2015 Bombtrack Bicycle Company Needle Base

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Steel
Features
Rim brake, Single-speed capable
Average stack and reachvs category
Average stack and reachvs category
Somewhat aggressive stack and reachvs category

Geometry

Small
Medium
Large
Stack
508mm
525mm
553mm
Reach
380mm
400mm
420mm
Stack to Reach Ratio
1.34:1
1.31:1
1.32:1
Seat Tube Length, C-T
530mm
550mm
580mm
Top Tube Length, Effective/Horizontal Center
512mm
541mm
574mm
Top Tube Slope
-0.6deg
-0.7deg
-0.6deg
Head Tube Angle
74deg
74.2deg
74.5deg
Seat Tube Angle
75.5deg
75deg
74.5deg
Head Tube Length
103mm
120mm
148mm
Bottom Bracket Drop
54mm
54mm
54mm
Bottom Bracket Height
280mm
280mm
280mm
Chainstay Length
397mm
397mm
397mm
Chainstay Length Horizontal
393.3mm
393.3mm
393.3mm
Front-Center
549.4mm
572.2mm
597.1mm
Front-Center Horizontal
546.7mm
569.7mm
594.7mm
Wheelbase
940mm
963mm
988mm
Fork Offset/Rake
35mm
35mm
35mm
Trail
59.4mm
mid/​neutral
58.1mm
mid/​neutral
56.3mm
mid/​neutral
Mechanical Trail
57.1mm
55.9mm
54.3mm
Wheel Flop
15.7mm
15.2mm
14.5mm
Standover Height
781mm
800mm
828mm
Tire to Pedal Spindle
50.4mm
165 mm cranks
68.2mm
170 mm cranks
93.1mm
170 mm cranks
Pedal Spindle to Ground Clearance
115mm
165 mm cranks
110mm
170 mm cranks
110mm
170 mm cranks

Base Build

Small
Medium
Large
Wheel Size
700C/29"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
Tire Width
23mm
23mm
23mm
Tire Outer Diameter
668mm
668mm
668mm
Bike Length with Tires
1608mm
1631mm
1656mm
Crank Length
165mm
Stem Length
110mm
Stem Angle
-17deg

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
Track/Fixed-gear
Source:http://bombtrack.com/wp-content/uploads/2015/02/bt_completebike_geometrie_table_2015.pdf