Seat Collar, Steel, 1-1/4" OD, 27.2mm ID, 91mm Long w/ 15mm Step, Relieved bbshell two each M5 hexagon locknuts

two each M5 hexagon locknuts

and 51mm hole saws

Shimano Direct Mount road derailleur

Right and left frame frame components: Integrated ISO disc mounts located between the stays

This is the best silver filler available for brazing lugs

Seat Collar, Steel, 1-1/4" OD, 27.2mm ID, 91mm Long w/ 15mm Step, Relieved bbshell two each M5 hexagon locknutsApplication: For 1 1 4" OD x any wall thickness seat tube Step must be finished to size: . 05mm press fit in seat tube Minimum seat post insertion is 91mm Seat post must go past the relief to avoid excess loads on the collar Material: 4130 steel OD: 1. 250" OD ID: 27. 2 mm (+0. 00 0. 05 mm) Relieved ID reduces weight and provides space for weld penetration so that the finish reamer does not have to remove weld material Overall Length: 91 mm OD Step: