Durham Bicycle releases the "Durham Elliptical" chain ring. Innovative Ovalized sprocket designed to improve pedal efficiency. (IE: Biopace, Etc.)
Bullseye Cycle releases the first sealed bearing aluminum derailleur pulley set. Bullseye Cycle releases the 2nd ever set of Bicycle hubs to use sealed cartridge bearings, the first ever with interchangeable "hollow" single piece axles.
First prototype 2 piece Chromoly steel TIG welded hollow heat treated cranks are manufactured and tested by Roger himself.
Bullseye releases the "hurricane" 2 piece multi-use crank set for public purchase.
Sealed roller brackets, Bottom brackets, Hubs and pulleys, cranks and chain rings manufactured and released.
Bullseye Sealed bearing BMX pedals released. 1981- Durham Bikes releases The "Landing Gear" folding bicycle
March 1982 Hub Ad:
August 1982 Pulleys ad
December 1982 Hub Ad:
July 1983 Hub Ad:
February 1991 Hub Ad:
June 1991 Crank Ad: