Official sizing 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.
| 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) |
| 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) |
| 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) |
Specific sizing recommendations for Diamondback's most popular bike models. Geometry measurements shown for reference size (typically M or 54cm).
Full-suspension trail bike with 130mm travel and Level Link suspension. Modern geometry with competitive reach numbers for the price—riders familiar with boutique brands will find similar sizing in the Release.
Adventure road bike with gravel capability and drop bars. Endurance geometry with clearance for 700x42mm tires—bridges the gap between road and gravel, size as you would for a road bike.
Hardtail trail bike and excellent entry point for mountain biking. Progressive geometry at an accessible price—size based on height chart for confident first-time trail riding.
Performance hybrid for fitness riding and commuting with aluminum frame and flat bars. Upright but sporty geometry—most riders fit true to the published height chart.
Use our free calculators to determine your ideal Diamondback frame size based on your measurements.
Compare sizing across different bike manufacturers to find your perfect fit.