The TrailRunner is a mountainbike model from Koga-Miyata. The TrailRunner sat directly under the top. It borrowed many good features from the RidgeRunner and SkyRunner. TrialRunners were clever composed bikes at a somewhat lower price point, but still far from cheap. Introduced in 1991.
1991-1992: the aluminum TrailRunner
The 1991 and 1992 TrialRunner came with a welded aluminum 7000 frame. Just like the RidgeRunner, but for the TrialRunner in double diamond design, instead of E-stay. Brief frame description: monostay, toptube cable routing, 1-1/8" headtube, 73mm bracket shell, 135 rear spacing, 27.0mm post. Very neat weld quality!
Component specs were identical to the RidgeRunner specs: XT, Syncros, RM-17s. BigChamp fork for '91, FatMax Aluminium for '92. The '91 TrailRunner came also with the distinctive Miyata CO2 cartridges for inflating your tires, while the '92 model had a regular pump as standard equipment fitted.
1993: the TrailRunner Carbolite
The front triangle of the SkyRunner for that year was bolted and bonded to a more economical tail. So the front triangle consisted of svelte cast aluminum lugs bonded to Carbolite carbon tubing using Miyata's Aluminum Pressurized (APA) bonding method, while the tail with its neat Delta Force Monostay now used aluminum instead of Carbolite tubing. Except for the material selection of those 4 tubes all other specs are identical: e.g. still Cobra Chainstays that offer a generous amount of clearance. Up to 2.5" tires can be used.
The frame came finished in classy two tone blue paintscheme with polished tail. The 1993 TrailRunner fork is Miyata's light and sturdy FatMax Aluminum.
Components: pragmatic mix of XT with DX, Syncros cockpit and post