2020 Trek Bikes Checkpoint AL 4
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Aluminum
- Fork
- Carbon/Composite
- Features
- Disc brake
Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Average stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category | Somewhat upright stack and reachvs category |
Geometry
44 | 44 | 49 | 49 | 52 | 52 | 54 | 54 | 56 | 56 | 58 | 58 | 61 | 61 | |
Stack | 531mm | 531mm | 541mm | 541mm | 561mm | 561mm | 574mm | 574mm | 590mm | 590mm | 607mm | 607mm | 637mm | 637mm |
Reach | 368mm | 368mm | 373mm | 373mm | 376mm | 376mm | 378mm | 378mm | 380mm | 380mm | 382mm | 382mm | 386mm | 386mm |
Stack to Reach Ratio | 1.44:1 | 1.44:1 | 1.45:1 | 1.45:1 | 1.49:1 | 1.49:1 | 1.52:1 | 1.52:1 | 1.55:1 | 1.55:1 | 1.59:1 | 1.59:1 | 1.65:1 | 1.65:1 |
Seat Tube Length, Unknown | 390mm | 390mm | 440mm | 440mm | 475mm | 475mm | 500mm | 500mm | 525mm | 525mm | 548mm | 548mm | 567mm | 567mm |
Top Tube Length, Effective/Horizontal Unknown | 505mm | 505mm | 518mm | 518mm | 537mm | 537mm | 548mm | 548mm | 560mm | 560mm | 568mm | 568mm | 581mm | 581mm |
Top Tube Slope | 18.2deg | 18.2deg | 13.4deg | 13.4deg | 11.6deg | 11.6deg | 10.3deg | 10.3deg | 9.4deg | 9.4deg | 8.7deg | 8.7deg | 9.8deg | 9.8deg |
Head Tube Angle | 70.6deg | 70.6deg | 71.4deg | 71.4deg | 71.7deg | 71.7deg | 71.8deg | 71.8deg | 72.2deg | 72.2deg | 72.3deg | 72.3deg | 72.6deg | 72.6deg |
Seat Tube Angle | 75.5deg | 75.5deg | 75deg | 75deg | 74deg | 74deg | 73.5deg | 73.5deg | 73deg | 73deg | 73deg | 73deg | 73deg | 73deg |
Head Tube Length | 90mm | 90mm | 100mm | 100mm | 120mm | 120mm | 135mm | 135mm | 150mm | 150mm | 170mm | 170mm | 200mm | 200mm |
Bottom Bracket Drop | 80mm | 80mm | 78mm | 78mm | 78mm | 78mm | 76mm | 76mm | 76mm | 76mm | 74mm | 74mm | 74mm | 74mm |
Bottom Bracket Height | 263mm | 263mm | 265mm | 265mm | 265mm | 265mm | 267mm | 267mm | 267mm | 267mm | 269mm | 269mm | 269mm | 269mm |
Chainstay Length | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm | 430mm |
Chainstay Length Horizontal | 422.5mm | 422.5mm | 422.9mm | 422.9mm | 422.9mm | 422.9mm | 423.2mm | 423.2mm | 423.2mm | 423.2mm | 423.6mm | 423.6mm | 423.6mm | 423.6mm |
Front-Center | 585mm | 585mm | 587.3mm | 587.3mm | 593.3mm | 593.3mm | 599.6mm | 599.6mm | 602.6mm | 602.6mm | 608.9mm | 608.9mm | 619.9mm | 619.9mm |
Front-Center Horizontal | 579.5mm | 579.5mm | 582.1mm | 582.1mm | 588.1mm | 588.1mm | 594.8mm | 594.8mm | 597.8mm | 597.8mm | 604.4mm | 604.4mm | 615.4mm | 615.4mm |
Wheelbase | 1002mm | 1002mm | 1005mm | 1005mm | 1011mm | 1011mm | 1018mm | 1018mm | 1021mm | 1021mm | 1028mm | 1028mm | 1039mm | 1039mm |
Fork Offset/Rake | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm | 50mm |
Trail | 67.8mm high | 67.8mm high | 62.7mm mid/​neutral | 62.7mm mid/​neutral | 60.8mm mid/​neutral | 60.8mm mid/​neutral | 60.1mm mid/​neutral | 60.1mm mid/​neutral | 57.6mm mid/​neutral | 57.6mm mid/​neutral | 57mm mid/​neutral | 57mm mid/​neutral | 55.1mm mid/​neutral | 55.1mm mid/​neutral |
Mechanical Trail | 63.9mm | 63.9mm | 59.4mm | 59.4mm | 57.7mm | 57.7mm | 57.1mm | 57.1mm | 54.9mm | 54.9mm | 54.3mm | 54.3mm | 52.6mm | 52.6mm |
Wheel Flop | 21.2mm | 21.2mm | 19mm | 19mm | 18.1mm | 18.1mm | 17.8mm | 17.8mm | 16.8mm | 16.8mm | 16.5mm | 16.5mm | 15.7mm | 15.7mm |
Standover Height | 685mm | 685mm | 723mm | 723mm | 755mm | 755mm | 775mm | 775mm | 794mm | 794mm | 816mm | 816mm | 837mm | 837mm |
Tire to Pedal Spindle | 72mm 170 mm cranks | 72mm 170 mm cranks | 74.3mm 170 mm cranks | 74.3mm 170 mm cranks | 80.3mm 170 mm cranks | 80.3mm 170 mm cranks | 86.6mm 170 mm cranks | 86.6mm 170 mm cranks | 89.6mm 170 mm cranks | 89.6mm 170 mm cranks | 95.9mm 170 mm cranks | 95.9mm 170 mm cranks | 106.9mm 170 mm cranks | 106.9mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 93mm 170 mm cranks | 93mm 170 mm cranks | 95mm 170 mm cranks | 95mm 170 mm cranks | 95mm 170 mm cranks | 95mm 170 mm cranks | 97mm 170 mm cranks | 97mm 170 mm cranks | 97mm 170 mm cranks | 97mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks |
AL 4 Build
44 | 44 | 49 | 49 | 52 | 52 | 54 | 54 | 56 | 56 | 58 | 58 | 61 | 61 | |
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 | 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 | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm | 32mm |
Tire Outer Diameter | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm | 686mm |
Bike Length with Tires | 1688mm | 1688mm | 1691mm | 1691mm | 1697mm | 1697mm | 1704mm | 1704mm | 1707mm | 1707mm | 1714mm | 1714mm | 1725mm | 1725mm |
Stack and Reach vs. Category Trend
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.
Learn more about the Upright/Aggressive ScaleCategory Trend
All-road/GravelSource:trekbikes.com, https://www.trekbikes.com/us/en_US/bikes/road-bikes/gravel-bikes/checkpoint/checkpoint-al/checkpoint-al-4/p/24971/