1997 Trek Bikes 850 Base

Category
Rigid MTB
Design
Flat Bar, Rigid, suspension corrected
Frame
Steel
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Average stack and reachvs category

Geometry

13in
16.5in
18in
19.5in
21in
22.5in
Stack
494.8mm
492.8mm
492.6mm
511.5mm
549.2mm
584.9mm
Reach
387.4mm
402.2mm
414mm
417.3mm
416mm
409.5mm
Stack to Reach Ratio
1.28:1
1.23:1
1.19:1
1.23:1
1.32:1
1.43:1
Seat Tube Length, C-T
330.2mm
419.1mm
457.2mm
495.3mm
533.4mm
571.5mm
Top Tube Length, Effective/Horizontal HT Top
540mm
555mm
570mm
580mm
590mm
600mm
Head Tube Angle
70deg
70deg
70.5deg
70.5deg
70.5deg
70.5deg
Seat Tube Angle
73deg
73deg
72.5deg
72.5deg
72.5deg
72deg
Head Tube Length
85mm
85mm
85mm
105mm
145mm
185mm
Bottom Bracket Drop
41.8mm
39.8mm
37.8mm
37.8mm
37.8mm
35.8mm
Bottom Bracket Height
291mm
293mm
295mm
295mm
295mm
297mm
Chainstay Length
430mm
430mm
430mm
430mm
430mm
430mm
Chainstay Length Horizontal
428mm
428.2mm
428.3mm
428.3mm
428.3mm
428.5mm
Front-Center
599.5mm
614.1mm
621.8mm
631.8mm
643.8mm
650.5mm
Front-Center Horizontal
598mm
612.9mm
620.7mm
630.7mm
642.7mm
649.5mm
Wheelbase
1026mm
1041mm
1049mm
1059mm
1071mm
1078mm
Fork Offset/Rake
43mm
43mm
43mm
43mm
43mm
43mm
Fork Length (Axle-To-Crown)
395mm
395mm
395mm
395mm
395mm
395mm
Trail
75.4mm
high
75.4mm
high
72.3mm
high
72.3mm
high
72.3mm
high
72.3mm
high
Mechanical Trail
70.8mm
70.8mm
68.1mm
68.1mm
68.1mm
68.1mm
Wheel Flop
24.2mm
24.2mm
22.7mm
22.7mm
22.7mm
22.7mm
Standover Height
694mm
719mm
738mm
767mm
804mm
841mm
Tire to Pedal Spindle
96.7mm
170 mm cranks
111.3mm
170 mm cranks
114mm
175 mm cranks
124mm
175 mm cranks
135.9mm
175 mm cranks
142.6mm
175 mm cranks
Pedal Spindle to Ground Clearance
121mm
170 mm cranks
123mm
170 mm cranks
120mm
175 mm cranks
120mm
175 mm cranks
120mm
175 mm cranks
122mm
175 mm cranks

Base Build

13in
16.5in
18in
19.5in
21in
22.5in
Wheel Size
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
Tire Width
2.1in
2.1in
2.1in
2.1in
2.1in
2.1in
Tire Width Max
2.35in
2.35in
2.35in
2.35in
2.35in
2.35in
Tire Outer Diameter
665.7mm
665.7mm
665.7mm
665.7mm
665.7mm
665.7mm
Bike Length with Tires
1691.7mm
1706.7mm
1714.7mm
1724.7mm
1736.7mm
1743.7mm
Crank Length
170mm
170mm
175mm
175mm
175mm
175mm
Handlebar Width
560mm
560mm
560mm
560mm
560mm
560mm
Stem Length
90mm
105mm
120mm
135mm
135mm
135mm

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
Rigid MTB
Source:http://www.vintage-trek.com/Trek-Fisher-Klein-Lemond/1997trek.pdf