	XXS	XS	S	M	L	XL	XXL
Stack	504mm	522mm	537mm	558mm	576mm	600mm	631mm
Reach	355mm	365mm	370mm	380mm	390mm	395mm	405mm
Stack to Reach Ratio	1.42:1	1.43:1	1.45:1	1.47:1	1.48:1	1.52:1	1.56:1
Seat Tube Length, C-T	425mm	445mm	465mm	490mm	515mm	540mm	570mm
Top Tube Length, Effective/Horizontal Unknown	485mm	506mm	524mm	540mm	561mm	578mm	604mm
Top Tube Slope	11.3deg	10.9deg	10.2deg	9.5deg	8.7deg	8.5deg	8.5deg
Head Tube Angle	70.5deg	71.5deg	72.5deg	73deg	73.5deg	73.5deg	74deg
Seat Tube Angle	75.5deg	75deg	75deg	74.5deg	74deg	74deg	73.5deg
Head Tube Length	90mm	105mm	120mm	140mm	160mm	185mm	215mm
Bottom Bracket Drop	75mm	75mm	72.5mm	72.5mm	70mm	70mm	70mm
Bottom Bracket Height	264mm	264mm	266.5mm	266.5mm	269mm	269mm	269mm
Chainstay Length	408mm	408mm	408mm	408mm	408mm	408mm	408mm
Chainstay Length Horizontal	401.1mm	401.1mm	401.5mm	401.5mm	402mm	402mm	402mm
Front-Center	564mm	571.9mm	573.1mm	579.1mm	590.2mm	602.1mm	615.1mm
Front-Center Horizontal	559mm	567mm	568.5mm	574.5mm	586.1mm	598.1mm	611.1mm
Wheelbase	960mm	968mm	970mm	976mm	988mm	1000mm	1013mm
Fork Offset/Rake	50mm	50mm	50mm	44mm	44mm	44mm	44mm
Fork Length, Unknown	380mm	380mm	380mm	380mm	380mm	380mm	380mm
Trail	67mm high	60.7mm mid/neutral	54.5mm mid/neutral	57.6mm mid/neutral	54.5mm mid/neutral	54.5mm mid/neutral	51.4mm mid/neutral
Mechanical Trail	63.2mm	57.6mm	51.9mm	55.1mm	52.3mm	52.3mm	49.4mm
Wheel Flop	21.1mm	18.3mm	15.6mm	16.1mm	14.9mm	14.9mm	13.6mm
Standover Height	723mm	735mm	755mm	778mm	802mm	826mm	855mm
Tire to Pedal Spindle	60mm 165 mm cranks	67.9mm 165 mm cranks	66.6mm 167.5 mm cranks	72.6mm 167.5 mm cranks	81.2mm 170 mm cranks	93.1mm 170 mm cranks	106.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	99mm 165 mm cranks	99mm 165 mm cranks	99mm 167.5 mm cranks	99mm 167.5 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks	99mm 170 mm cranks

	XXS	XS	S	M	L	XL	XXL
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	28mm	28mm	28mm	28mm	28mm	28mm	28mm
Tire Outer Diameter	678mm	678mm	678mm	678mm	678mm	678mm	678mm
Bike Length with Tires	1638mm	1646mm	1648mm	1654mm	1666mm	1678mm	1691mm
Crank Length	165mm	165mm	167.5mm	167.5mm	170mm	170mm	170mm
Stem Length	90mm	90mm	100mm	100mm	100mm	110mm	110mm

Published Sizing Recommendations

Height

11 ft 10 in

12 ft 11 in

13 ft 7 in

14 ft 2 in

14 ft 7 in

15 ft 0 in

15 ft 8 in

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.

Learn more about the Upright/Aggressive Scale

Category Trend

Endurance Road

Source:https://feltbicycles.com/products/nexar-frd-framekit?variant=57412700111173

Suggest Bike Edit

2026 Felt Bicycles NEXAR Base

Geometry

Base Build

Published Sizing Recommendations

Stack and Reach vs. Category Trend