Vertex 81.95mm Forged Big Bore Piston Kit (23645A)
- The piston is heat-treated with a T-5 hardening and tempering cycle
- The piston skirt is coated with a high-tech Molybdenum Disulphite coating for faster break in time and increased piston life
- Increases engine's displacement, torque and peak horsepower
- Forged OE stock compression big bore piston
- Piston kit includes piston, rings, wrist pin and circlips
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2010 | Polaris | Ranger 800 6x6 EFI | |
| 2010 | Polaris | Ranger Crew 800 4x4 EFI | |
| 2010 | Polaris | Ranger Crew 800 4x4 EFI EPS | |
| 2010 | Polaris | Ranger HD 800 4x4 EFI | |
| 2010 | Polaris | Ranger XP 800 4x4 EFI | |
| 2010 | Polaris | Ranger XP 800 4x4 EFI EPS | |
| 2010-2011 | Polaris | RZR 4 800 Robby Gordon Edition | |
| 2008-2011 | Polaris | RZR 800 EFI | |
| 2010-2011 | Polaris | RZR 800 EFI EPS | |
| 2009-2011 | Polaris | RZR S 800 EFI | |
| 2009 | Polaris | RZR S Military | |
| 2011 | Polaris | RZR SW 800 Military | |
| 2009-2010 | Polaris | Sportsman 800 6x6 EFI | |
| 2007 | Polaris | Sportsman 800 Deluxe EFI | |
| 2007-2009 | Polaris | Sportsman 800 EFI | |
| 2010 | Polaris | Sportsman 800 EFI HO | |
| 2008 | Polaris | Sportsman 800 EFI Military HO | |
| 2009 | Polaris | Sportsman 800 HO EFI | |
| 2008-2009 | Polaris | Sportsman 800 Touring EFI | |
| 2005-2006 | Polaris | Sportsman 800 Twin EFI | |
| 2007 | Polaris | Sportsman X2 800 Deluxe EFI | |
| 2007-2009 | Polaris | Sportsman X2 800 EFI | |