2008 Polaris ATV Outlaw 450/525 Service Manual, Page 80Get this manual
BODYSTEERINGSUSPENSION REAR A-ARM REPLACEMENT ("IRS")
A-arm Removal
123Elevate and safely support vehicleRemove the rear wheel(s)Remove the lower shock bolt from the lower A-arm hole (A) and remove the shock from the A-armLoosen the upper and lower bearing carrier bolts at the wheel end of AarmsH 7Examine Aarm shafts (E), needle bearings (F), seals (G), and thrust washers (H)Replace if worn or damaged
NOTE: Rear A-arm mounts contain needle bearings F