The Alight Disc features an easy on and off frame design, touchpoints to maximize comfort and is available in Alight Disc City models equipped with fenders, a rack and a kickstand making the ride on the bike path or the commute to work more enjoyable.
Key Performance Factors
Versatility
Run errands easily with the Alight’s included fenders, rear rack, and kickstand (select models).
Comfort
Staying comfortable on your rides around town is a non-negotiable, so the Alight has an easy on and off frame, and comes with shock-absorbing grips, a pressure-relieving saddle, and a suspension seatpost.
Control
The Alight’s powerful disc brakes work in dry or wet conditions, and with the increased fork clearance, you can install up to a 40c tire which allows for greater traction.
Specifications
-
SizesXS, S, M, L
-
ColoursNight Haze
-
FrameALUXX-grade aluminum, disc
-
Forkhigh tensile steel, disc
-
ShockN/A
-
HandlebarGiant Sport flat, 25.4mm, 20mm riser XS: 600mm, S: 600mm, M: 640mm, L: 640mm
-
StemGiant Sport, 25.4mm XS: 75mm, S: 75mm, M: 90mm, L: 90mm
-
SeatpostGiant D-Fuse, alloy XS:300mm, S:300mm, M:300mm, L:350mm
-
SaddleLiv ErgoMax
-
Pedalsplatform
-
ShiftersShimano Altus, 2×8
-
Front DerailleurShimano Altus
-
Rear DerailleurShimano Altus
-
BrakesTektro [F] HD-T275, [R] HD-R280 hydraulic [F]160mm, [R]160mm
-
Brake LeversTektro hydraulic
-
CassetteShimano CS-HG318, 11×34
-
ChainKMC Z8.3
-
CranksetForged alloy, 30/46 with chainguard XS: 165mm, S: 165mm, M: 170mm, L: 170mm
-
Bottom Bracketcartridge
-
RimsGiant GX Disc wheelset
-
HubsGiant alloy, QR
-
Spokesstainless
-
TyresGiant S-X3, 700x38c
-
Extras42mm or 40c max tire size, reflective stickers, rack, kickstand and fender frame mounts
Every effort has been made to ensure accuracy throughout this website. However, Giant reserves the right to change bike specifications, features, prices and colours without prior notice.
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.
-
- XS
- 148 cm 163 cm
-
- S
- 158 cm 169 cm
-
- M
- 164 cm 175 cm
-
- L
- 170 cm 183 cm

| XS | S | M | L | ||
| A | Seat Tube Length (MM) | 370 | 420 | 460 | 500 |
| B | Seat Tube Angle | 73.5° | 73.5° | 73.0° | 73.0° |
| C | Top Tube Length (MM) | 535 | 550 | 570 | 590 |
| D | Head Tube Length (MM) | 130 | 150 | 160 | 175 |
| E | Head Tube Angle | 70.0° | 70.5° | 71.0° | 71.0° |
| F | Fork Rake (MM) | 50 | 50 | 50 | 50 |
| G | Trail (MM) | 78.2 | 74.8 | 71.4 | 71.4 |
| H | Wheelbase (MM) | 1044 | 1055 | 1065 | 1085 |
| I | Chain Stay Length (MM) | 445 | 445 | 445 | 445 |
| J | Bottom Bracket Drop (MM) | 62 | 62 | 62 | 62 |
| K | Stack (MM) | 554 | 575 | 587 | 601 |
| L | Reach (MM) | 371 | 380 | 391 | 406 |
| M | Stand Over Height (MM) | 591 | 590 | 591 | 587 |
| N | Handlebar Width (MM) | 600 | 600 | 640 | 640 |
| O | Stem Length (MM) | 80 | 80 | 90 | 100 |
| P | Crank Length (MM) | 165 | 165 | 170 | 170 |
| Q | Wheel Size | 700C | 700C | 700C | 700C |











