Good to know: Integrated cockpit
Integrated cockpit (a one-piece bar and stem) on at least one build. Changing the length means replacing the whole cockpit, and not every length exists. Check which length the bike actually ships with before you buy.
Geometry ?
MMR Aelion SL 2026 geometry in sizes XS–XL: stack 501–591 mm, reach 370–405 mm, head angle 71–73.5°.
| XS | S | M | L | XL | |
|---|---|---|---|---|---|
| Stack | 501 mm | 526 mm | 546 mm | 566 mm | 591 mm |
| Reach | 370 mm | 379 mm | 387 mm | 395 mm | 405 mm |
| Head angle | 71° | 72° | 72.5° | 73° | 73.5° |
| Seat angle | 74.5° | 74° | 73.5° | 73° | 72.5° |
| Seat tube (c-c) | 400 mm | 440 mm | 480 mm | 510 mm | 550 mm |
| Head tube | 102 mm | 125 mm | 144 mm | 163 mm | 187 mm |
| Top tube (effective) | 509 mm | 530 mm | 549 mm | 568 mm | 591 mm |
| BB drop | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm |
| Chainstay | 410 mm | 410 mm | 410 mm | 410 mm | 410 mm |
| Wheelbase | 972 mm | 980 mm | 990 mm | 1000 mm | 1012 mm |
| Standover | 716 mm | 754 mm | 774 mm | 797 mm | 831 mm |
| Stock build by size | |||||
| Cranks | 165 mm | 170 mm | 170 mm | 172.5 mm | 175 mm |
| Stem | 90 mm | 100 mm | 100 mm | 110 mm | 120 mm |
| Seatpost setback | 15 mm | 15 mm | 15 mm | 15 mm | 15 mm |
Source: mmrbikes.com, checked 1 Nov 2026 · bar position: worked out from published data
Stock build
Aelion SL 10 €6,399
- Groupset
- Shimano Ultegra Di2 R8150 2×12
- Shifters
- Shimano Ultegra R8170 Di2
- Cranks
- Shimano Ultegra R8100 52-36
- Stem
- Vision Metron 5D ACR Evo
- Handlebar
- Vison Metron 5D ACR Evo
- Seatpost
- Aelion Carbon 15 Offset
- Saddle
- Selle Italia Novus Boost Evo Superflow Carbon
- List price
- €6,399 (mmrbikes.com, 1 Nov 2026)
Source: mmrbikes.com, checked 1 Nov 2026
Frames with similar geometry
Stack and reach within 12 mm of size XS (stack 501 / reach 370 mm).
Stack and reach within 12 mm of size S (stack 526 / reach 379 mm).
Stack and reach within 12 mm of size M (stack 546 / reach 387 mm).
Stack and reach within 12 mm of size L (stack 566 / reach 395 mm).
Stack and reach within 12 mm of size XL (stack 591 / reach 405 mm).
Spotted a mistake or a missing build? Let me know.