This is a rear axle shaft from labworkauto, made for the Polaris Sportsman 500 4x4 from 1996 to 1998.
It's the U-joint type, not CV joint.
Inboard spline count is 36, outboard is 26.
Compressed overall length is 527.5 mm.
Color is black, material is metal with a painted metallic finish.
It's a direct replacement for the left or right rear position.

OE part number is 1380110, and that's the manufacturer part number too.
Made for ATVs, specifically the Sportsman 500.
Brand new, in packaging, includes one axle shaft.
90-day warranty included.

If your Sportsman's axle is clicking, vibrating, or the boot's torn and grease is gone, swap it out.

These old 500s are tough, but axles do wear.
This one is built to factory specs, so it bolts right in.
36 splines inside, 26 at the wheel.
U-joint type means it's the older style, but robust.

Get your 4x4 back in action.
No mods, just remove the old, install the new.
Grease it up before install.

Solid replacement part for a classic machine.