We designed Aspero with clearance for up to 700c x 40mm tires or 650b x 49mm tires. Of course, there are variables—rim width, tire casing, and tread depth—which will affect final clearance. We always recommend 4mm of clearance between the tire and frame.
Trail—front-wheel response to rider input—is the most critical factor in high-velocity handling. Flipping the two-position "Trail Mixer" to compensate for the difference in circumference between a 650b and 700c tire maintains consistent handling by maintaining consistent trail figures.
Stiffness and handling work together to ensure the bike tracks predictably and responds immediately to critical pedal and bracing inputs.
| SIZES | 48, 51, 54, 56, 58, 61 |
| FORK | Cervélo All-Carbon, Tapered Aspero Fork |
| HEADSET | FSA IS2 1-1/8 x 1-1/2 |
| STEM | Cervélo ST27 Alloy |
| HANDLEBAR | Cervélo AB09 Carbon, 31.8mm clamp, 16 degree flare |
| SEATPOST | Cervélo SP19 Carbon 27.2 |
| SADDLE | Prologo Dimension NDR T4.0 |
| SHIFTERS | Shimano GRX, RX810, 11 speed |
| BRAKE CALIPERS | Shimano GRX RX810 |
| BRAKE ROTOR | Shimano MT800 Centerlock |
| FRONT DERAILLEUR | Shimano GRX, RX810, 11 speed |
| REAR DERAILLEUR | Shimano GRX, RX810, 11 speed |
| CASSETTE | Shimano HG800, 11-34, 11 Speed |
| CHAIN | Shimano HG701, 11 speed |
| CRANKSET | Shimano GRX 810, 48/31T, 11 Speed |
| BOTTOM BRACKET | FSA, BBright thread together, 24mm spindle |
| WHEELS | Fulcrum Rapid Red 300 |
| THRU AXLES | Cervelo Aero Thru-Axles, 12x100/142 |
| TIRES | Panaracer Gravel King SK 700x38c |
| MAX TIRE WIDTH (ACTUAL) | 41mm (700c) / 47mm (650b) |
| ACCESSORIES | Smartpak 400A Top Tube Storage Bag |
| 48 | 51 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| Reach | mm | 381 | 398 | 412 | 425 | 437 | 443 |
| Stack | mm | 485 | 506 | 522 | 540 | 559 | 587 |
| Head Tube Angle | 71° | 72.5° | 72.5° | 72.5° | 72.5° | 72.5° |
| Front Center | mm | 582 | 583 | 602 | 622 | 640 | 654 |
| Bottom Bracket Drop | mm | 75 | 75 | 75 | 75 | 75 | 75 |
| Head Tube Length | mm | 87.5 | 101 | 118 | 137 | 157 | 187 |
| Standover Height | mm | 732 | 758 | 773 | 790 | 808 | 836 |
| Trail | mm | 62.4 | 62.4 | 62.4 | 62.4 | 62.4 | 62.4 |
| Wheel Size | 700C | 700C | 700C | 700C | 700C | 700C |
| Fork Offset | mm | 52 | 43 | 43 | 43 | 43 | 43 |
| Wheelbase | mm | 975 | 976 | 995 | 1015 | 1033 | 1047 |
| Chainstay Length | mm | 405 | 405 | 405 | 405 | 405 | 405 |
| Effective Top Tube @75&Deg Seat Tube | mm | 511 | 533 | 551 | 570 | 587 | 600 |
| Effective Top Tube @79&Deg Seat Tube | mm | 475 | 496 | 513 | 530 | 546 | 567 |
