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Millennium Big Bore Cylinder

Item: 390311

$281.99 – $884.15

Select Your Vehicle - Fitment Guaranteed

Millennium Big Bore Cylinder


  • Just about everything you need to turn your machine into a dirt-eating monster
  • No machining required to complete installation
  • Nickel silicon carbide (NSC) plated cylinders
  • Aluminum cylinder construction
  • Engineered for maximum performance on big-bore cylinder equipped machines
  • Maximum strength, durability, and power
  • Made in the USA
Specification Details
Bore Varies (make selection above)
Compression Ratio Varies (make selection above)
Country of Origin USA
Displacement Varies (make selection above)
Material Aluminum
Size Over Standard 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.

Polaris
  • ACE 570 2015-2018
  • ACE 900 SP 2016
  • General 1000 EPS 2016
  • RZR 4 800 2011-2014
  • RZR 4 900 EPS 2015-2016
  • RZR 570 2012-2018
  • RZR 800 2009-2014
  • RZR 900 2015-2016
  • RZR S 800 2009-2014
  • RZR XP 1000 2014-2016
  • RZR XP 4 1000 2014-2016
  • RZR XP 4 900 2012-2014
  • RZR XP 900 2011-2014
  • Ranger 570 2014-2018
  • Ranger 700 4x4 2007-2009
  • Ranger 800 2010-2011, 2013-2014
  • Ranger Crew 570 2014-2015
  • Ranger Crew 900 2014-2016
  • Ranger XP 900 2013-2016
  • Sportsman 570 2015-2018
  • Sportsman 700 2002-2006
  • Sportsman 800 EFI 2005-2014
  • Sportsman Touring 570 2015-2018
  • Sportsman Touring 570 EFI 2015
  • Sportsman X2 570 EPS 2015-2018
  • Sportsman X2 700 EFI 2008
Yamaha
  • YFM660F Grizzly 660 4x4 2002-2008
  • YFM660R Raptor 660R 2001-2005
  • YFM700 Raptor 700 2013-2018
  • YFM700D Grizzly 700 FI 4x4 2014-2017
  • YFM700FG Grizzly 700 FI 4x4 2007-2013
  • YXC7D Viking 700 VI 2015-2016
  • YXR66F Rhino 660 4x4 2004-2007
  • YXR7F Rhino 700 FI 4x4 2008-2009, 2011-2013

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