- Replace the stock shaft nut with an asymmetric valve to offer different flow rates for compression and rebound
- The stock low speed rebound adjuster flows at the same rate during compression and rebound which makes the lowest speed damping too mushy, causing bottoming and an unresponsive feeling during long duration hits; shock rebound separator valves correct this issue
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2004-2010 | Honda | CBR1000RR | |
| 2003-2010 | Honda | CBR600RR | |
| 2001-2007 | Honda | CR125R | |
| 2001-2007 | Honda | CR250R | |
| 2004-2024 | Honda | CRF250R | |
| 2019-2024 | Honda | CRF250RX | |
| 2004-2009 | Honda | CRF250X | |
| 2012-2013 | Honda | CRF250X | |
| 2015-2017 | Honda | CRF250X | |
| 2019-2020 | Honda | CRF450L | |
| 2002-2008 | Honda | CRF450R | |
| 2017-2024 | Honda | CRF450R | |
| 2021-2024 | Honda | CRF450RL | |
| 2022-2024 | Honda | CRF450R-S | |
| 2017-2024 | Honda | CRF450RX | |
| 2005-2009 | Honda | CRF450X | |
| 2019-2024 | Honda | CRF450X | |
| 1986-1989 | Honda | FourTrax 250 TRX250R 2x4 | |
| 2002-2008 | Honda | Interceptor 800 VFR800 | |
| 2002-2008 | Honda | Interceptor 800 VFR800A ABS | |
| 1998-2001 | Honda | Interceptor 800 VFR800F | |
| 1999-2007 | Honda | Sportrax 400 TRX400EX 2x4 | |
| 2001-2005 | Kawasaki | KX125 | |
| 2001-2007 | Kawasaki | KX250 | |
| 2004-2016 | Kawasaki | KX250F | |
| 2018 | Kawasaki | KX250F | |
| 2017 | Kawasaki | KX250F KX252AHF | |
| 2020-2024 | Kawasaki | KX450 | |
| 2006-2008 | Kawasaki | KX450F | |
| 2015-2016 | Kawasaki | KX450F | |
| 2018 | Kawasaki | KX450F | |
| 2017 | Kawasaki | KX450F KX450HHF | |
| 2023 | Kawasaki | KX450SR | |
| 2021-2024 | Kawasaki | KX450X | |
| 2011-2012 | Kawasaki | Ninja ZX10R ZX1000J | |
| 2007-2008 | Kawasaki | Ninja ZX6R ZX600P | |
| 2009-2012 | Kawasaki | Ninja ZX6R ZX600R | |
| 2005 | Kawasaki | Ninja ZX6R ZX636C | |
| 2006 | Kawasaki | Ninja ZX6R ZX636D | |
| 2005-2006 | Kawasaki | Ninja ZX6RR ZX600N | |
| 2003-2007 | Suzuki | GSXR600 | |
| 1999-2007 | Suzuki | GSXR750 | |
| 1987-1990 | Suzuki | Quadracer 500 LT500R 2x4 | |
| 2002-2007 | Suzuki | RM125 | |
| 2001-2008 | Suzuki | RM250 | |
| 2004-2011 | Suzuki | RMZ250 | |
| 2005-2012 | Suzuki | RMZ450 | |
| 2006 | Triumph | Tiger | |
| 2007-2008 | Triumph | Tiger 1050 | |
| 2001-2008 | Yamaha | YZ125 | |
| 2001-2008 | Yamaha | YZ250 | |
| 2001-2009 | Yamaha | YZ250F | |
| 2003-2009 | Yamaha | YZ450F | |
| 2004-2006 | Yamaha | YZF R1 | |
| 2003-2008 | Yamaha | YZF R6 | |