2021 RSD Bikes Sergeant V4 Rigid Alloy Fork 27.5+

	Small	Medium	Large	XL	XXL
Stack	615mm	625mm	634mm	652mm	670mm
Reach	408mm	445mm	463mm	478mm	493mm
Stack to Reach Ratio	1.51:1	1.4:1	1.37:1	1.36:1	1.36:1
Seat Tube Length, C-T	390mm	410mm	440mm	470mm	490mm
Top Tube Length, Effective/Horizontal Center	585mm	625mm	645mm	665mm	685mm
Top Tube Length, Actual C-C	569mm	605mm	621mm	640mm	658mm
Top Tube Slope	24.8deg	22.8deg	19.2deg	18.8deg	16deg
Head Tube Angle	65.5deg	65.5deg	65.5deg	65.5deg	65.5deg
Seat Tube Angle	74deg	74deg	74deg	74deg	74deg
Head Tube Length	90mm	100mm	110mm	130mm	150mm
Bottom Bracket Drop	53.1mm	53.1mm	53.1mm	53.1mm	53.1mm
Bottom Bracket Height	310mm	310mm	310mm	310mm	310mm
Chainstay Length	440mm	440mm	440mm	440mm	440mm
Chainstay Length Max	455mm	455mm	455mm	455mm	455mm
Chainstay Length Horizontal	436.8mm	436.8mm	436.8mm	436.8mm	436.8mm
Chainstay Length Horizontal Max	451.9mm	451.9mm	451.9mm	451.9mm	451.9mm
Front-Center	742.1mm	784mm	805mm	828.9mm	850.9mm
Front-Center Horizontal	740.2mm	782.2mm	803.2mm	827.2mm	849.2mm
Wheelbase	1177mm	1219mm	1240mm	1264mm	1286mm
Wheelbase Max	1192.1mm	1234.1mm	1255.1mm	1279.1mm	1301.1mm
Fork Offset/Rake	51mm	51mm	51mm	51mm	51mm
Fork Length (Axle-To-Crown)	510mm	510mm	510mm	510mm	510mm
Trail	109.4mm very high	109.4mm very high	109.4mm very high	109.4mm very high	109.4mm very high
Mechanical Trail	99.6mm	99.6mm	99.6mm	99.6mm	99.6mm
Wheel Flop	41.3mm	41.3mm	41.3mm	41.3mm	41.3mm
Standover Height	687mm	705mm	710mm	714mm	725mm
Tire to Pedal Spindle	209mm 170 mm cranks	250.9mm 170 mm cranks	271.9mm 170 mm cranks	295.8mm 170 mm cranks	317.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	140mm 170 mm cranks	140mm 170 mm cranks	140mm 170 mm cranks	140mm 170 mm cranks	140mm 170 mm cranks

	Small	Medium	Large	XL	XXL
Wheel Size	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD	650B/27.5 in 584 mm BSD
Tire Width	2.8in	2.8in	2.8in	2.8in	2.8in
Tire Outer Diameter	726.2mm	726.2mm	726.2mm	726.2mm	726.2mm
Bike Length with Tires	1903.2mm	1945.2mm	1966.2mm	1990.2mm	2012.2mm

Published Sizing Recommendations

Height

5 ft 2 in

5 ft 7 in

5 ft 11 in

5 ft 10 in

6 ft 2 in

6 ft 1 in

6 ft 4 in

6 ft 3 in

6 ft 6 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

Rigid MTB

Source:https://rsdbikes.com/sergeant-v4-aluminum/

Suggest Bike Edit

2021 RSD Bikes Sergeant V4 Rigid Alloy Fork 27.5+

Geometry

Rigid Alloy Fork 27.5+ Build

Published Sizing Recommendations

Stack and Reach vs. Category Trend