SPI shocks are designed to work with OEM bushings, springs and collars.. Sold each. Opened Length: 325mm. Closed Length: 221mm. Eye Diameter Body: 23.8mm. Eye Diameter Shaft: 19.5mmThis item fits the following vehicle applications:compatible with Ski-Doo Expedition LE 4-TEC 1200 2011-2016compatible with Ski-Doo Expedition LE ACE 900 2015-2016compatible with Ski-Doo Expedition LE E-TEC 600 HO 2011-2017compatible with Ski-Doo Expedition SE 4-TEC 1200 2011-2015compatible with Ski-Doo Expedition SE E-TEC 600 HO 2011-2017compatible with Ski-Doo Expedition Sport 550F 2013-2017compatible with Ski-Doo Expedition Sport 550F 2011compatible with Ski-Doo Expedition Sport 600 ACE 2011-2015compatible with Ski-Doo Expedition Sport ACE 900 2014-2015compatible with Ski-Doo Grand Touring 550F Sport 2010-2014compatible with Ski-Doo Grand Touring 600 Sport 2010-2011compatible with Ski-Doo Grand Touring Sport 600 ACE 2011-2015compatible with Ski-Doo Renegade 550F Sport 2010-2012compatible with Ski-Doo Renegade Sport 600 ACE 2011-2016compatible with Ski-Doo Skandic 550F WT 2012-2014compatible with Ski-Doo Skandic SWT ACE 600 2012-2014compatible with Ski-Doo Skandic SWT E-TEC 600 HO 2012-2016compatible with Ski-Doo Skandic WT 550F 2015-2016compatible with Ski-Doo Skandic WT 600 ACE 2011-2016compatible with Ski-Doo Skandic WT ACE 900 2015-2016compatible with Ski-Doo Skandic WT E-TEC 600 HO 2011-2016compatible with Ski-Doo Tundra LT 550F 2012-2016compatible with Ski-Doo Tundra LT ACE 600 2012-2016compatible with Ski-Doo Tundra Sport 550F 2012-2016compatible with Ski-Doo Tundra Sport ACE 600 2012-2016