Bike Size Guide & Geometry
Every A2 comes in four sizes — and with free size exchanges, more front-end adjustability than any bike in its class, and a team of riders one email away, getting your size right is easier than it should be. Use the calculator below (or take the Bike Selector Quiz if you're still choosing your bike), then check the charts.
SP — Triathlon
| Size | Rider height | Height (cm) | Stack / Reach |
|---|---|---|---|
| S (50 cm) | 5'3" – 5'6" | 160 – 167.5 cm | 460 / 371 mm |
| M (53 cm) | 5'7" – 5'10" | 170 – 178 cm | 493 / 394 mm |
| L (55 cm) | 5'11" – 6'2" | 180 – 188 cm | 527 / 416 mm |
| XL (58 cm) | 6'3" – 6'5" | 190 – 196 cm | 560 / 439 mm |
Rogue — Road
| Size | Rider height | Height (cm) | Effective top tube |
|---|---|---|---|
| S (50 cm) | 5'3" – 5'6" | 160 – 167.5 cm | 528 mm |
| M (52 cm) | 5'7" – 5'10" | 170 – 178 cm | 540 mm |
| L (54 cm) | 5'11" – 6'2" | 180 – 188 cm | 552 mm |
| XL (58 cm) | 6'3" – 6'5" | 190 – 196 cm | 567 mm |
Between sizes?
- On the border between two sizes? We generally recommend sizing up for comfort — unless you're an experienced triathlete prioritizing an aggressive aero position on the SP, in which case staying down (or even sizing down, with a professional bike fit) can be the faster choice.
- A longer-than-average inseam for your height pushes you toward the larger size; shorter-than-average toward the smaller. The calculator above factors this in.
- Under 5'3" or over 6'5"? Talk to us — we'll personally help you find a setup that fits.
Adjustability is the real fit story
Every SP ships with the SAGS adjustable cockpit (140 mm of fore/aft pad range) and the SASP seatpost (up to 120 mm of saddle travel) — so your frame size is the starting point, not a straitjacket. And if the size still isn't right when the bike arrives, exchanges are free within 30 days.