The best option for sway control and weight distribution for your 2009 Jayco Jay Feather 17C that has a tongue weight of 400 lbs is the Reese Strait Line part # RP66082 which has a tongue weight range of 200-600 lbs and features the best sway control at fighting to prevent sway from starting.
For a hitch ball then you'd want the # A-90 and you'd be set. view full answer...