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Giant FastRoad SL 3 Flat Bar Road Bike (2021)

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Monthly payments using your credit card at 0% interest.

Building fitness and taking care of your health has never been more fun. The Giant FastRoad SL 3 Men's Flat Bar Road Bike is a lightweight flyer that combines the agility of a road bike with the added confidence and control of a flat handlebar setup.

The perfect balance of road bike speed and city bike versatility. Built on a lightweight ALUXX SL aluminum frameset with a smooth-riding composite fork, this new flat-bar road bike puts the rider in a comfortable position that’s smooth and efficient. The D-Fuse seatpost helps smooth out rough roads, and ergo bar ends keep your hands comfortable on longer rides. The fast-rolling wheels can fit high-volume tires up to 32mm in width, and they’re tubeless ready so you get a smoother ride, more grip, and fewer flat tires. Powerful disc brakes give you added control in all types of weather, and easy-to-use rack mounts make FastRoad SL a smart choice for commuting, fitness riding and weekend adventures.


Light and Agile

ALUXX SL aluminum frame with updated geometry paired with a composite fork minimizes weight and produces a quick, nimble ride quality.

Smooth and Comfortable

Innovative D-Fuse seatpost absorbs road vibrations, and ergonomic bar ends protect your hands, keeping them comfortable on longer rides.

Easy to Accessorize

Smart-mount rack and fender system let you customize the bike for fitness riding, commuting or long-range adventures.

Sizes S, M, ML, L, XL
Colors Metallic Black/Chrome
Frame ALUXX SL-Grade Aluminum
Fork Advanced-Grade Composite, alloy OverDrive steerer
Shock N/A
Handlebar Giant Sport, flat
Stem Giant Sport
Seatpost Giant D-Fuse, alloy
Saddle Giant Approach
Pedals platform pedal
Shifters Shimano Claris
Front Derailleur Shimano Claris
Rear Derailleur Shimano Claris
Brakes Tektro HD-R280
Brake Levers Tektro
Cassette Shimano CS-HG41, 11x34
Chain KMC Z8.3
Crankset ProWheel Ounce 521C, 34/50
Bottom Bracket cartridge
Rims Giant GX wheelset
Hubs Giant GX wheelset, 12mm thru-axle
Spokes Giant GX wheelset
Tires Giant S-R3 AC, puncture protect, 700x32c
SEAT TUBE LENGTH (inch) 17.5 18.1 19.3 20.5 21.7
SEAT TUBE ANGLE 73.5° 73.0° 73.0° 72.5° 72.5°
TOP TUBE LENGTH (inch) 21.5 22 22.6 23.4 24.2
HEAD TUBE LENGTH (inch) 5.1 6.1 7.1 7.9 8.9
HEAD TUBE ANGLE 71.5° 72.0° 72.0° 72.5° 72.5°
FORK RAKE (inch) 2 2 2 2 2
TRAIL (inch) 2.5 2.4 2.4 2.3 2.3
WHEELBASE (inch) 39.9 40.2 40.7 41.1 41.9
CHAIN STAY LENGTH (inch) 16.7 16.7 16.7 16.7 16.7
BOTTOM BRACKET DROP (inch) 2.8 2.8 2.8 2.8 2.8
STACK (inch) 21.1 22.2 23.1 23.9 24.8
REACH (inch) 15.2 15.3 15.6 15.9 16.4
STAND OVER HEIGHT (inch) 27.4 28.3 29.2 30.2 31.3
HANDLEBAR WIDTH (inch) 22.8 22.8 24.4 24.4 24.4
STEM LENGTH (inch) 3.5 3.9 3.9 4.3 4.3
CRANK LENGTH (inch) 6.7 6.7 6.9 6.9 6.9
WHEEL SIZE 700C 700C 700C 700C 700C