Shimano Dura-Ace 1st Gen GB-100 NOS Vintage English Bottom Bracket Cups Saddle Loops (Required) Weight - 54 g

Weight - 54 g

Made from aluminium and weighing in at 388 grams - incredibly lightweight for a rim at that time

Compatible Cleats - Shimano SPD (SH-71 only)

Stock Code - D-HB29C

Though made in large numbers

Shimano Dura-Ace 1st Gen GB-100 NOS Vintage English Bottom Bracket Cups Saddle Loops (Required) Weight - 54 gOriginal parts produced in the 1970s New old stock! Still unused after all these years Worldwide shipping Shimano Dura Ace left and right bottom bracket cup set, hailing from Japan and in production during the 1970s (yet still new & unused after all this time). Made from steel and weighing in at 78 grams (for the pair). A fine choice for keeping your vintage bike authentic, but also great for any other compatible bike. OVERVIEW Race Condition New Old