Electric bike battery rear rack fits 26"-29" bike frame slide rail rear rack silver Alum super light Light weight and strong Battery rack inside rack can hold 5.0" wide 4.0" high 19" long battery or shorter. Designed for the Slide rail type batteries with adjustable and replaceable rail system. --- Can remove the rail to hold a wider battery up to 5.7" wide. Even for non rail type battery its easy to secure battery inside this rack. Has a huge Rubber compression plug that is adjustable to hold the battery in place firmly that is adjustable. ----Has a front mount for your controller box ---- Also comes with the front connection arms that have adjustable angle for fitting many types of bike frames. Total weight of the rack is just one pound ! But can carry up to 40 lbs of cargo ! This is an all Aluminum Bike rear rack that holds battery under the rack so you can still use the top of the rack for cargo. Fits V- brake and Disc brake frame . Same day shipping order by 3 PM ! Only shipping to 48 states ! Also we have original controller box and this rack taillight for sale .