![PISTON KIT 91.97/STD Polaris Sportsman Touring 500 HO Ranger Crew 500 4x4 Sportsman 500 Rse 4x4 Big Boss 500 6X6 Xplorer 500 4X4 Scrambler 500 4X4 Sportsman Touring 500 Sportsman 500 HO 2X4 Sportsman X2 500 Sportsman 500 Efi Ranger 500 2X4 Sportsman 6X6 500 Ranger 500 4X4 Sportsman 500 Deluxe Sportsman X2 500 Deluxe Atp 500 Ranger 500 6X6 Magnum 500 4X4 Ranger 500 4X4 EFI Magnum 500 2X4 Scrambler 500 2X4 Sportsman 500 HO RSE Sportsman 500 4X4 Ranger 500 4x4 EFI [Midsize] 1996-2013](https://omxsports.com/wp-content/uploads/2025/08/namura_187_50004_1-430x430.gif)
MPN: NA-50004 POLARIS SPORTSMAN TOURING 500 HO RANGER CREW 500 4X4 SPORTSMAN 500 RSE 4X4 BIG BOSS 500 6X6 XPLORER 500 4X4 SCRAMBLER 500 4X4 SPORTSMAN TOURING 500 SPORTSMAN 500 HO 2X4 SPORTSMAN X2 500 SPORTSMAN 500 EFI RANGER 500 2X4 SPORTSMAN 6X6 500 RANGER 500 4X4 SPORTSMAN 500 DELUXE SPORTSMAN X2 500 DELUXE ATP 500 RANGER 500 6X6 MAGNUM 500 4X4 RANGER 500 4X4 EFI MAGNUM 500 2X4 SCRAMBLER 500 2X4 SPORTSMAN 500 HO RSE SPORTSMAN 500 4X4 RANGER 500 4X4 EFI [MIDSIZE] 1996-2013
PARTS
PISTON KIT TWO STROKE 75.97/+1.50 11:1 Polaris Xpress 300 300 2X4 300 4X4 Xplorer 300 4X4 1994-1999
MPN: NA-50003-6 POLARIS XPRESS 300 300 2X4 300 4X4 XPLORER 300 4X4 1994-1999
PARTS
PISTON KIT TWO STROKE 75.47/+1.00 11:1 Polaris Xpress 300 300 2X4 300 4X4 Xplorer 300 4X4 1994-1999
MPN: NA-50003-4 POLARIS XPRESS 300 300 2X4 300 4X4 XPLORER 300 4X4 1994-1999
PARTS
PISTON KIT TWO STROKE 74.97/+0.50 11:1 Polaris Xpress 300 300 2X4 300 4X4 Xplorer 300 4X4 1994-1999
MPN: NA-50003-2 POLARIS XPRESS 300 300 2X4 300 4X4 XPLORER 300 4X4 1994-1999
PARTS
PISTON KIT TWO STROKE 74.47/STD 11:1 Polaris Xpress 300 300 2X4 300 4X4 Xplorer 300 4X4 1994-1999
MPN: NA-50003 POLARIS XPRESS 300 300 2X4 300 4X4 XPLORER 300 4X4 1994-1999
MPN: NA-50002-6 POLARIS SPORT 400L SPORTSMAN 400L 4X4 XPRESS 400L 400L 2X4 400L 4X4 TRAIL BLAZER 400 SCRAMBLER 400 2X4 SCRAMBLER 400 4X4 XPLORER 400L XPLORER 400 4X4 1994-2003
MPN: NA-50002-4 POLARIS SPORT 400L SPORTSMAN 400L 4X4 XPRESS 400L 400L 2X4 400L 4X4 TRAIL BLAZER 400 SCRAMBLER 400 2X4 SCRAMBLER 400 4X4 XPLORER 400L XPLORER 400 4X4 1994-2003
MPN: NA-50002-2 POLARIS SPORT 400L SPORTSMAN 400L 4X4 XPRESS 400L 400L 2X4 400L 4X4 TRAIL BLAZER 400 SCRAMBLER 400 2X4 SCRAMBLER 400 4X4 XPLORER 400L XPLORER 400 4X4 1994-2003
MPN: NA-50002 POLARIS SPORT 400L SPORTSMAN 400L 4X4 XPRESS 400L 400L 2X4 400L 4X4 TRAIL BLAZER 400 SCRAMBLER 400 2X4 SCRAMBLER 400 4X4 XPLORER 400L XPLORER 400 4X4 1994-2003
MPN: NA-50001-6 POLARIS TRAIL BOSS 350L 2X4 TRAIL BOSS 350L 4X4 1990-1993
MPN: NA-50001-4 POLARIS TRAIL BOSS 350L 2X4 TRAIL BOSS 350L 4X4 1990-1993
MPN: NA-50001-2 POLARIS TRAIL BOSS 350L 2X4 TRAIL BOSS 350L 4X4 1990-1993