Giant Size Charts
Official size charts for Giant road bikes, mountain bikes, and youth bikes
About Giant Sizing
Giant offers a comprehensive range of bikes with specific sizing to ensure optimal fit and performance. Their sizing system uses a combination of numerical measurements for road bikes and letter sizing for mountain bikes.
All measurements are based on Giant's official specifications, providing accurate sizing guidance for riders of all heights and disciplines.
Road Bike Size Chart
Giant road bikes use traditional frame sizing measured in centimeters. This sizing system provides precise fit options across their road bike range.
| Frame Size (cm) | Rider Height (cm) |
|---|---|
| 50 | 165-175 |
| 52 | 173-183 |
| 54 | 180-190 |
Source: Giant Road Bike Frame Sizes
Mountain Bike Size Chart
Giant mountain bikes use a letter-based sizing system (XS to XL) combined with specific wheel sizes to accommodate different rider heights and riding styles.
| Size | Wheel Size | Rider Height (cm) |
|---|---|---|
| XS | 26" | 145-165 |
| S | 27.5" | 160-170 |
| M | 27.5" | 170-180 |
Source: Giant ATX 2024
Youth Bike Size Chart
Giant youth bikes are sized by wheel diameter and correspond to specific height ranges, making it easy to find the right size as your child grows.
| Wheel Size (inches) | Rider Height (cm) |
|---|---|
| 12 | 90-105 |
| 16 | 100-120 |
Source: Giant Kids' Bikes 12"-16"
Sizing Tips
When choosing your Giant bike size:
Consider your riding style and flexibility when choosing between sizes
Visit a local Giant dealer for a professional fitting session
Take into account your inseam measurement for proper standover height
Consider wheel size options for mountain bikes based on your height and riding style
Important Note
These size charts serve as general guidelines. Individual fit can vary based on factors such as arm length, torso length, and riding style. We recommend visiting an authorized Giant retailer for a professional fitting session and to test ride different sizes.