2021 Orro Bikes Terra C 105 Hydro

	XS	S	M	L	XL
Stack	544mm	563mm	587mm	612mm	644mm
Reach	368mm	377mm	387mm	397mm	407mm
Stack to Reach Ratio	1.48:1	1.49:1	1.52:1	1.54:1	1.58:1
Seat Tube Length, C-T	460mm	480mm	510mm	545mm	580mm
Top Tube Length, Effective/Horizontal HT Top	508mm	529mm	553mm	581mm	604mm
Top Tube Slope	11.5deg	11.2deg	10.4deg	9.2deg	8.9deg
Head Tube Angle	71deg	71deg	71deg	71deg	71deg
Seat Tube Angle	75.6deg	74.9deg	74.2deg	73.3deg	72.6deg
Head Tube Length	120mm	140mm	165mm	192mm	225mm
Bottom Bracket Drop	72mm	72mm	72mm	72mm	72mm
Bottom Bracket Height	281mm	281mm	281mm	281mm	281mm
Chainstay Length	420mm	420mm	420mm	422.5mm	425mm
Chainstay Length Horizontal	413.8mm	413.8mm	413.8mm	416.3mm	418.9mm
Front-Center	587.6mm	603.5mm	621.4mm	639.7mm	661.1mm
Front-Center Horizontal	583.2mm	599.2mm	617.2mm	635.7mm	657.1mm
Wheelbase	997mm	1013mm	1031mm	1052mm	1076mm
Fork Offset/Rake	49.8mm	50.3mm	50mm	49.9mm	50.3mm
Trail	68.9mm high	68.4mm high	68.7mm high	68.8mm high	68.4mm high
Mechanical Trail	65.1mm	64.7mm	64.9mm	65.1mm	64.6mm
Wheel Flop	21.2mm	21.1mm	21.1mm	21.2mm	21mm
Tire to Pedal Spindle	64.6mm 170 mm cranks	80.5mm 170 mm cranks	98.4mm 170 mm cranks	116.7mm 170 mm cranks	138.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks	111mm 170 mm cranks	111mm 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.orrobikes.com/shop/2021-terra-c-105-hydro#size-chart-anchor

Geometry