This listing is for a NEW Wiseco brand, big bore piston kit. The part number on this piston is 2429M08600.

Kit consists of piston, rings, pin and clips.

This listing is for 1 piston

Looked the part number up online and found that this will fit the following machines, may fit others too

This item fits the following models:

Arctic Cat Mountain Cat 800 2004 
Arctic Cat Mountain Cat 800 2003 
Arctic Cat Mountain Cat 800 2002 
Arctic Cat Mountain Cat 800 2001 
Arctic Cat Mountain Cat 800 EFI 2004 
Arctic Cat Mountain Cat 800 EFI 2003 
Arctic Cat Mountain Cat 800 EFI 2002 
Arctic Cat Mountain Cat 800 EFI 2001 
Arctic Cat Mountain Cat 800 EFI LE 144 2003 
Arctic Cat Mountain Cat 800 EFI LE 144 2002 
Arctic Cat Mountain Cat 800 EFI LE 151 2002 
Arctic Cat Mountain Cat 800 LE 2004 
Arctic Cat Mountain Cat 800 LE 2003 
Arctic Cat Mountain Cat 800 LE 2002 
Arctic Cat Mountain Cat 800 LE 2001 
Arctic Cat Mountain Cat 800 LE 151 2002 
Arctic Cat Pantera 800 EFI 2004 
Arctic Cat Pantera 800 EFI 2003 
Arctic Cat Pantera 800 EFI 2002 
Arctic Cat Pantera 800 EFI ESR 2004 
Arctic Cat Pantera 800 EFI ESR 2003 
Arctic Cat Pantera 800 EFI ESR 2002 
Arctic Cat ZL 800 ESR 2001 
Arctic Cat ZR 800 2003 
Arctic Cat ZR 800 2002 
Arctic Cat ZR 800 2001 
Type:  Piston
Style:  Forged
Model:  High Performance | Pro-Lite
Size:  86.00mm
Packaging:  Each
Stroke:  76mm
Material:  Aluminum
Bore:  86.00mm
Stroke:  76.00mm
Displacement:  883cc
Note:  +5.00mm over standard bore | Nikasil Bore | Pro-Lite | Cyl head machining required | Cylinder replating required | Cylinder sleeving required
Sold as:  Each