2021 (June rev) MASH Steel Frameset

Somewhat upright stack and reachvs category

Average stack and reachvs category

Somewhat aggressive stack and reachvs category

Very aggressive stack and reachvs category

	50 Small	53 Medium	55 Large	57 X-Large	60 XX-Large	62 XXX-Large
Stack	502mm	514mm	525mm	549mm	572mm	580mm
Reach	380mm	392mm	404mm	423mm	436mm	448mm
Stack to Reach Ratio	1.32:1	1.31:1	1.3:1	1.3:1	1.31:1	1.29:1
Seat Tube Length, C-T	520mm	540mm	560mm	580mm	600mm	620mm
Seat Tube Length, C-C	485mm	500mm	520mm	540mm	560mm	600mm
Top Tube Length, Effective/Horizontal Center	510mm	530mm	550mm	570mm	600mm	620mm
Top Tube Length, Actual C-C	510mm	530mm	550mm	570mm	600mm	620mm
Top Tube Slope	0deg	0deg	0deg	0deg	0deg	0deg
Head Tube Angle	72.5deg	73.5deg	74deg	74.5deg	75deg	75.5deg
Seat Tube Angle	75.5deg	75deg	74.5deg	74deg	74deg	73.5deg
Head Tube Length	100mm	110mm	120mm	143mm	165mm	172mm
Bottom Bracket Drop	54mm	54mm	54mm	54mm	54mm	54mm
Bottom Bracket Height	297mm	297mm	297mm	297mm	297mm	297mm
Chainstay Length	390mm	390mm	390mm	390mm	390mm	390mm
Chainstay Length Horizontal	386.2mm	386.2mm	386.2mm	386.2mm	386.2mm	386.2mm
Front-Center	555.3mm	562.2mm	572.8mm	593.9mm	608.3mm	617.4mm
Front-Center Horizontal	552.7mm	559.6mm	570.3mm	591.4mm	605.9mm	615mm
Wheelbase	939mm	945.8mm	956.5mm	977.7mm	992.1mm	1001.3mm
Fork Offset/Rake	30mm	30mm	30mm	30mm	30mm	30mm
Fork Length (On-Axis)	380mm	380mm	380mm	380mm	380mm	380mm
Trail	79.2mm high	72.7mm high	69.4mm high	66.2mm high	63mm mid/neutral	59.8mm mid/neutral
Mechanical Trail	75.6mm	69.7mm	66.8mm	63.8mm	60.9mm	57.9mm
Wheel Flop	22.7mm	19.8mm	18.4mm	17.1mm	15.8mm	14.5mm
Standover Height	802mm	814mm	825mm	849mm	872mm	880mm
Tire to Pedal Spindle	34.3mm 170 mm cranks	41.2mm 170 mm cranks	51.8mm 170 mm cranks	72.9mm 170 mm cranks	87.3mm 170 mm cranks	96.4mm 170 mm cranks
Pedal Spindle to Ground Clearance	127mm 170 mm cranks	127mm 170 mm cranks	127mm 170 mm cranks	127mm 170 mm cranks	127mm 170 mm cranks	127mm 170 mm cranks

	50 Small	53 Medium	55 Large	57 X-Large	60 XX-Large	62 XXX-Large
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
Tire Width	40mm	40mm	40mm	40mm	40mm	40mm
Tire Width Max	40mm	40mm	40mm	40mm	40mm	40mm
Tire Outer Diameter	702mm	702mm	702mm	702mm	702mm	702mm
Bike Length with Tires	1641mm	1647.8mm	1658.5mm	1679.7mm	1694.1mm	1703.3mm

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

Track/Fixed-gear

Source:https://www.mashsf.com/wp-content/uploads/2021/06/Mash_Steel_GEO_CHART.jpg

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2021 (June rev) MASH Steel Frameset

Geometry

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Stack and Reach vs. Category Trend