1989 Bianchi Super Grizzly Base

Category
Rigid MTB
Design
Flat Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Steel
Features
Rim brake
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category

Geometry

17.5”
19.5”
21”
22.5”
Stack
425.4mm
474mm
510.4mm
546.8mm
Reach
418.7mm
423.8mm
427.7mm
431.5mm
Stack to Reach Ratio
1.02:1
1.12:1
1.19:1
1.27:1
Seat Tube Length, C-T
444.5mm
495.3mm
533.4mm
571.5mm
Top Tube Length, Effective/Horizontal Center
550mm
570mm
585mm
600mm
Top Tube Length, Actual C-C
550mm
570mm
585mm
600mm
Top Tube Slope
0deg
0deg
0deg
0deg
Head Tube Angle
71deg
71deg
71deg
71deg
Seat Tube Angle
73deg
73deg
73deg
73deg
Bottom Bracket Drop
10mm
36mm
45mm
45mm
Bottom Bracket Height
320.3mm
294.3mm
285.3mm
285.3mm
Chainstay Length
430mm
430mm
430mm
430mm
Chainstay Length Horizontal
429.9mm
428.5mm
427.6mm
427.6mm
Front-Center
631.2mm
637.5mm
650.9mm
667.9mm
Front-Center Horizontal
631.1mm
636.5mm
649.4mm
666.4mm
Wheelbase
1061mm
1065mm
1077mm
1094mm
Fork Offset/Rake
50mm
50mm
50mm
50mm
Trail
60.9mm
mid/​neutral
60.9mm
mid/​neutral
60.9mm
mid/​neutral
60.9mm
mid/​neutral
Mechanical Trail
57.5mm
57.5mm
57.5mm
57.5mm
Wheel Flop
18.7mm
18.7mm
18.7mm
18.7mm
Tire to Pedal Spindle
130.9mm
170 mm cranks
137.2mm
170 mm cranks
150.6mm
170 mm cranks
167.6mm
170 mm cranks
Pedal Spindle to Ground Clearance
150.3mm
170 mm cranks
124.3mm
170 mm cranks
115.3mm
170 mm cranks
115.3mm
170 mm cranks

Base Build

17.5”
19.5”
21”
22.5”
Wheel Size
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
Tire Width
2in
2in
2in
2in
Tire Outer Diameter
660.6mm
660.6mm
660.6mm
660.6mm
Bike Length with Tires
1721.6mm
1725.6mm
1737.6mm
1754.6mm

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:1989 Bianchi Catalog