2025 Pivot Cycles Mach 4 SL 100mm Fork - 29"

	XS	SM	MD	LG	XL
Stack	577mm	580mm	594mm	608mm	622mm
Reach	410mm	425mm	450mm	475mm	495mm
Stack to Reach Ratio	1.41:1	1.36:1	1.32:1	1.28:1	1.26:1
Seat Tube Length, C-T	355mm	394mm	419mm	460mm	505mm
Top Tube Length, Effective/Horizontal Center	565mm	580mm	609mm	638mm	662mm
Top Tube Slope	25.1deg	20.8deg	18.8deg	15.4deg	12.1deg
Head Tube Angle	68deg	68deg	68deg	68deg	68deg
Seat Tube Angle	76deg	76deg	76deg	76deg	76deg
Head Tube Length	85mm	90mm	105mm	120mm	135mm
Bottom Bracket Drop	47mm	45mm	45mm	45mm	45mm
Bottom Bracket Height	319.9mm	321.9mm	321.9mm	321.9mm	321.9mm
Chainstay Length	432mm	432mm	432mm	432mm	432mm
Chainstay Length Horizontal	429.4mm	429.7mm	429.7mm	429.7mm	429.7mm
Front-Center	673.2mm	689.8mm	720.8mm	750.7mm	776.7mm
Front-Center Horizontal	671.6mm	688.4mm	719.4mm	749.4mm	775.4mm
Wheelbase	1101mm	1118mm	1149mm	1179mm	1205mm
Fork Offset/Rake	44mm	43.8mm	44.1mm	43.5mm	43.8mm
Trail	100.8mm very high	101mm very high	100.7mm very high	101.4mm very high	101mm very high
Mechanical Trail	93.5mm	93.7mm	93.4mm	94mm	93.7mm
Wheel Flop	35mm	35.1mm	35mm	35.2mm	35.1mm
Standover Height	637mm	644mm	672mm	668mm	698mm
Tire to Pedal Spindle	136.3mm 170 mm cranks	152.9mm 170 mm cranks	183.9mm 170 mm cranks	213.8mm 170 mm cranks	239.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	149.9mm 170 mm cranks	151.9mm 170 mm cranks	151.9mm 170 mm cranks	151.9mm 170 mm cranks	151.9mm 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://global.pivotcycles.com/bikes/mach-4-sl

Geometry