2025 LightCarbon LCTR003 Base

	48	51	54	57
Stack	477.5mm	487mm	501.5mm	530mm
Reach	378mm	405mm	422mm	439mm
Stack to Reach Ratio	1.26:1	1.2:1	1.19:1	1.21:1
Seat Tube Length, C-TTT	495.5mm	505.5mm	520mm	550mm
Top Tube Length, Effective/Horizontal HT Top	510mm	540mm	561mm	586mm
Top Tube Slope	-2.1deg	-2deg	-1.9deg	-1.9deg
Head Tube Angle	72.5deg	72.5deg	72.5deg	72.5deg
Seat Tube Angle	74.5deg	74.5deg	74.5deg	74.5deg
Head Tube Length	80mm	90mm	105mm	135mm
Bottom Bracket Drop	60mm	60mm	60mm	60mm
Bottom Bracket Height	274mm	274mm	274mm	274mm
Chainstay Length	380mm	380mm	380mm	380mm
Chainstay Length Horizontal	375.2mm	375.2mm	375.2mm	375.2mm
Front-Center	550mm	580mm	601.5mm	627mm
Front-Center Horizontal	546.8mm	576.8mm	598.8mm	624.3mm
Wheelbase	922mm	952mm	974mm	999.5mm
Fork Offset/Rake	34.5mm	34.5mm	34.5mm	34.5mm
Fork Length (On-Axis)	368mm	368mm	368mm	368mm
Trail	69.1mm high	69.1mm high	69.1mm high	69.1mm high
Mechanical Trail	65.9mm	65.9mm	65.9mm	65.9mm
Wheel Flop	19.8mm	19.8mm	19.8mm	19.8mm
Tire to Pedal Spindle	46mm 170 mm cranks	76mm 170 mm cranks	97.5mm 170 mm cranks	123mm 170 mm cranks
Pedal Spindle to Ground Clearance	104mm 170 mm cranks	104mm 170 mm cranks	104mm 170 mm cranks	104mm 170 mm cranks

Published Sizing Recommendations

Height

155 cm

164 cm

165 cm

173 cm

174 cm

182 cm

183 cm

190 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.lightcarbon.com/lightcarbon-fixie-carbon-track-bike-frame_p34.html