2020 BTR Fabrications Roamer Base

Design
Flat Bar, Hardtail (Front suspension)
Frame
Steel
Suspension
100mm fork travel
Features
Disc brake
Somewhat upright stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat upright stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat upright stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Geometry

Small
Medium
Large
Extra Large
XX Large
Stack
638.7mm
645.1mm
645.1mm
647.4mm
656.5mm
Reach
420mm
440mm
460mm
480mm
500mm
Stack to Reach Ratio
1.52:1
1.47:1
1.4:1
1.35:1
1.31:1
Seat Tube Length, C-T
400mm
420mm
440mm
455mm
455mm
Top Tube Length, Effective/Horizontal HT Top
591.2mm
612.9mm
638.9mm
665.6mm
688.2mm
Head Tube Angle
66deg
65.5deg
65.5deg
65deg
65deg
Effective Seat Tube Angle, ETT HT Top
75deg
75deg
74.5deg
74deg
74deg
Seat Tube Exit Angle
73.7deg
73.71deg
73.22deg
72.72deg
72.74deg
Head Tube Length
120mm
130mm
130mm
140mm
150mm
Bottom Bracket Drop
70.3mm
70.3mm
70.3mm
66.3mm
66.3mm
Bottom Bracket Height
326.1mm
326.1mm
326.1mm
330.1mm
330.1mm
Chainstay Length
435mm
435mm
435mm
435mm
435mm
Chainstay Length Horizontal
429.3mm
429.3mm
429.3mm
429.9mm
429.9mm
Front-Center
738mm
767mm
786.9mm
815mm
839.2mm
Front-Center Horizontal
734.7mm
763.7mm
783.7mm
812.3mm
836.6mm
Wheelbase
1163.9mm
1193mm
1213mm
1242.3mm
1266.5mm
Fork Offset/Rake
51mm
51mm
51mm
51mm
55.6mm
Fork Length (Axle-To-Crown)
511mm
511mm
511mm
511mm
511mm
Trail
120.6mm
very high
124.6mm
very high
124.6mm
very high
128.5mm
very high
123.5mm
very high
Mechanical Trail
110.2mm
113.4mm
113.4mm
116.5mm
111.9mm
Wheel Flop
44.8mm
47mm
47mm
49.2mm
47.3mm
Tire to Pedal Spindle
171.7mm
170 mm cranks
200.6mm
170 mm cranks
220.5mm
170 mm cranks
248.7mm
170 mm cranks
272.8mm
170 mm cranks
Pedal Spindle to Ground Clearance
156.1mm
170 mm cranks
156.1mm
170 mm cranks
156.1mm
170 mm cranks
160.1mm
170 mm cranks
160.1mm
170 mm cranks

Base Build

Small
Medium
Large
Extra Large
XX Large
Wheel Size
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
26 in
559 mm BSD
Tire Width
4.6in
4.6in
4.6in
4.6in
4.6in
Tire Width Max
4.8in
4.8in
4.8in
4.8in
4.8in
Tire Outer Diameter
792.7mm
792.7mm
792.7mm
792.7mm
792.7mm
Bike Length with Tires
1956.6mm
1985.7mm
2005.7mm
2034.9mm
2059.2mm

Published Sizing Recommendations

Height
164 cm
to
174 cm
170 cm
to
180 cm
176 cm
to
186 cm
182 cm
to
192 cm
188 cm
to
198 cm

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 Fatbike
Source:https://www.btr-fabrications.com/products/roamer-frame/#frame-options