We engineered A;spero 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 Cerve;lo All-Carbon, Tapered A;spero Fork with Adjustable Trail Wheels Alexrims Boondocks-7D, 28h (F), 28h (R), 24mm IW, 6-Bolt, Tubeless Ready Axles Cervelo Indexed Thru-Axles w/ Lever, 12x100/142 Tires Panaracer Gravel King SK Sport Folding 700x38 60tpi Bottom Bracket JY-BB 22/24 Crankset SRAM Apex 1 40T Shifters SRAM Apex 1 HRD, 11 spd Rear Derailleur SRAM Apex 1 Cassette/Freewheel SRAM PG-1130, 11 spd, 11-42 Chain SRAM PC-1110, 11spd Brakes SRAM CenterLine 160mm Handlebars Easton EA50 AX Alloy Stem Easton EA50 Alloy Headset FSA IS2 1-1/8 x 1-1/2 Seatpost Easton EA50 Alloy Saddle Cervelo Road Saddle Pedals Sold separately Accessories & Extras Smartpak 400A Top Tube Storage Bag