Fits rear, left & right on the following Arctic Cat ATV models: 1999-2004 250 2x4/4x4, 1998-2004 300 2x4/4x4. Features a stronger than OEM chromoly steel shaft fitted with neoprene boots filled with moly based grease for added wear and puncture resistance * Compressed Length - 436 mm (both). inobard Spline Count - 22 (both), outboard Spline Count- 21 (both) * Replaces OE # 0402-171, 0402-777, 1402-002, 1502-529, 1502-531.