RideIn geometry lab
Compare bike geometry
Put up to four frames side by side. Choose the bike you know as the baseline, inspect exact differences and copy a shareable comparison URL.
Side-by-side tool
Choose up to four frames
The first selection is the baseline until you choose another. Positive and negative values show the difference from it.
Bike 1
Bike 2
Bike 3
Stack and reach map
Further right means a longer frame reach. Higher means a taller frame stack.
| Measurement | Boardman SLR 8.6 SM | Boardman ADV 8.9 Black MD | Boardman MTR 8.9 MD |
|---|---|---|---|
| Edition | 2021 | Current catalogue | Current catalogue |
| Rider height | 170–179 cm | 177–183 cm | 168–177 cm |
| Inside leg | 74–82 cm | 78–85 cm | 74–85 cm |
| Wheel size | 700c | 700c | 29-inch |
| Stack | 547 | 578+31mm | 610+63mm |
| Reach | 378 | 385+7mm | 460+82mm |
| Effective top tube | 540 | 555+15mm | 595+55mm |
| Seat tube | 515 | 530+15mm | 430-85mm |
| Head tube | 140 | 150+10mm | 110-30mm |
| Head angle | 72° | 71°-1° | 65.5°-6.5° |
| Seat angle | 73.5° | 73.5°0° | 77.5°+4° |
| Chainstay | 415 | 430+15mm | 440+25mm |
| Fork offset | 48 | 50+2mm | 42-6mm |
| Bottom-bracket drop | 68 | 73+5mm | 33-35mm |
| Crank length | 170 | 173+3mm | 1700mm |
| Stem length | 90 | 80-10mm | 45-45mm |
| Handlebar width | 400 | 420+20mm | 780+380mm |
| Stack ÷ reach | 1.45 | 1.50+0.05 | 1.33-0.12 |