2026 Pilot Cycles Scram Pinion

	P1	P2	P3	P4	P5
Stack	550mm	574mm	599mm	626mm	650mm
Reach	364mm	382mm	389mm	401mm	409mm
Stack to Reach Ratio	1.51:1	1.5:1	1.54:1	1.56:1	1.59:1
Seat Tube Length, Unknown	460mm	490mm	520mm	550mm	580mm
Top Tube Length, Effective/Horizontal Unknown	529mm	553mm	569mm	588mm	603mm
Top Tube Slope	12.4deg	11.3deg	10.6deg	10deg	9.3deg
Head Tube Angle	70deg	71deg	71deg	71deg	71deg
Seat Tube Angle	73.5deg	73.5deg	73.5deg	73.5deg	73.5deg
Head Tube Length	113mm	135mm	162mm	190mm	215mm
Bottom Bracket Drop	72mm	72mm	72mm	72mm	72mm
Bottom Bracket Height	283mm	283mm	283mm	283mm	283mm
Chainstay Length	444mm	444mm	444mm	444mm	444mm
Chainstay Length Horizontal	438.1mm	438.1mm	438.1mm	438.1mm	438.1mm
Front-Center	590.3mm	606.2mm	623.1mm	643.9mm	659.8mm
Front-Center Horizontal	585.9mm	601.9mm	618.9mm	639.9mm	655.9mm
Wheelbase	1024mm	1040mm	1057mm	1078mm	1094mm
Fork Offset/Rake	45mm	44.5mm	45.8mm	45.5mm	45.3mm
Trail	81.3mm very high	75.2mm high	73.8mm high	74.1mm high	74.4mm high
Mechanical Trail	76.4mm	71.1mm	69.8mm	70.1mm	70.3mm
Wheel Flop	26.1mm	23.2mm	22.7mm	22.8mm	22.9mm
Tire to Pedal Spindle	65.3mm 170 mm cranks	81.2mm 170 mm cranks	98.1mm 170 mm cranks	118.9mm 170 mm cranks	134.8mm 170 mm cranks
Pedal Spindle to Ground Clearance	113mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks	113mm 170 mm cranks	113mm 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://www.pilotcycles.com/gravel/

Geometry