# 00-034
Honda CRF250R 2006-2009
Honda CRF450R 2006-2008
Kawasaki KX250F 2006-2012
Suzuki RMZ250 2006-2012
Suzuki RMZ450 2006-2012
Rising Rate Springs - Showa 47mm (Light-Medium) Pair
The RRS front fork cartridge spring provides a performance curve not offered by any other spring to change the speed of your valving, creating a more supple feel over the small stuff and maintaining the resistance to bottoming. It’s like linkage for your forks.
- Smoother on top, more resistant on bottom
- Simulates rear linkage
- Easy to install
Base Valve assembly NOT included.
This Product fits these models
Light-Med SKU# 00-033
Honda CR250R 2006-2007
Honda CRF250R 2006-2009
Honda CRF450R 2006-2008
Kawasaki KX250F 2006-2012
Suzuki RMZ250 2006-2012
Suzuki RMZ450 2006-2012
---------------------------------------
Rising Rate Springs WP
The Rising Rate Springs (RRS) front fork cartridge spring provides a performance curve not offered by any other spring to change the speed of your valving, creating a more supple feel over the small stuff and maintaining the resistance to bottoming. It’s like linkage for your forks.
Base Valve assembly NOT included.
Features & Benefits
- Smoother on top, more resistant on bottom
- Simulates rear linkage
- Easy to install
This Product will fit these models
SKU# 00-035W
Honda CRF250R 2015-2017
Husqvarna TC 125 2017-2020
Husqvarna TC 250 2017-2020
Husqvarna FC 350 2017-2020
Husqvarna FC 450 2017-2020
Kawasaki KX250F 2013-2019
Kawasaki KX450F 2017-2018
KTM SX125 2016-2020
KTM SX250 2016-2020
KTM SX-F 250 2016-2020
KTM SX-F 250FE 2016-2020
KTM SX-F 350 2016-2020
KTM SX-F 450 2016-2020
KTM SX-F 450FE 2016-2020
Suzuki RMZ250 2013-2015
Suzuki RMZ450 2013-2014
Please indicate your Year/Make/Model in the "special instruction to seller" on shopping cart page, so we can verify sending you the correct part.
Thank You