KK Yoshigai brand name Dia-Compe, is a manufacturer of bicycle components headquartered in Kadoma of the Ōsaka Prefecture, Japan.
Dia-Compe have specialized in caliper and cantilever brakes, headsets, handlebar stems, suspension forks and other bicycle components.

Updated 7.31.2022

DiaCompe made it's first big impression in lightweights with it's ubiquitous Weinmann-style center pull brakes

Diacompe Gran Compe 500 side pull brake set

Advertising for touring brake models

Exploded parts diagram for NGC 400 brakes

(Photo courtesy Yellow Jersey Bike Shop, Madison, WI)

DC 450 center pulls , among the most deluxe CPs made!

Advert for Royal Grand Compe

Aero Gran Compe model

(Photo courtesy Yellow Jersey Bike Shop, Madison, WI)