Like many other makes in those days, also Miyata introduced their 'Elevated Chainstay' concept.
1990 Koga Miyata RidgeRunner
Frame in 7000 series aluminium. Neat, but huge welds. Multiple gussets make this frame probably one of the sturdiest alloy Elevated ChainStay designs.
XT groupset, Odyssey stem and Syncros bar and bar ends. Tange Switchblades forks.
1991 Koga Miyata RidgeRunner
Pretty much the same as the 1990 modell, but with some new components, like Syncros stem instead of Odyssey.
Notice the Miyata typical CO2 cartridges.
Very sturdy HardLite BigChamp forks with brazed dropouts and brakebosses.