Do not treat M/L as a rare size
Giant uses M/L to cover a real middle ground for many adult road and gravel riders. If you sit at the top of Medium, compare M/L before jumping straight to Large.
Giant Bike Size Chart: Find Your Frame Size by Height
2026 frame sizes by height and inseam for TCR, Defy, Propel, Revolt, Talon, Trance and Reign
Giant uses compact S-XL sizing on its road and gravel bikes rather than numeric frame labels, so you pick a letter size instead of a 54 or 56. Find your height in the chart, confirm the row against your inseam, then compare stack and reach if you are deciding between a TCR, Defy, Propel, Revolt, Talon, Trance or Reign. Most riders land on the same letter across Giant's road and gravel range, while trail bikes often feel sharper one size down. If you fall between two sizes, the smaller one rides more aggressively and the larger one gives you more room.
Giant Size Charts by Category
Giant Road Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| XS | 5'1" - 5'5"(155 - 165 cm) | 27.6" - 29.5"(70 - 75 cm) |
| S | 5'4" - 5'8"(163 - 173 cm) | 29.1" - 31.1"(74 - 79 cm) |
| M | 5'7" - 5'11"(171 - 180 cm) | 30.7" - 32.7"(78 - 83 cm) |
| M/L | 5'10" - 6'1"(178 - 186 cm) | 32.3" - 34.3"(82 - 87 cm) |
| L | 6'0" - 6'4"(184 - 192 cm) | 33.9" - 35.8"(86 - 91 cm) |
| XL | 6'3" - 6'7"(190 - 200 cm) | 35.4" - 37.8"(90 - 96 cm) |
XS
Height: 5'1" – 5'5" (155–165 cm)
Inseam: 27.6" – 29.5" (70–75 cm)
S
Height: 5'4" – 5'8" (163–173 cm)
Inseam: 29.1" – 31.1" (74–79 cm)
M
Height: 5'7" – 5'11" (171–180 cm)
Inseam: 30.7" – 32.7" (78–83 cm)
M/L
Height: 5'10" – 6'1" (178–186 cm)
Inseam: 32.3" – 34.3" (82–87 cm)
L
Height: 6'0" – 6'4" (184–192 cm)
Inseam: 33.9" – 35.8" (86–91 cm)
XL
Height: 6'3" – 6'7" (190–200 cm)
Inseam: 35.4" – 37.8" (90–96 cm)
Giant Mountain Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| XS | 4'11" - 5'3"(150 - 160 cm) | 26.0" - 28.3"(66 - 72 cm) |
| S | 5'2" - 5'7"(158 - 170 cm) | 27.6" - 30.3"(70 - 77 cm) |
| M | 5'6" - 5'10"(168 - 178 cm) | 29.9" - 32.3"(76 - 82 cm) |
| L | 5'9" - 6'2"(176 - 188 cm) | 31.9" - 34.3"(81 - 87 cm) |
| XL | 6'1" - 6'6"(186 - 198 cm) | 33.9" - 36.6"(86 - 93 cm) |
XS
Height: 4'11" – 5'3" (150–160 cm)
Inseam: 26.0" – 28.3" (66–72 cm)
S
Height: 5'2" – 5'7" (158–170 cm)
Inseam: 27.6" – 30.3" (70–77 cm)
M
Height: 5'6" – 5'10" (168–178 cm)
Inseam: 29.9" – 32.3" (76–82 cm)
L
Height: 5'9" – 6'2" (176–188 cm)
Inseam: 31.9" – 34.3" (81–87 cm)
XL
Height: 6'1" – 6'6" (186–198 cm)
Inseam: 33.9" – 36.6" (86–93 cm)
Giant Hybrid Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| XS | 4'11" - 5'3"(150 - 160 cm) | 26.0" - 28.3"(66 - 72 cm) |
| S | 5'2" - 5'6"(158 - 168 cm) | 27.6" - 29.9"(70 - 76 cm) |
| M | 5'5" - 5'9"(166 - 176 cm) | 29.5" - 31.9"(75 - 81 cm) |
| L | 5'9" - 6'1"(174 - 186 cm) | 31.5" - 33.9"(80 - 86 cm) |
| XL | 6'0" - 6'6"(184 - 198 cm) | 33.5" - 36.6"(85 - 93 cm) |
XS
Height: 4'11" – 5'3" (150–160 cm)
Inseam: 26.0" – 28.3" (66–72 cm)
S
Height: 5'2" – 5'6" (158–168 cm)
Inseam: 27.6" – 29.9" (70–76 cm)
M
Height: 5'5" – 5'9" (166–176 cm)
Inseam: 29.5" – 31.9" (75–81 cm)
L
Height: 5'9" – 6'1" (174–186 cm)
Inseam: 31.5" – 33.9" (80–86 cm)
XL
Height: 6'0" – 6'6" (184–198 cm)
Inseam: 33.5" – 36.6" (85–93 cm)
Giant Gravel Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| XS | 5'1" - 5'5"(155 - 165 cm) | 27.6" - 29.5"(70 - 75 cm) |
| S | 5'4" - 5'8"(163 - 173 cm) | 29.1" - 31.1"(74 - 79 cm) |
| M | 5'7" - 5'11"(171 - 180 cm) | 30.7" - 32.7"(78 - 83 cm) |
| M/L | 5'10" - 6'1"(178 - 186 cm) | 32.3" - 34.3"(82 - 87 cm) |
| L | 6'0" - 6'5"(184 - 196 cm) | 33.9" - 36.2"(86 - 92 cm) |
XS
Height: 5'1" – 5'5" (155–165 cm)
Inseam: 27.6" – 29.5" (70–75 cm)
S
Height: 5'4" – 5'8" (163–173 cm)
Inseam: 29.1" – 31.1" (74–79 cm)
M
Height: 5'7" – 5'11" (171–180 cm)
Inseam: 30.7" – 32.7" (78–83 cm)
M/L
Height: 5'10" – 6'1" (178–186 cm)
Inseam: 32.3" – 34.3" (82–87 cm)
L
Height: 6'0" – 6'5" (184–196 cm)
Inseam: 33.9" – 36.2" (86–92 cm)
Giant E-Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| S | 5'1" - 5'7"(155 - 170 cm) | 28.0" - 30.7"(71 - 78 cm) |
| M | 5'6" - 5'11"(168 - 180 cm) | 30.3" - 32.7"(77 - 83 cm) |
| L | 5'10" - 6'3"(178 - 190 cm) | 32.3" - 35.0"(82 - 89 cm) |
| XL | 6'2" - 6'7"(188 - 200 cm) | 34.6" - 37.4"(88 - 95 cm) |
S
Height: 5'1" – 5'7" (155–170 cm)
Inseam: 28.0" – 30.7" (71–78 cm)
M
Height: 5'6" – 5'11" (168–180 cm)
Inseam: 30.3" – 32.7" (77–83 cm)
L
Height: 5'10" – 6'3" (178–190 cm)
Inseam: 32.3" – 35.0" (82–89 cm)
XL
Height: 6'2" – 6'7" (188–200 cm)
Inseam: 34.6" – 37.4" (88–95 cm)
Fit decision guide
How to choose the right Giant size
Giant's compact road sizing makes the letter on the frame less useful on its own. S, M, M/L and L cover broad height ranges across TCR, Defy, Propel and Revolt, so reach and front-end height matter once the table gives you two possible sizes.
Best first check
Use height to choose the likely letter size, then use inseam and reach to settle overlaps such as M vs M/L.
Road and gravel
Most riders stay on the same letter across TCR, Defy, Propel and Revolt, but the posture changes by model.
Trail bikes
Trance and Reign can feel better one size down if you want easier handling on slow or technical trails.
What to check after height and inseam
Compact frames need a reach check
The sloping top tube gives plenty of standover, so riders sometimes size up too quickly. Reach and bar drop tell you more than standover once both sizes clear safely.
Model family fit notes
TCR and Propel
Road BikeBest for: fast road riders who want a lower, more forward position
Choose the smaller option in an overlap if you want sharper handling or expect to run a longer stem.
Fit tip: Compare reach before changing the frame size. A cockpit swap may solve a small fit issue.
Defy
Road BikeBest for: endurance road riders who want less bar drop than TCR or Propel
Defy can use the same letter size as Giant race bikes, but the taller front end makes the fit feel less stretched.
Revolt
Gravel BikeBest for: gravel and all-day riders who need room for mixed-surface handling
Revolt often matches the rider's Giant road letter size. If you are in an overlap, check reach with your preferred gravel bar width before sizing up.
Talon, Trance and Reign
Mountain BikeBest for: off-road riders choosing between easy handling and more room at speed
If you are between letters, pick the smaller frame for tight trails and the larger one for stability on faster terrain.
If two Giant sizes look possible
Let your riding position make the call after the height row narrows it down. Giant's compact frames give standover room, but a long cockpit is harder to fix than a slightly short one.
- Choose the smaller TCR or Propel if you want a lower race feel.
- Choose the larger Defy or Revolt only if the reach remains comfortable.
- On Trance or Reign, size down for tighter trails and size up for high-speed stability.
Popular Giant Models & Sizing Notes
Specific sizing recommendations for Giant's most popular bike models. Geometry measurements shown for reference size (typically M or 54cm).
Giant TCR Advanced
🚴 Road Bike • 2024Pure race bike with aggressive geometry. Compact frame design pioneered by Giant allows for optimal stiffness and lighter weight.
Stack: 532mmReach: 390mm
Giant Defy Advanced
🚴 Road Bike • 2024Endurance road bike with D-Fuse seatpost for comfort. More upright position suits long-distance riding.
Stack: 575mmReach: 375mm
Giant Trance X
🚵 Mountain Bike • 2024Trail bike with 135mm rear travel. Maestro suspension system provides excellent traction; riders often size down for aggressive riding.
Stack: 615mmReach: 455mm
Giant Revolt Advanced
🏔️ Gravel Bike • 2024Versatile gravel bike with D-Fuse handlebar and seatpost. Geometry balances stability and agility for mixed terrain.
Stack: 580mmReach: 378mm
Giant Trance X E+ 1
⚡ E-Bike • 2025Full-suspension e-MTB with Yamaha SyncDrive Pro3 motor and 800Wh EnergyPak battery. 150mm rear and 160mm front travel with Maestro suspension-the battery-low design keeps weight centered, so sizing follows standard Trance recommendations.
Stack: 620mmReach: 462mm
Giant Explore E+ 1
⚡ E-Bike • 2025E-adventure bike designed for touring and mixed-surface riding with Yamaha SyncDrive Sport motor and 500Wh battery. Relaxed geometry with clearance for 50mm tires-available in traditional and low-step frames for easy mounting.
Stack: 625mmReach: 385mm
Giant Fastroad E+ EX
⚡ E-Bike • 2025Fitness-focused flat-bar e-bike with Yamaha SyncDrive Core motor and 500Wh battery. Sporty geometry bridges the gap between road and hybrid-riders seeking speed with assist should size as they would for Giant's road bikes.
Stack: 595mmReach: 392mm
Giant Propel Advanced
🚴 Road Bike • 2024Aero race bike with integrated cockpit and deeper tube profiles than the TCR - size M sits at 545 mm stack / 383 mm reach, roughly 13 mm taller in stack than the TCR Advanced at the same size. Riders moving from a TCR to a Propel can stay on the same numeric size but should expect a slightly less aggressive cockpit thanks to the integrated bar.
Stack: 545mmReach: 383mm
Giant TCX Advanced Pro
🏔️ Gravel Bike • 2024Dedicated cyclocross race bike - higher BB and steeper head angle than the Revolt gravel frame. Size M is 556 mm stack / 376 mm reach, almost identical to the Revolt Advanced at the same size (580/378), so cross-shoppers can use the same size. Tire clearance is narrower than the Revolt (33 mm UCI legal vs 45 mm) so it is not a substitute for the gravel platform on rough terrain.
Stack: 556mmReach: 376mm
Giant Talon 1 29
🚵 Mountain Bike • 2024Entry-level hardtail with 100 mm fork and 29 inch wheels. Size M (611 mm stack / 424 mm reach) suits riders around 169-179 cm. Conservative geometry compared with the Talon's trail-oriented siblings - first-time mountain bikers cross-shopping the Trek Marlin 7 or Specialized Rockhopper Comp 29 will find similar fit at the same letter size. Run a 27.5 wheelset on XS / S frames for shorter riders.
Stack: 611mmReach: 424mm
Giant Anthem Advanced 29
🚵 Mountain Bike • 2024XC race full-suspension with 100/110 mm travel. Size M (593 mm stack / 450 mm reach) sits between the Talon hardtail (611/424) and the Trance X trail bike (615/455) - the reach is the same as the Trance X but the lower stack gives it a more racy cockpit. Riders coming from older Anthems will find the new frame longer in reach; try a shorter stem before sizing down.
Stack: 593mmReach: 450mm
Giant Reign Advanced
🚵 Mountain Bike • 2024Enduro race bike with 160/170 mm travel and a flip chip that adjusts geometry between High/Mid/Low - size M ranges 617-623 mm stack and 447-455 mm reach depending on setting. Numbers above use the Mid (factory) setting at 620/451. Use Low for steeper terrain (slacker head angle, longer wheelbase) and High for tighter trail. Between sizes, size up if you ride mostly park or bike-park terrain.
Stack: 620mmReach: 451mm
Giant AnyRoad
🏔️ Gravel Bike • 2024Entry-level gravel/adventure bike with relaxed geometry and 700c wheels with 35-45 mm tire clearance. Size M (555 mm stack / 370 mm reach) is more upright than the Revolt Advanced at the same size (580/378 - taller stack but similar reach because the Revolt uses a longer head tube). Use the AnyRoad if you want a budget gravel commuter; step up to the Revolt for serious gravel racing or bikepacking.
Stack: 555mmReach: 370mm
Giant Roam E+ EX
⚡ E-Bike • 2024Flat-bar e-hybrid with Yamaha SyncDrive Pro motor, 800 Wh battery, and a 60 mm SR Suntour fork. Size M sits at 618 mm stack / 401 mm reach - a noticeably more upright fit than the Fastroad E+ EX (595/392), which is tuned for sportier riding. Use the Roam for commuting and light-trail; the Fastroad for fitness rides on pavement.
Stack: 618mmReach: 401mm
Giant ARX
🧒 Kids Bike • 2025Giant's kids' bike line in 16", 20", and 24" wheel sizes covering ages 4 to 11. Lightweight ALUXX aluminum frame, kid-friendly geometry with a low standover, 6-speed grip shift on 20" and 24". Coaster brake on 16"; hand brakes scale up with size.
Stack: 418mmReach: 228mm
Giant Sizing Tips
How to Measure
- • Height: Stand barefoot against a wall and measure from floor to top of head
- • Inseam: Stand with feet 6 inches apart, measure from floor to crotch
- • Arm Reach: For road bikes, measure from shoulder to fingertips
When Between Sizes
- • Comfort priority: Choose the larger size
- • Performance priority: Choose the smaller size
- • Long torso: Size up for better reach
- • Long legs: Size down for better standover
Giant Sizing FAQ
Accessories for Giant bikes
Helmets, saddles, lights and locks that fit any Giant build.
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Giro
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S 51-55 cm, M 55-59 cm, L 59-63 cm
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Saddle Comfort Tips
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Complete Bike Fitting Guide
Dial in saddle height, reach, and handlebar position
How to Choose the Right Bike Size
Frame size, standover height, and reach explained
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Turn your measurements into a confident buy.