2019 GT Bicycles Aggressor Expert 27.5"

Design
Flat Bar, Hardtail (Front suspension)
Frame
Aluminum
Fork
Aluminum
Suspension
80mm fork travel
Features
Disc brake
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat aggressive stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Geometry

Medium
Large
Stack
589mm
608mm
Reach
431mm
455mm
Stack to Reach Ratio
1.37:1
1.34:1
Seat Tube Length, C-T
430mm
485mm
Top Tube Length, Effective/Horizontal HT Top
615mm
644mm
Top Tube Slope
17.7deg
13.6deg
Head Tube Angle
69.5deg
69.5deg
Seat Tube Angle
72.7deg
72.7deg
Head Tube Length
110mm
130mm
Bottom Bracket Drop
45mm
45mm
Bottom Bracket Height
300.3mm
300.3mm
Chainstay Length
435mm
435mm
Chainstay Length Horizontal
432.7mm
432.7mm
Front-Center
681mm
711mm
Front-Center Horizontal
679.3mm
710.3mm
Wheelbase
1112mm
1143mm
Fork Offset/Rake
42mm
42mm
Trail
84.3mm
very high
84.3mm
very high
Mechanical Trail
78.9mm
78.9mm
Wheel Flop
27.7mm
27.7mm
Standover Height
762mm
804mm
Tire to Pedal Spindle
165.7mm
170 mm cranks
195.7mm
170 mm cranks
Pedal Spindle to Ground Clearance
130.3mm
170 mm cranks
130.3mm
170 mm cranks

Expert 27.5" Build

Medium
Large
Wheel Size
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
Tire Width
2.1in
2.1in
Tire Outer Diameter
690.7mm
690.7mm
Bike Length with Tires
1802.7mm
1833.7mm

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://99spokes.com/bikes/gt/2019/aggressor-expert