2025 Giant Bicycles Trinity Advanced SL

	X-Small	Small	Medium	Large
Stack	490mm	513mm	532mm	551mm
Reach	397mm	412mm	431mm	452mm
Stack to Reach Ratio	1.23:1	1.25:1	1.23:1	1.22:1
Seat Tube Length, Unknown	477mm	508mm	538mm	565mm
Top Tube Length, Effective/Horizontal Unknown	510mm	530mm	554mm	579mm
Top Tube Slope	2.9deg	2deg	0.8deg	0.1deg
Head Tube Angle	72deg	73deg	73deg	73deg
Seat Tube Angle	77deg	77deg	77deg	77deg
Head Tube Length	85mm	105mm	125mm	145mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm
Bottom Bracket Height	271mm	271mm	271mm	271mm
Chainstay Length	405mm	405mm	405mm	405mm
Chainstay Length Horizontal	398.9mm	398.9mm	398.9mm	398.9mm
Front-Center	579.3mm	593.2mm	618.1mm	643.9mm
Front-Center Horizontal	575.1mm	589.1mm	614.1mm	640.1mm
Wheelbase	974mm	988mm	1013mm	1039mm
Fork Offset/Rake	40mm	40mm	40mm	40mm
Trail	68.7mm high	62.4mm mid/neutral	62.4mm mid/neutral	62.4mm mid/neutral
Mechanical Trail	65.4mm	59.7mm	59.7mm	59.7mm
Wheel Flop	20.2mm	17.5mm	17.5mm	17.5mm
Standover Height	758mm	787mm	815mm	838mm
Tire to Pedal Spindle	78.3mm 160 mm cranks	87.2mm 165 mm cranks	107.1mm 170 mm cranks	130.4mm 172.5 mm cranks
Pedal Spindle to Ground Clearance	111mm 160 mm cranks	106mm 165 mm cranks	101mm 170 mm cranks	98.5mm 172.5 mm cranks

Published Sizing Recommendations

Height

159 cm

169 cm

166 cm

176 cm

173 cm

182 cm

181 cm

191 cm

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-bicycles.com/gb/trinity-advanced-sl-time-trial-frameset#geometry