2006 GT Bicycles i-Drive 5.4 Base

Design
Flat Bar, Full suspension
Frame
Aluminum
Fork
Aluminum
Suspension
130mm fork travel, 125mm rear travel, 20% sag
Features
Disc brake
Very aggressive stack and reachvs category
Very aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category

Geometry

S
M
L
Stack
578.4mm
588mm
606.9mm
Reach
385.9mm
409.6mm
419.8mm
Stack to Reach Ratio
1.5:1
1.44:1
1.45:1
Seat Tube Length, C-C
380mm
404.4mm
419mm
Top Tube Length, Effective/Horizontal HT Top
535.7mm
559.6mm
573.9mm
Top Tube Slope
18.2deg
15.9deg
15.9deg
Head Tube Angle
69.5deg
69.5deg
69.5deg
Seat Tube Angle
73deg
73deg
73deg
Head Tube Length
100mm
110mm
130mm
Bottom Bracket Drop
5.7mm
5.9mm
6.1mm
Bottom Bracket Height
334.7mm
334.5mm
334.4mm
Chainstay Length
432.3mm
430.8mm
429.8mm
Chainstay Length Horizontal
432.3mm
430.7mm
429.8mm
Front-Center
641.7mm
668.9mm
686.1mm
Front-Center Horizontal
641.7mm
668.8mm
686mm
Wheelbase
1073.9mm
1099.6mm
1115.8mm
Fork Offset/Rake
39mm
39mm
39mm
Fork Length (Axle-To-Crown)
507.5mm
507.5mm
507.5mm
Trail
85.7mm
very high
85.7mm
very high
85.7mm
very high
Mechanical Trail
80.2mm
80.2mm
80.2mm
Wheel Flop
28.1mm
28.1mm
28.1mm
Standover Height
760.8mm
781mm
796.4mm
Tire to Pedal Spindle
131.2mm
170 mm cranks
158.4mm
170 mm cranks
175.6mm
170 mm cranks
Pedal Spindle to Ground Clearance
164.7mm
170 mm cranks
164.5mm
170 mm cranks
164.4mm
170 mm cranks

Base Build

S
M
L
Wheel Size
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
Tire Width
2.4in
2.4in
2.4in
Tire Outer Diameter
680.9mm
680.9mm
680.9mm
Bike Length with Tires
1754.9mm
1780.5mm
1796.7mm
Handlebar Width
680mm
680mm
680mm
Stem Length
60mm
60mm
60mm
Stem Angle
0deg
0deg
0deg

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
Source:https://www.mtbr.com/threads/i-drive-5-2006-geometry.383021/