Áspero was engineered for pure, unapologetic speed, ready to take down finish lines, KOMs, PRs, and FKTs. A bike built without limits, for the riders looking to test them. It’s stiff—Classics-racing stiff—and performs like you’d want a road bike to perform off-road. We think that makes sense, and it’s what we were trying to do when we were stuffing bigger tires into our existing frames and swapping in aftermarket forks to get a 40mm tire up front.  FEATURES: Two-Position Adjustment: 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. Multiple Configurations: We designed Aspero to fit most 700c x 42mm or 650b x 49mm wheel/tire combinations. Of course, there are variables—rim width, tire casing, and tread depth—which will affect final clearance. We (and the International Organization for Standardization, or ISO), always recommend 4mm of clearance between the tire and frame. Balanced Handling: Stiffness and handling work together to ensure the bike tracks predictably and responds immediately to critical pedal and bracing inputs. SPECS: Frame Aspero Carbon Fork Cervélo All-Carbon, Tapered Aspero Fork Rims/Wheels Fulcrum Rapid Red 300, 12x100(F)/142(R), 24H, 24mm IW, HG freehub, centerlock, tubeless compatible Hubs N/A Spokes N/A Tires WTB Vulpine TCS Light Fast Rolling Dual DNA 60tpi 700x40c Crankset SRAM Apex 1, DUB Wide Chainrings 40T Bottom Bracket SRAM DUB, BBright Chain SRAM Apex, 12 speed Front Derailleur N/A Rear Derailleur SRAM Apex XPLR AXS, 12 speed Cassette/Rear Cogs SRAM Apex XLPR, 11-44, 12 speed Shifters SRAM Apex AXS, 12 speed Handlebars Cervélo AB09 Carbon, 31.8mm clamp, 16 degree flare Stem Cervélo ST36 Alloy Brakes SRAM Apex AXS, 12 speed Pedals Sold Separately Saddle Prologo Dimension STN Seat Post Cervélo SP19 Carbon 27.2 Extras Smartpak 400A Top Tube Storage Bag