2016 Genesis Bikes Tarn Base

	S	M	L	XL
Stack	633mm	638mm	638mm	643mm
Reach	415mm	440mm	465mm	490mm
Stack to Reach Ratio	1.53:1	1.45:1	1.37:1	1.31:1
Seat Tube Length, C-T	405mm	445mm	483mm	525mm
Top Tube Length, Effective/Horizontal Unknown	621mm	647mm	672mm	699mm
Top Tube Slope	24.7deg	20.4deg	16.2deg	12.4deg
Head Tube Angle	68deg	68deg	68deg	68deg
Seat Tube Angle	72deg	72deg	72deg	72deg
Head Tube Length	100mm	105mm	105mm	110mm
Bottom Bracket Drop	55mm	55mm	55mm	55mm
Bottom Bracket Height	308.1mm	308.1mm	308.1mm	308.1mm
Chainstay Length	445mm	445mm	445mm	445mm
Chainstay Length Horizontal	441.6mm	441.6mm	441.6mm	441.6mm
Front-Center	705.7mm	732.6mm	757.6mm	784.5mm
Front-Center Horizontal	703.5mm	730.6mm	755.6mm	782.6mm
Wheelbase	1145.1mm	1172.1mm	1197.1mm	1224.2mm
Fork Offset/Rake	51mm	51mm	51mm	51mm
Trail	91.7mm very high	91.7mm very high	91.7mm very high	91.7mm very high
Mechanical Trail	85mm	85mm	85mm	85mm
Wheel Flop	31.9mm	31.9mm	31.9mm	31.9mm
Tire to Pedal Spindle	172.6mm 170 mm cranks	199.5mm 170 mm cranks	224.4mm 170 mm cranks	251.4mm 170 mm cranks
Pedal Spindle to Ground Clearance	138.1mm 170 mm cranks	138.1mm 170 mm cranks	138.1mm 170 mm cranks	138.1mm 170 mm cranks

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.

Category Trend

Source:https://www.allterraincycles.co.uk/genesis-tarn-20-hardtail-mtb-bike-2016

Geometry