Vintage Shimano BIOPACE Double Chainring Set 52/42T

Up for sale is late 1980’s vintage Shimano BIOPACE double chainring set with chainring bolts.  52/42 tooth steel chainrings with 130mm BCD compatible with Shimano 2 x 6/7-speed SIS systems with Shimano chainring bolts included. Ultra-low mileage with very little chain wear, please see pictures. We ship to lower 48 states only. Worldwide shipping available by Ebay Global Shipping Program, buyer is responsible for additional costs. 

SR Cycles Ref.; 2023-59-69128