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When the original F-Si hit back in 2015, it changed the game. Pushed the limits. Changed peoples’ idea of what an XC hardtail could do. It’s even lighter - the lightest MTB frame we’ve ever made. Shorter Ai™ chainstays for more traction and kick on the climbs. Slacker head angle for even more OutFront™ control when things get dicey on descents. Improved stack and reach numbers for amore optimized rider position. Precise compliance tuning throughout the frame for more comfort, seated or standing, all while still having power transfer you need for full-gas efforts. And of course, leading things off, the stunning new Lefty Ocho. It’s a whole new level of XC capability, tailor made to feed the needs of the XC obsessed
The all-new Lefty Ocho rewrites the book on XC performance. The smoothest, stiffest ultra-light XC fork ever made, it floats through chop and steers through the choss like nothing else. Silky smooth and unfazed no matter how hard you push it. Short chainstays do wonders for traction and nimble handling, but they usually come at a cost. Usually ya gotta give something to get something. Not so with Ai, the proprietary Asymmetric Integration drivetrain offset Cannondale have developed for the F-Si.
Key Features
Frame | BallisTec Carbon, SAVE, PF30-83, tapered head tube, Speed Release 12mm thru axle, Ai Offset |
Fork | Lefty Ocho, 29, 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 55mm offset |
Rear Shock | Null |
Rims | Stans NoTubes Crest MK3, 28h, tubeless ready |
Spokes | DT Swiss Competition, straight pull (Ai Offset dish - rear) |
Pedals | Not Included |
Crank | Truvativ Stylo 6K DUB, 34T, Ai offset |
Bottom Bracket | SRAM DUB PF30 MTB83 |
Chain | SRAM GX Eagle, 12-speed |
Rear Cogs | SRAM PG-1230, NX Eagle, 11-50, 12-speed |
Front Derailleur | Null |
Rear Derailleur | SRAM GX Eagle |
Shifters | SRAM GX Eagle, 12-speed |
Handlebar | Cannondale 2 Flat, butted 2014 Alloy, 31.8mm, 3deg rise, 8deg sweep, 760mm |
Grips | Cannondale Locking Grips |
Stem | Cannondale 3, 6061 Alloy, 31.8, 7deg |
Headset | Integrated, 1-1/8 to 1.5, sealed angular contact bearings (Integrated steer stop size small only) |
Brakes | SRAM Level T hydro disc, 160/160mm Centerline rotors |
Brake Levers | SRAM Level T hydro disc |
E-Bike Display | Null |
E-Bike Battery | Null |
E-Bike Charger | Null |
E-Bike Drive Unit | Null |
Saddle | Fabric Scoop Flat Elite, cro-mo rails |
Seatpost | Cannondale 2, Carbon, 27.2 x 400mm, 0mm offset |
Speeds | 12 |
Extras | Speed Release rear axle |
Connectivity | Wheel Sensor |
Fork Travel | (F) 100mm |
Frame Details | SAVE|PF30-83|Tapered head tube|Speed Release 12mm thru axle|Ai Offset |
Frame Travel | Null |
Front Hub | Stans NoTubes Neo Lefty |
Front Tire | (F) Schwalbe Racing Ray Performance 27.5/29 x 2.25, Addix Compound, tubeless ready |
Front Tire Size | 2.25 |
Material | Carbon |
Rear Hub | Stans NoTubes Neo 12x148 w/HG driver |
Rear Tire | (R) Schwalbe Racing Ralph Performance 27.5/29 x 2.25 rear, Addix compound, tubeless ready |
Tire Size | 2.25 |
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