Diamondback Bike Size Chart
Size chart and fit guide for 2026
Diamondback focuses on making quality cycling accessible with bikes that deliver reliable performance across every price point. Their sizing uses straightforward height-based recommendations that make it easy for new riders to find the right fit, while their higher-end models feature geometry comparable to boutique brands at a fraction of the cost.
Diamondback Size Charts by Category
Diamondback Mountain Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| S | 5'2" - 5'7"(157 - 170 cm) | 28.3" - 30.7"(72 - 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" - 34.6"(82 - 88 cm) |
| XL | 6'2" - 6'7"(188 - 200 cm) | 34.3" - 37.0"(87 - 94 cm) |
S
Height: 5'2" – 5'7" (157–170 cm)
Inseam: 28.3" – 30.7" (72–78 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" – 34.6" (82–88 cm)
XL
Height: 6'2" – 6'7" (188–200 cm)
Inseam: 34.3" – 37.0" (87–94 cm)
Diamondback Road Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| 48 | 4'12" - 5'3"(152 - 160 cm) | 27.2" - 28.7"(69 - 73 cm) |
| 50 | 5'2" - 5'5"(158 - 165 cm) | 28.3" - 29.9"(72 - 76 cm) |
| 52 | 5'4" - 5'7"(163 - 170 cm) | 29.5" - 31.1"(75 - 79 cm) |
| 54 | 5'6" - 5'9"(168 - 176 cm) | 30.7" - 32.3"(78 - 82 cm) |
| 56 | 5'9" - 6'0"(175 - 183 cm) | 31.9" - 33.5"(81 - 85 cm) |
| 58 | 5'11" - 6'3"(181 - 190 cm) | 33.1" - 35.0"(84 - 89 cm) |
| 61 | 6'2" - 6'6"(188 - 198 cm) | 34.6" - 36.6"(88 - 93 cm) |
48
Height: 4'12" – 5'3" (152–160 cm)
Inseam: 27.2" – 28.7" (69–73 cm)
50
Height: 5'2" – 5'5" (158–165 cm)
Inseam: 28.3" – 29.9" (72–76 cm)
52
Height: 5'4" – 5'7" (163–170 cm)
Inseam: 29.5" – 31.1" (75–79 cm)
54
Height: 5'6" – 5'9" (168–176 cm)
Inseam: 30.7" – 32.3" (78–82 cm)
56
Height: 5'9" – 6'0" (175–183 cm)
Inseam: 31.9" – 33.5" (81–85 cm)
58
Height: 5'11" – 6'3" (181–190 cm)
Inseam: 33.1" – 35.0" (84–89 cm)
61
Height: 6'2" – 6'6" (188–198 cm)
Inseam: 34.6" – 36.6" (88–93 cm)
Diamondback Gravel Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| XS | 4'12" - 5'4"(152 - 163 cm) | 27.2" - 29.5"(69 - 75 cm) |
| S | 5'3" - 5'7"(161 - 170 cm) | 29.1" - 31.1"(74 - 79 cm) |
| M | 5'6" - 5'10"(168 - 178 cm) | 30.7" - 32.7"(78 - 83 cm) |
| L | 5'9" - 6'2"(176 - 188 cm) | 32.3" - 34.6"(82 - 88 cm) |
| XL | 6'1" - 6'6"(186 - 198 cm) | 34.3" - 36.6"(87 - 93 cm) |
XS
Height: 4'12" – 5'4" (152–163 cm)
Inseam: 27.2" – 29.5" (69–75 cm)
S
Height: 5'3" – 5'7" (161–170 cm)
Inseam: 29.1" – 31.1" (74–79 cm)
M
Height: 5'6" – 5'10" (168–178 cm)
Inseam: 30.7" – 32.7" (78–83 cm)
L
Height: 5'9" – 6'2" (176–188 cm)
Inseam: 32.3" – 34.6" (82–88 cm)
XL
Height: 6'1" – 6'6" (186–198 cm)
Inseam: 34.3" – 36.6" (87–93 cm)
Diamondback Hybrid Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| XS | 4'12" - 5'4"(152 - 163 cm) | 27.2" - 29.5"(69 - 75 cm) |
| S | 5'3" - 5'7"(161 - 170 cm) | 29.1" - 31.1"(74 - 79 cm) |
| M | 5'6" - 5'10"(168 - 178 cm) | 30.7" - 32.7"(78 - 83 cm) |
| L | 5'9" - 6'2"(176 - 188 cm) | 32.3" - 34.6"(82 - 88 cm) |
| XL | 6'1" - 6'6"(186 - 198 cm) | 34.3" - 36.6"(87 - 93 cm) |
XS
Height: 4'12" – 5'4" (152–163 cm)
Inseam: 27.2" – 29.5" (69–75 cm)
S
Height: 5'3" – 5'7" (161–170 cm)
Inseam: 29.1" – 31.1" (74–79 cm)
M
Height: 5'6" – 5'10" (168–178 cm)
Inseam: 30.7" – 32.7" (78–83 cm)
L
Height: 5'9" – 6'2" (176–188 cm)
Inseam: 32.3" – 34.6" (82–88 cm)
XL
Height: 6'1" – 6'6" (186–198 cm)
Inseam: 34.3" – 36.6" (87–93 cm)
Diamondback Kids Bike Size Chart
| Size | Height Range | Inseam Range |
|---|---|---|
| 12" wheel | 2'9" - 3'3"(85 - 100 cm) | 13.8" - 17.7"(35 - 45 cm) |
| 16" wheel | 3'3" - 3'10"(100 - 117 cm) | 17.7" - 21.7"(45 - 55 cm) |
| 20" wheel | 3'9" - 4'4"(115 - 132 cm) | 21.7" - 25.6"(55 - 65 cm) |
| 24" wheel | 4'3" - 4'11"(130 - 150 cm) | 24.8" - 28.7"(63 - 73 cm) |
12" wheel
Height: 2'9" – 3'3" (85–100 cm)
Inseam: 13.8" – 17.7" (35–45 cm)
16" wheel
Height: 3'3" – 3'10" (100–117 cm)
Inseam: 17.7" – 21.7" (45–55 cm)
20" wheel
Height: 3'9" – 4'4" (115–132 cm)
Inseam: 21.7" – 25.6" (55–65 cm)
24" wheel
Height: 4'3" – 4'11" (130–150 cm)
Inseam: 24.8" – 28.7" (63–73 cm)
Popular Diamondback Models & Sizing Notes
Specific sizing recommendations for Diamondback's most popular bike models. Geometry measurements shown for reference size (typically M or 54cm).
Century 1
🚴 Road Bike • 2025Endurance road bike with aluminum frame and carbon fork. Sized 48-61 cm - go with the smaller frame if you're between sizes for a sportier reach, or up for more upright comfort on long days.
Stack: 575mmReach: 380mm
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Century 2
🚴 Road Bike • 2025Endurance road bike with aluminum frame, carbon fork, and 105-level components. Same fit as Century 1 - sized 48-61 cm on the standard Diamondback road geometry.
Stack: 580mmReach: 382mm
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Century 4 Carbon
🚴 Road Bike • 2025Carbon-frame endurance road bike with Shimano 105 11-speed and rim brakes. Same endurance fit as the alloy Centurys - taller stack than racy bikes for all-day comfort. Sizes run 50-58 cm.
Stack: 590mmReach: 385mm
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Century 5 Carbon
🚴 Road Bike • 2025Top-spec Century carbon endurance road bike with upgraded wheels and finishing kit. Same endurance geometry across all Centurys - most riders fit true to the published height chart.
Stack: 590mmReach: 385mm
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Podium Vitesse Carbon
🚴 Road Bike • 2025Race-oriented carbon road bike with aggressive geometry - lower stack and longer reach than the Century. Riders coming from endurance bikes should consider sizing down for a more familiar fit.
Stack: 555mmReach: 390mm
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Haanjo 3
🏔️ Gravel Bike • 2025Gravel/adventure bike with drop bars, disc brakes, and clearance for wider tires. Sized like the Diamondback road range - between sizes? Size up for more upright bikepacking comfort, down for sharper handling.
Stack: 575mmReach: 378mm
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Wildwood Classic Comfort
🚲 Hybrid Bike • 2025Comfort-oriented hybrid with upright bars, plush saddle, and 7-speed twist shifter. Use the hybrid size chart - riders should size down if they prefer feet-flat-on-the-ground stability.
Stack: 605mmReach: 385mm
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Octane Youth
🧒 Kids Bike • 2025Youth mountain bike for older kids with hardtail aluminum frame. Use the 24" wheel kids row - fits riders roughly 130-150 cm tall.
Stack: 470mmReach: 360mm
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Lustre 24
🧒 Kids Bike • 2025Girls' 24" wheel mountain bike with aluminum frame and front suspension. Designed for riders ~130-150 cm tall (roughly ages 8-12). Use the 24" wheel kids row.
Stack: 470mmReach: 355mm
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Tess 20
🧒 Kids Bike • 2025Girls' 20" wheel mountain bike for riders roughly 115-132 cm tall (ages 6-9). Aluminum frame, suspension fork, kid-friendly grip-shift gears.
Stack: 430mmReach: 320mm
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Nitrus Youth BMX
🧒 Kids Bike • 2025Classic 20" BMX bike with steel frame and freestyle pegs. Use the 20" wheel kids row - fits riders roughly 115-132 cm tall.
Stack: 420mmReach: 320mm
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Impression Sidewalk
🧒 Kids Bike • 2025Girls' sidewalk bike sold in 12", 20", or 24" wheel sizes. Match wheel size to rider height - 12" for ~85-100 cm, 20" for 115-132 cm, 24" for 130-150 cm.
Stack: 380mmReach: 290mm
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Mini Impression 16
🧒 Kids Bike • 2025Girls' 16" wheel sidewalk bike with training wheels and full chainguard. Fits riders ~100-117 cm tall (ages 4-6) - use the 16" wheel kids row.
Stack: 350mmReach: 270mm
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Diamondback 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
Diamondback Sizing FAQ
Accessories for Diamondback bikes
Helmets, saddles, lights and locks that fit any Diamondback build.
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Bell
Bell Nomad 2 MIPS
This ASIN is Small/Medium 52-57 cm. Check the selected Amazon size/color before checkout.
$84.954.5
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Avasta
AVASTA Kids Bicycle Saddle
Standard saddle rail spacing fits most kids' seatpost clamps. Designed primarily for 12-20" wheel kids' bikes; larger riders may prefer a wider adult saddle.
$20.994.7
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Bell
Bell Lumina 300 Headlight
Tool-free handlebar mount; check bar space around computers, bells, and baskets.
$16.984.3
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Abus
ABUS Granit X-Plus 540
Inner dimensions: 5.5" x 8" (14 x 20cm). Premium size for frame + wheel security. Heavy-duty for high-theft areas.
$159.00
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Camelbak
CamelBak Podium Chill 21oz
Standard 73mm bottle diameter. Optimized cage fit for most bike bottle cages.
$13-184.6
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Giro
Giro Register MIPS
S 51-55 cm, M 55-59 cm, L 59-63 cm
$83.194.7
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Diamondback Comparisons & Guides
Find Your Diamondback Size
Use our free calculators and guides to determine your ideal Diamondback frame size.
Road Bike Calculator
Calculate your Diamondback road bike size
Mountain Bike Calculator
Find your ideal MTB frame size
General Calculator
Universal bike sizing tool
Saddle Size Calculator
Find your ideal saddle width
Continue Reading
Complete Bike Fitting Guide
Dial in saddle height, reach, and handlebar position
Saddle Comfort Tips
Solve discomfort with proper saddle selection and positioning
How to Choose the Right Bike Size
Frame size, standover height, and reach explained
Kids Bike Size Guide 2026
Age & height charts, wheel sizes, and safety tips