Profile 19mm Hop-Up American Bottom Bracket Set - Blue Anodized - USA Made 51mm This is a new production

This is a new production part that is similar in appearance to older GT sprockets

tube spacer and aluminum spacer washers

only difference being we stamped the rear of each set with Genuine Vintage Series and comes in a collectors' tube for safe shipping

This will work with 3/32" or 1/8" chains

Often imitated but never matched in quality or durability

Profile 19mm Hop-Up American Bottom Bracket Set - Blue Anodized - USA Made 51mm This is a new productionFor frames with American BB shells, this Profile Hop Up Kit offers a finished look while providing cups, sealed bearings, a tube spacer, cone washers, and flat washers. The spacers and cups have an anodized finish. This bottom bracket will fit many popular 19mm cranks such as Profile Race, Redline Flight, Fit, DK Social and most any other 19mm crank. Formerly known as the American Bottom Bracket Kit with Hop Up. Color: Blue Manufacturer's Note: This