Racing Snowmobile Shaft Kit for Arctic Cat F6 Firecat 600 EFI/F7 700 EFI/Sno-Pro (2005-2006)

Applications:
Arctic Cat Cross Fire 600 All Models 2006, Cross fire 700 EFI 2006, F6 Firecat 600 EFI All Models 2005, F7 700 Fire Cat/EFI/Sno-Pro 2006, F7 700 Fire Cat/EFI/Son Pro 2005, Fire Cat 500 2005 - 2006, Fire Cat 500/Sno-Pro 2005 - 2006, M5 500 Mountain Cat 2005, M6 EFI 2005 - 2006, M6 EFI 600 Mountain Cat 2005, M7 EFI 700 Mountain Cat 2005, ZR 900 2004 - 2005, ZR 900 EFI 2004 - 2006, ZR 900 Sno-Pro 2004 - 2005, ZR 900 Sno-Pro EFI 2004 - 2006

Shaft Material: Heat-treated 4140 chromoly steel engineered for high torsional strength and impact resistance during aggressive racing and deep-snow riding Surface Treatment: Matte black oxide coating to resist corrosion from road salt and slush, while reducing ice adhesion on shaft surfaces in subzero temperatures Included Kit Components: 1 precision-machined performance shaft, 2 pre-lubricated heavy-duty carrier bearings, 4 grade 8 zinc-plated mounting bolts, 2 heat-treated locking snap rings, medium-strength thread locker packet, and step-by-step installation guide Shaft Outer Diameter: 1.375 inches (34.9mm) to match OEM housing and drive sprocket fitment without grinding, shimming, or custom modification Spline Configuration: 32-tooth CNC-machined splines on both drive ends for tight, zero-slop power transfer and reduced spline wear under hard acceleration and heavy load Maximum Power Rating: Rated to support modified high-output builds up to 220 horsepower, suitable for trail racing, mountain backcountry riding, and snowmobile drag applications Bearing Specification: Double-lip sealed high-speed ball bearings pre-packed with low-temperature synthetic grease rated for -40°F to 300°F operation to block out snow, slush, and trail debris Shaft Runout Tolerance: CNC-machined to a maximum total runout tolerance of 0.002 inches to minimize high-speed vibration and extend track drive sprocket and drive chain service life OEM Cross Reference Numbers: Direct drop-in replacement for Arctic Cat factory part numbers 0728-127, 0728-128, 1702-258, requiring no custom adapter brackets or permanent fitment modifications Installation Torque Specification: Included grade 8 mounting bolts require 45 ft-lbs of final torque, with supplied thread locker applied during installation to prevent fastener loosening from high trail and engine vibration Product Weight: 7.2 pounds (3.26 kg), 15% lighter than factory OEM shaft assemblies with 30% higher torsional load capacity Warranty Coverage: 1-year limited warranty against manufacturing defects, covering material failure and premature component wear under normal recreational and competitive racing use