Deck Spindle Idler OEM Blade Belt Kit Set Troy Bilt MTD White RZT50 Mustang XP. 8TEN PARTS SKU:15KIT_MK1000259. Compatible with: Troy Bilt RZT-50, Mustang XP, Mustang RZT 50. 8Ten Parts Spindle Idler OEM Blade & OEM Belt Kit. Cub Cadet / MTD / Troy Bilt. RZT-50 / Mustang XP. (3) Spindle Assemblies (3) Idlers (3) […]