Race Tech Progressively Wound Rear Shock Spring | Gray| P20 (SRSP 6326P20)
- Spring Rate: 454 lb/in
- Race Tech's answer to the linkless PDS system
- Easy fix for the problem of rear suspension being too harsh and too easy to bottom
- Progressive spring gives more resistance to bottoming and supplies a plusher ride
- Made from chrome silicon spring steel, shot-peened, heat-treated and preset to prevent sacking
- The rates get stiffer as the numbers go higher.
NOTE: All KTM with WP PDS shock system (125cc-525cc).
| Compatible Vehicles | |||
| Years | Make | Model | Notes |
| 1998-2010 | KTM | 125 SX | |
| 2007-2008 | KTM | 144 SX | |
| 2009-2013 | KTM | 150 SX | |
| 1998-2005 | KTM | 200 EXC | |
| 1998-2003 | KTM | 200 MXC | |
| 2003-2004 | KTM | 200 SX | |
| 2006 | KTM | 200 XC | |
| 2008-2009 | KTM | 200 XC | |
| 2006-2016 | KTM | 200 XC-W | |
| 1998-2005 | KTM | 250 EXC | |
| 1998-2002 | KTM | 250 MXC | |
| 1998-2010 | KTM | 250 SX | |
| 2005-2010 | KTM | 250 SXF | |
| 2006-2009 | KTM | 250 XC | |
| 2007-2009 | KTM | 250 XC-F | |
| 2007-2010 | KTM | 250 XCF-W | |
| 2007-2014 | KTM | 250 XC-W | |
| 1998-2005 | KTM | 300 EXC | |
| 1998-2005 | KTM | 300 MXC | |
| 2006-2014 | KTM | 300 XC | |
| 2006-2014 | KTM | 300 XC-W | |
| 2017-2018 | KTM | 300 XC-W | |
| 2012-2014 | KTM | 350 EXC F | |
| 2012-2014 | KTM | 350 XCF-W | |
| 1998-2001 | KTM | 380 EXC | |
| 1998-2001 | KTM | 380 MXC | |
| 1998-2001 | KTM | 380 SX | |
| 2000-2002 | KTM | 400 EXC | |
| 2001-2002 | KTM | 400 MXC | |
| 2000-2002 | KTM | 400 SX | |
| 2003-2005 | KTM | 450 EXC | |
| 2008-2010 | KTM | 450 EXC-R | |
| 2003-2005 | KTM | 450 MXC | |
| 2005-2008 | KTM | 450 SMR | |
| 2003-2012 | KTM | 450 SXF | |
| 2008-2009 | KTM | 450 XC-F | |
| 2007-2014 | KTM | 450 XC-W | |
| 2012-2013 | KTM | 500 EXC | |
| 2012-2014 | KTM | 500 XC-W | |
| 2008 | KTM | 505 SXF | |
| 2008-2009 | KTM | 505 XC-F | |
| 2000-2002 | KTM | 520 EXC | |
| 2000-2002 | KTM | 520 MXC | |
| 2000-2002 | KTM | 520 SX | |
| 2003-2005 | KTM | 525 EXC | |
| 2006 | KTM | 525 EXC-G | |
| 2003-2005 | KTM | 525 MXC | |
| 2005-2006 | KTM | 525 SMR | |
| 2003-2006 | KTM | 525 SX | |
| 2006 | KTM | 525 XC-G | |
| 2008-2010 | KTM | 530 EXC-R | |
| 2008-2009 | KTM | 530 XC-W | |
| 2007-2008 | KTM | 560 SMR | |
| 2007-2008 | KTM | 950 Super Enduro R | |
| 2007-2008 | KTM | 990 Adventure | |