2021 Trek Bikes Checkpoint ALR

	49 cm	52 cm	54 cm	56 cm	58 cm	61 cm
Stack	532mm	549mm	567mm	586mm	609mm	638mm
Reach	373mm	379mm	383mm	387mm	391mm	397mm
Stack to Reach Ratio	1.43:1	1.45:1	1.48:1	1.51:1	1.56:1	1.61:1
Seat Tube Length, C-T	490mm	520mm	540mm	560mm	580mm	610mm
Top Tube Length, Effective/Horizontal HT Top	515mm	536mm	551mm	566mm	577mm	592mm
Top Tube Slope	6.7deg	5.4deg	5.2deg	5.2deg	5.5deg	5.4deg
Head Tube Angle	71.4deg	71.6deg	71.8deg	72.2deg	72.3deg	72.6deg
Seat Tube Angle	75deg	74deg	73.5deg	73deg	73deg	73deg
Head Tube Length	90mm	107mm	126mm	145mm	171mm	200mm
Bottom Bracket Drop	78mm	78mm	76mm	76mm	74mm	74mm
Bottom Bracket Height	273mm	273mm	275mm	275mm	277mm	277mm
Chainstay Length	425mm	425mm	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	417.8mm	417.8mm	418.2mm	418.2mm	418.5mm	418.5mm
Front-Center	582.5mm	592.4mm	600.7mm	606.6mm	617.9mm	629.9mm
Front-Center Horizontal	577.2mm	587.2mm	595.9mm	601.9mm	613.5mm	625.5mm
Wheelbase	995mm	1005mm	1014mm	1020mm	1032mm	1044mm
Fork Offset/Rake	49mm	49mm	49mm	49mm	49mm	49mm
Trail	66.4mm high	65.1mm high	63.8mm mid/neutral	61.2mm mid/neutral	60.6mm mid/neutral	58.7mm mid/neutral
Mechanical Trail	63mm	61.8mm	60.6mm	58.3mm	57.7mm	56mm
Wheel Flop	20.1mm	19.5mm	18.9mm	17.8mm	17.6mm	16.7mm
Standover Height	749mm	770mm	789mm	808mm	829mm	858mm
Tire to Pedal Spindle	66.5mm 165 mm cranks	71.4mm 170 mm cranks	77.2mm 172.5 mm cranks	83.1mm 172.5 mm cranks	91.9mm 175 mm cranks	103.9mm 175 mm cranks
Pedal Spindle to Ground Clearance	108mm 165 mm cranks	103mm 170 mm cranks	102.5mm 172.5 mm cranks	102.5mm 172.5 mm cranks	102mm 175 mm cranks	102mm 175 mm cranks

	49 cm	52 cm	54 cm	56 cm	58 cm	61 cm
Wheel Size	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD	700C/29 in 622 mm BSD
Tire Width	40mm	40mm	40mm	40mm	40mm	40mm
Tire Width Max	45mm	45mm	45mm	45mm	45mm	45mm
Tire Outer Diameter	702mm	702mm	702mm	702mm	702mm	702mm
Bike Length with Tires	1697mm	1707mm	1716mm	1722mm	1734mm	1746mm
Crank Length	165mm	170mm	172.5mm	172.5mm	175mm	175mm
Handlebar Width	40cm	40cm	42cm	42cm	44cm	44cm
Stem Length	80mm	90mm	90mm	100mm	100mm	110mm
Stem Angle	-7deg	-7deg	-7deg	-7deg	-7deg	-7deg

Published Sizing Recommendations

Height	158 cm to 163 cm	162 cm to 169 cm	167 cm to 174 cm	173 cm to 180 cm	179 cm to 186 cm	184 cm to 191 cm
PBH	74 cm to 77 cm	76 cm to 79 cm	78 cm to 82 cm	81 cm to 85 cm	84 cm to 87 cm	86 cm to 90 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.trekbikes.com/de/de_DE/bikes/rennräder/gravel-bikes/checkpoint/checkpoint-alr/checkpoint-alr-f/s/p/32692/?colorCode=tealdark