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2021 Cannondale F-Si Hi-Mod Ultimate Bike

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Product Cannondale F-Si Hi-Mod Ultimate Bike
Model Year 2021
Riding Type Cross Country
Rider Unisex
Sizes and Geometry
XS (27.5"), SM (29"), MD (29"), LG (29"), XL (29") View Geometry
Size XS (27.5") SM (29") MD (29") LG (29") XL (29")
Top Tube Length 553mm 583mm 606mm 629mm 653mm
Head Tube Angle 69.0° 69.0° 69.0° 69.0° 69.0°
Head Tube Length 90mm 90mm 101mm 113mm 126mm
Seat Tube Angle 73.1° 73.1° 73.1° 73.1° 73.1°
Seat Tube Length 330mm 380mm 430mm 480mm 530mm
Bottom Bracket Height 308mm (45mm drop) 308mm (62mm drop) 308mm (62mm drop) 308mm (62mm drop) 308mm (62mm drop)
Chainstay Length 423mm 427mm 427mm 427mm 427mm
Wheelbase 1055mm 1086mm 1110mm 1134mm 1159mm
Standover 715mm 755mm 793mm 828mm 863mm
Reach 380mm 400mm 420mm 440mm 460mm
Stack 569mm 602mm 612mm 623mm 635mm
* Additional Info XS gets 27.5" wheels, SM/MD/LG/XL get 29" wheels
Wheel Size 27.5" (650b), 29"
Frame Material Carbon Fiber
Frame Material Details BallisTec Hi-Mod Carbon, SAVE flex design
Rear Travel Hardtail
Rear Shock N/A
Fork Cannondale Lefty Ocho Carbon, Chamber Damper with remote lockout, OppO spring system, 55mm offset, integrated wheel sensor
Fork Travel 100mm
Head Tube Diameter Tapered, 1.125" top, 1.5" bottom
Headset Integrated, sealed angular contact bearings
Handlebar ENVE M5, carbon, 760mm width, 31.8mm clamp diameter, 5mm rise, 9° sweep
Stem Cannondale 1, 7075 alloy, 31.8mm bar clamp, 7° rise
Grips ESI Chunky Silicone, 32mm diameter
Brakes SRAM Level Ultimate, SRAM CenterLine X 160mm rotors
Brake Levers SRAM Level Ultimate
Drivetrain 1x
Shifters SRAM Eagle AXS controller, 12-speed, electronic wireless
Front Derailleur N/A
Rear Derailleur SRAM XX1 Eagle AXS, 12-speed, electronic wireless
ISCG Tabs No
Chainguide N/A
Cranks SRAM XX1 Eagle Carbon DUB
Chainrings SRAM XX1 Eagle, 34 tooth, Ai custom offset
Bottom Bracket SRAM DUB, MTB83 BB30 PressFit
Pedals N/A
Chain SRAM XX1 Eagle, 12-speed, Copper finish
Cassette SRAM XX1 Eagle XG-1299, 10-52 tooth, 12-speed, Copper finish
Rims ENVE M525 Carbon, 24 hole, tubeless ready
Hubs Front: Cannondale Lefty 60
Rear: DT Swiss, 12x148mm Boost, XD driver
Spokes DT Swiss Aerolite, straight pull
Tires Front: Schwalbe Racing Ray, EVO, SnakeSkin, Addix Speedgrip, tubeless ready, 2.25"
Rear: Schwalbe Racing Ralph, EVO, SnakeSkin, Addix Speed, tubeless ready, 2.25"
Saddle Prologo Dimension NDR CPC, Tirox rails
Seatpost ENVE, carbon, 400mm length, zero offset
Seatpost Diameter 27.2mm
Seatpost Clamp Integrated
Rear Dropout / Hub Dimensions 148x12mm Boost
Max. Tire Size
Bottle Cage Mounts Two inside front triangle
Colors Copper
Warranty Lifetime main frame; 1 year paint, decals, and Cannondale components
Weight N/A
Miscellaneous XS gets 27.5" wheels, SM/MD/LG/XL get 29" wheels
Internal cable routing
Integrated wheel sensor integrates with Cannondale app for speed/route/distance info, bike registration, and service reminders
Price N/A
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