Convert to polaris rzr 1000 wheels and 29" tires. Designed by Rocky Mountain Bearings our kit will allow you to convert your polaris rzr s 800, rzr 4 800, rzr s, rzr xp 900, rzr 4 xp 900, and rzr xp 4 900 wheels to factory rzr 1000 wheels and 29" tires plus add a 4" wider stance!!! Each spacer adds 2" of width each side for a total of 4"!!!! - Note "this kit will not work with 50" wide polaris vehicles". This order includes four (4) 2" 6061 t6 billet spacers, sixteen (16) 12 mm x 1.5 metric thread hardened studs pressed (installed), sixteen (16) 12 mm x 1.5 metric thread open end installation lug nuts and sixteen (16) 3/8 x 24 installation lug nuts. Our wheel spacer adaptors are made from 6061 t6 billet forged aluminum and feature 10.9 grade studs and hardware. Installation; torque to 87 ft/lbs and we recommend using a red thread locker adhesive Specs & info: quantity: 4 pieces - thickness: 2'' per spacer adaptor - centerbore: 131mm - thread/nuts: m12x1.5 - 4x156 vehicle bolt pattern - 4x156 wheel bolt pattern - 6061 t6 billet aluminum - cnc machined - pressed-in studs - 10.9 grade studs. Note: spacer kit adds 4" width to your front and rear axel - installation is super simple! Our wheel spacer kits come complete with pre-installed studs & installation lug nuts! your factory studs need to be at least 7/8" for proper thread engagement. Will only allow for upgrade to rzr stock 1000 wheels.