2021 Format 1311+ 27.5 Base M

Build

650B/27.5 in × 2.6 in

Insights

Somewhat upright stack and reach vs trend of hardtail trail mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
643mm
Reach
420mm
Stack to Reach Ratio
1.53:1
Seat Tube Length, C-T
430mm
Top Tube Length, Effective/Horizontal HT Top
604mm
Top Tube Slope
23.1deg
Head Tube Angle
66deg
Seat Tube Angle
74deg
Head Tube Length
120mm
Bottom Bracket Drop
50mm
Bottom Bracket Height
308mm
Chainstay Length
428mm
Chainstay Length Horizontal
425.1mm
Front-Center
741.6mm
Front-Center Horizontal
739.9mm
Wheelbase
1165mm
Fork Offset/Rake
51mm
Fork Length (Axle-To-Crown)
552mm
Trail
103.6mm
very high
Mechanical Trail
94.6mm
Wheel Flop
38.5mm
Tire to Pedal Spindle Distance
With 170 mm cranks
213.6mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
138mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
2.6in
Tire Outer Diameter
716.1mm
Bike Length with Tires
1881.1mm
Suspension Type
Hardtail (Front suspension)
Bar Type
Flat Bar
Fork Travel
150mm
Suspension Sag
Unknown
Frame Material
Aluminum
Fork Material
Aluminum
Brake Type
Disc

Published Sizing Recommendations

Height
165 cm
to
180 cm
Source:https://format.bike/upload/iblock/1df/1df72c4438980c399837998ac2b4276f.pdf