2025 Propain Bicycles Yuma Base

	O/S
Stack	525mm
Reach	365mm
Stack to Reach Ratio	1.44:1
Seat Tube Length, C-T	348mm
Top Tube Length, Effective/Horizontal Center	505mm
Top Tube Slope	22.5deg
Head Tube Angle	65deg
Seat Tube Angle	74.1deg
Head Tube Length	94mm
Bottom Bracket Drop	1mm
Bottom Bracket Height	312.2mm
Chainstay Length	410mm
Chainstay Length Horizontal	410mm
Front-Center	654.6mm
Front-Center Horizontal	654.6mm
Wheelbase	1064.6mm
Wheelbase Max	1065mm
Fork Offset/Rake	41mm
Fork Length (Axle-To-Crown)	500mm
Trail	100.8mm very high
Mechanical Trail	91.4mm
Wheel Flop	38.6mm
Standover Height	665mm
Tire to Pedal Spindle	171.4mm 170 mm cranks
Pedal Spindle to Ground Clearance	142.2mm 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.propain-bikes.com/us/product/bikes/kids/yuma-4-24/

Geometry