2026 DIY Carbon Bikes GRB700 Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Carbon/Composite
Fork
Carbon/Composite
Features
Disc brake
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category

Geometry

49
52
54
56
58
Stack
519mm
544.4mm
565.3mm
589.9mm
609.7mm
Reach
374.1mm
378.4mm
387.1mm
398.2mm
406.1mm
Stack to Reach Ratio
1.39:1
1.44:1
1.46:1
1.48:1
1.5:1
Seat Tube Length, C-T
477mm
507mm
528mm
546mm
566mm
Top Tube Length, Effective/Horizontal Center
518mm
534.5mm
554.5mm
578.5mm
592.5mm
Top Tube Slope
6.8deg
6.3deg
6.3deg
6.9deg
6.8deg
Head Tube Angle
70deg
70deg
71deg
71deg
71deg
Seat Tube Angle
74.5deg
74deg
73.5deg
73deg
73deg
Head Tube Length
95mm
122mm
140mm
166mm
187mm
Bottom Bracket Drop
71mm
71mm
71mm
71mm
71mm
Bottom Bracket Height
270mm
270mm
270mm
270mm
270mm
Chainstay Length
435mm
435mm
435mm
435mm
435mm
Chainstay Length Horizontal
429.2mm
429.2mm
429.2mm
429.2mm
429.2mm
Front-Center
594.6mm
608.1mm
614.4mm
633.7mm
648.4mm
Front-Center Horizontal
590.3mm
603.9mm
610.1mm
629.7mm
644.4mm
Wheelbase
1019.5mm
1033.1mm
1039.3mm
1058.9mm
1073.6mm
Fork Offset/Rake
50mm
50mm
50mm
50mm
50mm
Fork Length, Unknown
40mm
40mm
40mm
40mm
400mm
Trail
70.9mm
high
70.9mm
high
64.5mm
mid/​neutral
64.5mm
mid/​neutral
64.5mm
mid/​neutral
Mechanical Trail
66.6mm
66.6mm
61mm
61mm
61mm
Wheel Flop
22.8mm
22.8mm
19.9mm
19.9mm
19.9mm
Tire to Pedal Spindle
83.6mm
170 mm cranks
97.1mm
170 mm cranks
103.4mm
170 mm cranks
122.7mm
170 mm cranks
137.4mm
170 mm cranks
Pedal Spindle to Ground Clearance
100mm
170 mm cranks
100mm
170 mm cranks
100mm
170 mm cranks
100mm
170 mm cranks
100mm
170 mm cranks

Base Build

49
52
54
56
58
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
30mm
30mm
30mm
30mm
30mm
Tire Outer Diameter
682mm
682mm
682mm
682mm
682mm
Bike Length with Tires
1701.5mm
1715.1mm
1721.3mm
1740.9mm
1755.6mm

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
All-road/Gravel