2025 BTR Fabrications Blinder 26"

	S	M	L	XL
Stack	588.6mm	588.6mm	588.6mm	607.3mm
Reach	390mm	410mm	430mm	450mm
Stack to Reach Ratio	1.51:1	1.44:1	1.37:1	1.35:1
Seat Tube Length, Unknown	289.9mm	284.6mm	279.6mm	285mm
Top Tube Length, Effective/Horizontal Unknown	547.7mm	567.7mm	587.7mm	612.7mm
Top Tube Slope	33.6deg	33deg	32.4deg	32.4deg
Head Tube Angle	69.5deg	69.5deg	69.5deg	69.5deg
Seat Tube Angle	75deg	75deg	75deg	75deg
Head Tube Length	130mm	130mm	130mm	150mm
Bottom Bracket Drop	20mm	20mm	20mm	20mm
Bottom Bracket Height	312.8mm	312.8mm	312.8mm	312.8mm
Chainstay Length Horizontal	385mm	385mm	385mm	385mm
Front-Center	645.6mm	665.6mm	685.6mm	712.6mm
Front-Center Horizontal	645.3mm	665.3mm	685.3mm	712.3mm
Wheelbase	1030.3mm	1050.3mm	1070.3mm	1097.3mm
Fork Offset/Rake	40mm	40mm	40mm	40mm
Fork Length (Axle-To-Crown)	480mm	480mm	480mm	480mm
Trail	81.7mm very high	81.7mm very high	81.7mm very high	81.7mm very high
Mechanical Trail	76.6mm	76.6mm	76.6mm	76.6mm
Wheel Flop	26.8mm	26.8mm	26.8mm	26.8mm
Tire to Pedal Spindle	142.8mm 170 mm cranks	162.8mm 170 mm cranks	182.8mm 170 mm cranks	209.7mm 170 mm cranks
Pedal Spindle to Ground Clearance	142.8mm 170 mm cranks	142.8mm 170 mm cranks	142.8mm 170 mm cranks	142.8mm 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.btr-fabrications.com/products/blinder-frame/#frame-options

Geometry