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Alight 3
DD Disc

2021

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PEDAL TO WORK, MEET FRIENDS FOR COFFEE OR BUILD UP FITNESS ON THE BIKE PATH. ALIGHT FITS RIGHT INTO A FUN, HEALTHY LIFESTYLE.

Key Performance Factors

Casual Comfort

An upright riding position, flat handlebars, and 3F Design Philosophy make commuting or a casual spin comfortable without compromising efficiency.

Fun Fitness

The lightweight, balanced geometry of the ALUXX aluminum frame blends speed and stability for a ride that’s just plain fun.

Stylish Versatility

Equipped with integrated dropouts for racks, fenders, or panniers, this bike blends urban style and road bike agility.

Why We Love It

With its lightweight design and upright flat-bar positioning, this premium bike makes it easy to pedal to work, zip around the city and get out onto country roads with the confidence of stopping power through disc brakes. Add a rack and panniers for more extensive weekend exploration or in-town carrying capacity. Modern finishes keep style at the forefront of every ride. Women’s-specific geometry and sizing gives Alight Disc a stable, confident ride quality. And thanks to integrated dropouts, it’s easy to personalize with racks and fenders.

Highlights

2021 Alight Disc with interactive tooltips

Techs & Features

ALUXX Aluminum Technology

Sizing Guide and Geometry

Sizing to be used as a reference only. Please check with a local authorized dealer to determine the correct size.
Available sizes may vary from country to country.

Selection of a button will change the units measurement displayed throughout the entire sizing guide section.
  • XS
      148 cm4’10”  to 163 cm5’4”
  • S
      158 cm5’2”  to 169 cm5’7”
  • M
      164 cm5’5”  to 175 cm5’9”
  • L
      170 cm5’7”  to 183 cm6’0”
bike diagram with measurements referenced in table that follows
Selection of a button will change the units measurement displayed throughout the entire sizing guide section.
  XSSML
ASeat Tube Length (mm) (inch)37014,642016,546018,150019,7
BSeat Tube Angle (degrees)74,0°73,5°73,0°73,0°
CTop Tube Length (mm) (inch)54521,55602257522,659023,2
DHead Tube Length (mm) (inch)1455,71606,31756,91907,5
EHead Tube Angle (degrees)70,0°70,5°71,0°71,0°
FFork Rake (mm) (inch)502502502502
GTrail (mm) (inch)75,13722,868,72,769,22,7
HWheelbase (mm) (inch)106742107342,2107742,4109343
IChain Stay Length (mm) (inch)45117,845117,845117,845117,8
JBottom Bracket Drop (mm) (inch)602,4602,4602,4602,4
KStack (mm) (inch)56622,35832359923,661324,1
LReach (mm) (inch)38315,138815,339215,440315,9
MStand Over Height (mm) (inch)68326,971928,374929,577930,7
NHandlebar Width (mm) (inch)60023,660023,662024,462024,4
OStem Length (mm) (inch)803,1803,1903,51003,9
PCrank Length (mm) (inch)1706,71706,71706,71706,7
QWheel Size 700C700C700C700C
Specs
  • Sizes
    XS, S, M, L
  • Colors
    Desert Sage, Ocean Storm
  • Frame
    ALUXX-Grade Aluminum, disc
  • Fork
    alloy, rack mounts, disc
  • Shock
    N/A
  • Handlebar
    Giant Sport, alloy
  • Stem
    Giant Sport
  • Seatpost
    Giant Sport, 27.2
  • Saddle
    Liv Sport Comfort
  • Pedals
    Giant Urban Fitness
  • Shifters
    Shimano ST-EF41
  • Front Derailleur
    Shimano Tourney
  • Rear Derailleur
    Shimano Tourney
  • Brakes
    Tektro 172 Disc / Tektro MD-U510
  • Brake Levers
    Shimano ST-EF41
  • Cassette
    MF-TZ500, 14x34
  • Chain
    KMC Z7
  • Crankset
    forged alloy, 28/38/48
  • Bottom Bracket
    cartridge
  • Rims
    Giant GX Disc wheelset
  • Hubs
    alloy, loose ball bearing
  • Spokes
    stainless, 14g
  • Tires
    Giant S-X3 Puncture Protect, 700x38c
  • Extras
    fender, rear carrier, kickstand
  • Weight
    The most accurate way to determine any bike’s weight is to have your local dealer weigh it for you. Many brands strive to list the lowest possible weight, but in reality weight can vary based on size, finish, hardware and accessories. All our bikes are designed for best-in-class weight and ride quality.

All specifications listed are subject to change without notice.

Reviews

All specifications listed are subject to change without notice.

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