2018 Genesis Bikes Tarn Base S

Build

650B/27.5 in × 2.8 in

Insights

Somewhat upright stack and reach vs trend of hardtail trail mtb bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
633mm
Reach
415mm
Stack to Reach Ratio
1.53:1
Seat Tube Length, C-T
370mm
Top Tube Length, Effective/Horizontal Unknown
597mm
Top Tube Slope
28.2deg
Head Tube Angle
68deg
Seat Tube Angle
74deg
Head Tube Length
100mm
Bottom Bracket Drop
55mm
Bottom Bracket Height
308.1mm
Chainstay Length
432mm
Chainstay Length Horizontal
428.5mm
Front-Center
705.7mm
Front-Center Horizontal
703.5mm
Wheelbase
1132mm
Fork Offset/Rake
51mm
Trail
91.7mm
very high
Mechanical Trail
85mm
Wheel Flop
31.9mm
Standover Height
759mm
Tire to Pedal Spindle Distance
With 170 mm cranks
172.5mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
138.1mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
2.8in
Tire Outer Diameter
726.2mm
Bike Length with Tires
1858.2mm
Handlebar Width
760mm
Stem Length
55mm
Suspension Type
Hardtail (Front suspension)
Bar Type
Flat Bar
Fork Travel
120mm
Suspension Sag
20%
Frame Material
Steel
Fork Material
N/A
Brake Type
Disc
Source:https://99spokes.com/en-GB/bikes/genesis/2018/tarn-20 , https://geometrygeeks.bike/bike/genesis-tarn-20-2020/