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EPI Heavy Duty Suspension Spring

(5 reviews)

Item: 326440

$47.32 – $73.73

Select Your Vehicle - Fitment Guaranteed

EPI Heavy Duty Suspension Spring


  • High quality chrome silicon
  • Heavy duty springs are 25% heavier than stock
  • Ideal for use with accessories that add weight, such as plows, winches, cabs, trailers, etc.
  • Sold each
Specification Details
Color Varies (make selection above)
Country of Origin Varies (make selection above)
Free Length Varies (make selection above)
Length Varies (make selection above)
Material Varies (make selection above)
Position Varies (make selection above)
Spring Rate Varies (make selection above)
Type Varies (make selection above)

Vehicle Fitment


Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Can-Am
  • Commander 1000 2011-2015, 2017
  • Commander 1000 XT 2011-2017
  • Commander 800 2011, 2014-2015
  • Commander 800R 2013, 2016
  • Commander 800R XT 2012-2015
  • Defender HD10 2017-2018
  • Defender HD10 XT 2017-2019
  • Defender HD10 XT Cab 2017
  • Defender HD10 XT-P 2018-2019
  • Defender HD8 2017-2019
  • Defender HD8 XT 2017-2019
  • Outlander 1000 2012-2015
  • Outlander 1000 6x6 XT 2015-2016
  • Outlander 1000 XT 2012-2015
  • Outlander 500 2007-2015
  • Outlander 500 XT 2007-2015
  • Outlander 500 XT-P 2010
  • Outlander 570 2016
  • Outlander 570 XT 2016
  • Outlander 650 2007-2021
  • Outlander 650 6x6 XT 2015-2016
  • Outlander 650 XT 2007-2010, 2012-2016
  • Outlander 650 XT-P 2010
  • Outlander 800 2007-2008
  • Outlander 800 XT 2007-2008
  • Outlander 800R 2009-2015
  • Outlander 800R XT 2009-2015
  • Outlander 800R XT-P 2010-2011, 2013
  • Outlander 850 XT 2016
  • Outlander MAX 500 2009-2012
  • Outlander MAX 500 XT 2009-2012
  • Outlander MAX 500 XT-P 2010
  • Outlander MAX 650 2009-2012
  • Outlander MAX 650 XT 2009-2012
  • Outlander MAX 650 XT-P 2010-2011
  • Outlander MAX 800R 2009-2012
  • Outlander MAX 800R XT 2009-2012
  • Outlander MAX 800R XT-P 2010-2012
Honda
  • SXS1000M3 Pioneer 1000 2016-2019
  • SXS1000M3P Pioneer 1000 EPS 2016-2019
  • TRX300 FourTrax 300 2x4 1993-1997
  • TRX300FW FourTrax 300 4x4 1993-1997
Kawasaki
  • Brute Force 650 4x4 2005-2013
  • Brute Force 650 4x4i 2006-2009, 2011-2013
  • Brute Force 750 4x4i 2005-2021
  • Brute Force 750 4x4i EPS 2012-2021
  • Mule Pro-DX Diesel 2017
  • Mule Pro-DX EPS Diesel 2017
  • Mule Pro-DXT Diesel 2017-2018
  • Mule Pro-DXT EPS Diesel 2017-2018
  • Mule Pro-FX 2016-2019
  • Mule Pro-FX EPS 2016-2019
  • Mule Pro-FXT 2015-2019
  • Mule Pro-FXT EPS 2015-2019
  • Prairie 650 4x4 2002-2003
  • Prairie 700 4x4 2004-2006
Polaris
  • 300 2x4 1994-1995
  • 300 4x4 1994-1995
  • 400L 2x4 1994-1995
  • 400L 4x4 1994
  • 455 Diesel 4x4 1999-2001
  • Big Boss 250 4x6 1989-1992
  • Big Boss 250 6x6 1991
  • Big Boss 350L 6x6 1993
  • Big Boss 500 6x6 1998-1999
  • Hawkeye 400 H.O. 2x4 2013
  • Magnum 325 2x4 2000-2002
  • Magnum 325 4x4 2000-2002
  • Magnum 330 2x4 2003-2005
  • Magnum 330 4x4 2003-2006
  • Magnum 330 4x4 w/EBS 2004-2005
  • Magnum 425 2x4 1995-1998
  • Magnum 425 4x4 1995-1998
  • Magnum 425 6x6 1996-1997
  • Magnum 500 4x4 1999-2002
  • Magnum 500 4x4 HDS 2000-2002
  • Magnum 500 4x4 w/EBS 2002
  • RZR 800 2008-2010
  • Ranger 500 2x4 2005-2009
  • Ranger 500 4x4 2005-2007
  • Ranger 500 4x4 EFI 2006-2010
  • Ranger 570 2014-2021
  • Ranger 570 Full-Size 2015-2016
  • Ranger 700 6x6 2006-2009
  • Ranger 800 6x6 2010-2016
  • Ranger Crew 570 Full-Size 2015
  • Ranger Crew 800 2014
  • Ranger Crew 900 2014-2017, 2019
  • Ranger Crew 900 Diesel 2014
  • Ranger Crew XP 1000 2017
  • Ranger Diesel HST Deluxe 2015-2016
  • Ranger HD 700 2009
  • Ranger XP 1000 2018-2019
  • Ranger XP 570 2016
  • Ranger XP 700 2005-2009
  • Ranger XP 800 2010
  • Ranger XP 900 2013-2016
  • Ranger XP 900 Deluxe 2014
  • Scrambler 400 4x4 1995-1996
  • Scrambler 850 2015-2020
  • Scrambler XP 1000 2015
  • Sport 400L 1994-1996
  • Sportsman 335 1999-2000
  • Sportsman 400 1993-1997, 2001-2005, 2011-2014
  • Sportsman 450 2006-2007
  • Sportsman 500 4x4 1996-2001
  • Sportsman 500 6x6 2000-2008
  • Sportsman 500 EFI 2006-2009
  • Sportsman 500 H.O. 2001-2003, 2005-2006, 2008-2013
  • Sportsman 550 2011, 2013-2014
  • Sportsman 570 2014-2021
  • Sportsman 570 SP 2015-2019
  • Sportsman 600 2003-2005
  • Sportsman 700 2002-2006
  • Sportsman 700 EFI 2004-2007
  • Sportsman 800 EFI 2005-2014
  • Sportsman 850 2018-2021
  • Sportsman 850 SP 2015-2019
  • Sportsman MV 700 2005-2006
  • Sportsman Touring 500 2008-2010
  • Sportsman Touring 550 2011
  • Sportsman Touring 570 2015-2016
  • Sportsman Touring 570 EFI 2014-2015
  • Sportsman X2 500 EFI 2006-2009
  • Sportsman X2 570 2015
  • Sportsman X2 700 EFI 2008
  • Sportsman X2 800 EFI 2007-2009
  • Sportsman XP 1000 2015-2016
  • Sportsman XP 850 2011, 2014
  • Sportsman XP 850 H.O. 2014
  • Trail Blazer 250 1990-1995
  • Trail Boss 250 2x4 1986-1995
  • Trail Boss 250 4x4 1987-1990
  • Trail Boss 350L 2x4 1990-1993
  • Trail Boss 350L 4x4 1990-1992
  • Xpedition 325 2000-2002
  • Xpedition 425 2000-2002
  • Xplorer 250 2000-2002
  • Xplorer 300 1996-1999
  • Xplorer 400 1999-2002
  • Xplorer 400L 1996-1998
  • Xplorer 500 1997
  • Xpress 300 1996-1999
  • Xpress 400 1996-1997
Yamaha
  • Grizzly 550 4x4 2012-2013
  • Grizzly 700 4x4 2007-2013
  • Rhino 450 4x4 2006-2009
  • Rhino 660 4x4 2004-2007
  • Rhino 700 FI 4x4 2008-2009, 2011-2013
  • Viking 700 VI 2015-2018
  • YXM7D Viking 700 2014-2021

Customer Reviews

Write Review

Polaris rear spring

By   on  Verified Purchaser

Great part. Very happy


Easy to install

By   on  Verified Purchaser

The springs were easy to install and they are doing exactly what they are supposed to be doing.


Fourwheeler front end service

By   on  Verified Purchaser

Great part! Exact fit!


Part does not fit.

By   on  Verified Purchaser

After checking the fitment guide twice I was sure it was going to work. The spring(s) are too long and do mot fit. 2006 Polaris Sportsman 800 EFI


No problems!

By   on  Verified Purchaser

Great parts...fit was great.


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Questions & Answers

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What is the spring rate for tue EPI Heavy Duty Rear Suspension Springs for a 2012 Polaris Sportsman 800 EFI?

EPI heavy-duty rear shock springs for the 2012 Sportsman 800 are listed at 120 in./lbs. which, they say - is about 25% stiffer than the OEM rear shock springs.

By Staff
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