2025 Tumbleweed Bicycle Co. Stargazer UDH 29"

	Small	Medium	Extra Medium	Large	Extra Large
Stack	574mm	597mm	630mm	653mm	672mm
Reach	375mm	382mm	392mm	399mm	413mm
Stack to Reach Ratio	1.53:1	1.56:1	1.61:1	1.64:1	1.63:1
Seat Tube Length, C-T	380mm	430mm	460mm	490mm	545mm
Top Tube Length, Effective/Horizontal HT Top	545mm	565mm	585mm	605mm	625mm
Top Tube Slope	23.5deg	20.1deg	19.9deg	18.8deg	14.8deg
Head Tube Angle	69deg	69deg	69deg	69deg	69deg
Seat Tube Angle	73.5deg	73deg	73deg	72.5deg	72.5deg
Head Tube Length	115mm	140mm	175mm	200mm	220mm
Bottom Bracket Drop	63.5mm	63.5mm	63.5mm	63.5mm	63.5mm
Bottom Bracket Height	304.7mm	304.7mm	304.7mm	304.7mm	304.7mm
Chainstay Length	450mm	450mm	450mm	450mm	450mm
Chainstay Length Horizontal	445.5mm	445.5mm	445.5mm	445.5mm	445.5mm
Front-Center	632.7mm	648.6mm	671.5mm	687.4mm	709.4mm
Front-Center Horizontal	629.5mm	645.5mm	668.5mm	684.5mm	706.5mm
Wheelbase	1075mm	1091mm	1114mm	1130mm	1152mm
Fork Offset/Rake	55mm	55mm	55mm	55mm	55mm
Fork Length (Axle-To-Crown)	440mm	440mm	440mm	440mm	440mm
Trail	82.4mm very high	82.4mm very high	82.4mm very high	82.4mm very high	82.4mm very high
Mechanical Trail	76.9mm	76.9mm	76.9mm	76.9mm	76.9mm
Wheel Flop	27.6mm	27.6mm	27.6mm	27.6mm	27.6mm
Standover Height	750mm	784mm	815mm	840mm	875mm
Tire to Pedal Spindle	94.6mm 170 mm cranks	110.5mm 170 mm cranks	133.4mm 170 mm cranks	149.3mm 170 mm cranks	171.2mm 170 mm cranks
Pedal Spindle to Ground Clearance	134.7mm 170 mm cranks	134.7mm 170 mm cranks	134.7mm 170 mm cranks	134.7mm 170 mm cranks	134.7mm 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://tumbleweed.cc/products/stargazer-udh

Geometry