2020 Brother Cycles Big Bro Frameset 27.5+ Medium (18)

Build

650B/27.5 in × 3 in

Insights

Average stack and reach vs trend of rigid mtb bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
605mm
Reach
410mm
Stack to Reach Ratio
1.48:1
Seat Tube Length, C-T
457mm
Top Tube Length, Effective/Horizontal HT Top
595mm
Top Tube Length, Actual C-C
571mm
Top Tube Slope
17.2deg
Head Tube Angle
70deg
Seat Tube Angle
73deg
Head Tube Length
100mm
Bottom Bracket Drop
60mm
Bottom Bracket Height
308.2mm
Chainstay Length
445mm
Chainstay Length Horizontal
440.9mm
Front-Center
659.8mm
Front-Center Horizontal
657.1mm
Wheelbase
1098mm
Fork Offset/Rake
46mm
Fork Length (Axle-To-Crown)
483mm
Trail
85.1mm
very high
Mechanical Trail
79.9mm
Wheel Flop
27.3mm
Standover Height
810mm
Tire to Pedal Spindle Distance
With 170 mm cranks
121.6mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
138.2mm

Frameset 27.5+ Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
3in
Tire Outer Diameter
736.4mm
Bike Length with Tires
1834.4mm
Suspension Type
Rigid, suspension corrected
Bar Type
Flat Bar
Frame Material
Steel
Fork Material
Steel
Brake Type
Disc
Features
Single-speed capable
Source:https://www.brothercycles.com/shop/frames/big-bro/