Diamondback Topanga DB Series 17 in MTB bike Avenir Weinmann Shimano Altus A20
Rims: Weinmann 2719 alloy made in USA with Avenir tires. 1990's MTB bike Diamondback Topanga DB Main Series. crankset: triple crankset Shimano Altus A20 VIA Japan. rear derailleur: Shimano Altus A20 made in Japan 7 SIS integrated.