1992 990 Trek Bikes Single Track Base

Design
Flat Bar, Hardtail (Front suspension)
Frame
Steel
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Geometry

50cm
Seat Tube Length, Unknown
481mm
Top Tube Length, Effective/Horizontal Unknown
575mm
Head Tube Angle
71deg
Seat Tube Angle
73deg
Bottom Bracket Drop
34.8mm
Bottom Bracket Height
298mm
Chainstay Length
430mm
Chainstay Length Horizontal
428.6mm
Front-Center
634.4mm
Front-Center Horizontal
633.4mm
Wheelbase
1062mm
Fork Offset/Rake
45mm
Trail
67mm
high
Mechanical Trail
63.4mm
Wheel Flop
20.6mm
Standover Height
781mm
Tire to Pedal Spindle
131.5mm
170 mm cranks
Pedal Spindle to Ground Clearance
128mm
170 mm cranks

Base Build

50cm
Wheel Size
26 in
559 mm BSD
Tire Width
2.1in
Tire Outer Diameter
665.7mm
Bike Length with Tires
1727.7mm
Source:http://vintage-trek.com/images/trek/1992/1992TrekBikecatalog.pdf