Hollywood Racks Sportrider Se 2 Bike Add-On Kit 2 Bike add on kit for models HR1450 and HR1450R, converts the Sportrider SE to a 4 bike capacity rack. Max weight capacity: 50lbs per bicycle Adjustable wheel holders allow the bike rack to fit up to a 60" wheelbase bike Fits almost any style of bike using a lockable frame hook Attaches to base rack using patented no wobble-no tools tightening system for fast and easy installation