Size (in cm) | 48 | 51 | 54 | 56 | 58 |
Rider Height | 152.4-167.6 | 167.6-172.7 | 172.7-180.3 | 180.3-187.9 | 187.9-195.5 |
Rider Inseam | 70.8-74.4 | 74.4-77.9 | 77.9-83 | 83-85.8 | 85.8-88.9 |
How To Measure?
How To Choose Right Bike Size
The right sized bike is THE most important thing to maximize your performance, enjoyment, and to also ensure you stay injury free. Generally, two measurement required to choose the correct frame size.
1.Your Height
2.Inseam Length
To measure your height, stand against a wall and mark the wall with a pencil so it’s level with the top of your head. Then measure from the ground up to the mark. Having someone assist you makes this a lot easier and a lot more accurate. For your inseam/inner leg measurement, stand against a wall and using a book, hold it in between your legs into your groin and make sure it’s flat against the wall. Measure the height from the book to the floor. These 2 measurements are typically sufficient to match brand specific size charts to help you arrive at a specific frame size, recommended by the brand.
In some rare scenarios – if your height and inseam leg measurements put you in-between two sizes, your upper body length would be the deciding factor in selecting the best size bike for you. Your upper body dimensions determine the ‘Reach’ and this affects how ‘stretched-out’ you will be along the top tube of your bike as you ride it. To work out if you have a long or short reach, you need to determine your ‘APE INDEX‘ which is nothing but arm span minus height.
A positive Ape Index (arm span > height), then we suggest you go for the larger bike sizes.
A negative Ape Index (height > arm span), then you’re probably more comfortable on the smaller size.
Arm Span is the distance between the tips of middle fingers of both arms outstretched at right angles to the body, measured across your back. Much easier if you have a friend do this for you.
Simplicity Meets Performance
Description
Description
The Felt IAx Advanced 105 is the ultimate race-ready bike for triathletes who value simplicity without compromising on performance. Designed for those who prefer the reliability of mechanical shifting, this bike combines speed, efficiency, and user-friendly features to help you perform your best on race day.
Legendary IA Speed, Refined for Versatility: Built on the legacy of Felt’s iconic IA platform, the IAx Advanced 105 offers the same renowned aerodynamics with a more streamlined and simplified design. By removing the nose cone and one-piece front end, this version provides greater fit options for athletes of all levels, ensuring comfort and optimal positioning during every ride.
Dependable Mechanical Shifting: Equipped with the Shimano 105 groupset, this bike delivers reliable, smooth, and efficient shifting. Ideal for triathletes who value the durability and simplicity of a mechanical system, the Shimano 105 ensures consistent performance in all conditions, making it a dependable companion for both training and racing.
Streamlined for Easy Maintenance: The IAx Advanced 105 is designed to make your life easier, from setup to maintenance. Its simplified design allows for hassle-free adjustments and easier travel to events. With fewer components to manage, this bike is perfect for athletes who want to focus on their performance without worrying about complicated technical setups.
Race-Ready Confidence: Whether you’re preparing for your first triathlon or striving for a new personal best, the Felt IAx Advanced 105 delivers the speed and reliability you need.
Combining the proven IA aerodynamics with the simplicity of mechanical shifting, it’s a trusted partner for athletes looking to push their limits while keeping things simple and efficient.