2025 Tumbleweed Bicycle Co. Stargazer 27.5+

	Small	Medium	Extra Medium	Large	Extra Large
Stack	574mm	597mm	630mm	653mm	680mm
Reach	365mm	372mm	382mm	389mm	403mm
Stack to Reach Ratio	1.57:1	1.6:1	1.65:1	1.68:1	1.69:1
Seat Tube Length, C-T	380mm	430mm	460mm	490mm	545mm
Top Tube Slope	23.9deg	20.5deg	20.2deg	19.1deg	15.8deg
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	281.8mm	281.8mm	281.8mm	281.8mm	281.8mm
Chainstay Length	450mm	450mm	450mm	450mm	450mm
Chainstay Length Horizontal	445.5mm	445.5mm	445.5mm	445.5mm	445.5mm
Front-Center	623.1mm	638.9mm	661.4mm	677.2mm	701.5mm
Front-Center Horizontal	619.9mm	635.7mm	658.4mm	674.2mm	698.6mm
Wheelbase	1065.4mm	1081.2mm	1103.9mm	1119.7mm	1144.1mm
Fork Offset/Rake	55mm	55mm	55mm	55mm	55mm
Trail	73.7mm high	73.7mm high	73.7mm high	73.7mm high	73.7mm high
Mechanical Trail	68.8mm	68.8mm	68.8mm	68.8mm	68.8mm
Wheel Flop	24.6mm	24.6mm	24.6mm	24.6mm	24.6mm
Standover Height	750mm	784mm	815mm	840mm	875mm
Tire to Pedal Spindle	107.8mm 170 mm cranks	123.5mm 170 mm cranks	146.1mm 170 mm cranks	161.8mm 170 mm cranks	186.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	111.8mm 170 mm cranks	111.8mm 170 mm cranks	111.8mm 170 mm cranks	111.8mm 170 mm cranks	111.8mm 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://tumbleweed.cc/collections/bikes/products/stargazer?variant=43367492059317

Geometry