I'm not sure of the exact model year but this bike was equipped with Shimano Exage 400 that I've read was produced from 1990-1992. 95mm head tube. I am a gear trader, passing along my old gear and the deals I find to you!
Vintage Diamondback Ascent 15"/Small Frameset - True Temper AVR DB CRO-MO Tubing
Vintage 1991 Diamondback Axis 16.5" C-C True Temper OX CrMo Frame Rockshox Dart+
Vintage 1987 Diamondback Curaca 20" C-C Steel Hybrid Bike Frame Seatpost Saddle
Matrix A5x EP308 INCLINE ARM COVER 0000095212 (ascent trainer) NEW
Matrix A5x A3x LCB controller 1000217256 (ascent trainer) NEW EP308 A3x EP306
Matrix A5x A3x Ascent Trainer POWER SWITCH SET (EP306) NEW 1000206784 (EP605)
