2020 Brother Cycles Big Bro Frameset 27.5+ xLarge (22)

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
630mm
Reach
452mm
Stack to Reach Ratio
1.39:1
Seat Tube Length, C-T
559mm
Top Tube Length, Effective/Horizontal HT Top
645mm
Top Tube Length, Actual C-C
622mm
Top Tube Slope
8.8deg
Head Tube Angle
70.5deg
Seat Tube Angle
73deg
Head Tube Length
125mm
Bottom Bracket Drop
60mm
Bottom Bracket Height
308.2mm
Chainstay Length
445mm
Chainstay Length Horizontal
440.9mm
Front-Center
705.6mm
Front-Center Horizontal
703.1mm
Wheelbase
1144mm
Fork Offset/Rake
46mm
Fork Length (Axle-To-Crown)
483mm
Trail
81.6mm
very high
Mechanical Trail
76.9mm
Wheel Flop
25.7mm
Standover Height
871mm
Tire to Pedal Spindle Distance
With 170 mm cranks
167.4mm
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
1880.4mm
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/