2007 Giant Bicycles OCR Alliance

	430	465	500
Stack	525mm	546mm	577mm
Reach	370mm	374mm	373mm
Stack to Reach Ratio	1.42:1	1.46:1	1.55:1
Seat Tube Length, C-T	430mm	465mm	500mm
Top Tube Length, Effective/Horizontal Center	512mm	531.3mm	549.1mm
Top Tube Slope	12.8deg	11.2deg	10.8deg
Head Tube Angle	71deg	72deg	72.5deg
Seat Tube Angle	75deg	74deg	73deg
Head Tube Length	125mm	145mm	170mm
Bottom Bracket Drop	70mm	70mm	70mm
Bottom Bracket Height	268mm	268mm	268mm
Chainstay Length	418mm	418mm	418mm
Chainstay Length Horizontal	412.1mm	412.1mm	412.1mm
Front-Center	579.9mm	581mm	583.9mm
Front-Center Horizontal	575.7mm	576.8mm	579.7mm
Wheelbase	987.8mm	988.9mm	991.8mm
Fork Offset/Rake	46.4mm	45.8mm	44.7mm
Trail	67.4mm high	61.7mm mid/neutral	59.7mm mid/neutral
Mechanical Trail	63.7mm	58.7mm	57mm
Wheel Flop	20.7mm	18.1mm	17.1mm
Tire to Pedal Spindle	76.9mm 165 mm cranks	73mm 170 mm cranks	73.4mm 172.5 mm cranks
Pedal Spindle to Ground Clearance	103mm 165 mm cranks	98mm 170 mm cranks	95.5mm 172.5 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.giant.co.jp/2007/road/perform/ocr-alliance.html

Geometry