2018 Felt Bicycles FR FR4

	51cm	56cm	54cm	58cm	61cm
Stack	530mm	572mm	572mm	594mm	621mm
Reach	377mm	394mm	394mm	405mm	414mm
Stack to Reach Ratio	1.41:1	1.45:1	1.45:1	1.47:1	1.5:1
Seat Tube Length, C-T	465mm	525mm	505mm	555mm	595mm
Top Tube Length, Effective/Horizontal Center	530mm	563mm	548mm	583mm	604mm
Top Tube Slope	9.3deg	7.2deg	9.3deg	6.3deg	5.1deg
Head Tube Angle	72.2deg	73.5deg	73deg	73.8deg	74deg
Seat Tube Angle	74deg	73.5deg	73.5deg	73.2deg	73deg
Head Tube Length	115mm	155mm	135mm	177mm	205mm
Bottom Bracket Drop	72mm	70mm	70mm	70mm	70mm
Bottom Bracket Height	264mm	266mm	266mm	266mm	266mm
Chainstay Length	403mm	405mm	405mm	407mm	410mm
Chainstay Length Horizontal	396.5mm	398.9mm	398.9mm	400.9mm	404mm
Front-Center	577mm	591mm	591mm	606mm	621mm
Front-Center Horizontal	572.5mm	587.1mm	587.1mm	602.1mm	617mm
Wheelbase	969mm	986mm	986mm	1003mm	1021mm
Fork Offset/Rake	47mm	43mm	43mm	43mm	43mm
Fork Length (On-Axis)	380mm	380mm	380mm	380mm	380mm
Trail	58.5mm mid/neutral	54.7mm mid/neutral	57.8mm mid/neutral	52.8mm mid/neutral	51.6mm mid/neutral
Mechanical Trail	55.7mm	52.4mm	55.2mm	50.7mm	49.6mm
Wheel Flop	17mm	14.9mm	16.2mm	14.2mm	13.7mm
Standover Height	710mm	767mm	767mm	790mm	828mm
Tire to Pedal Spindle	71mm 170 mm cranks	85mm 170 mm cranks	85mm 170 mm cranks	100mm 170 mm cranks	115mm 170 mm cranks
Pedal Spindle to Ground Clearance	94mm 170 mm cranks	96mm 170 mm cranks	96mm 170 mm cranks	96mm 170 mm cranks	96mm 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:Felt

Geometry