Shimano road bike groupset 2×7 downtube / rim brake. 90′s. TBC GROUP2 Posted December 25, 2023 Shimano road bike groupset 2×7 downtube / rim brake. 90′s. TBC GROUP2Shimano road bike groupset 2×7 downtube / rim brake. Will add details stay tuned. Temp listing For vintage frame 700c for rim brake for Dow tube shift.