American Custom Bicycles in Steel, Titanium and Ti/carbon mix

Internal Seat Post Binder

Internal Seat Post Binder

Our new titanium internal binder system improves upon our nearly 20 year-old design by introducing a new weld technique that is lighter and lends the frame a cleaner look. We save 40 grams of weight by eliminating the standard, external seat binder and reducing the seat tube extension. The system hides neatly beneath the top tube/seat tube junction, which produces an aesthetic similar to an integrated seat post system. It has the style of an ISP without the significant performance downsides.