One of the most fundamental performance factors of a triathlon bike is how it fits the athlete. There’s a reason that pro triathletes and their coaches go to great lengths to get this right—a perfect fit allows the rider to produce maximum power in the most aerodynamic position possible while remaining comfortable over long distances.
A primary objective of the CADEX Tri frameset was to make it easier for athletes of all heights and body dimensions to achieve a perfect fit. The CADEX engineering team started by collecting real-world dimensional data from 150 pro and amateur triathletes. This process led to the creation of five frame sizes: XXS, XS, S, M, and L.
From there, the team looked at stack and reach data, then configured ways for any rider, no matter what frame size they choose, to easily adjust these critical fit factors with greater ease. It’s not just about height, leg length and body proportions. Athletes with similar body dimensions can have very different bike setups depending on variables such as flexibility, core strength and preferred race distance.
Beyond frame size, having a perfect fit comes down to adjusting the key contact points including the pedals, saddle, base bar, arm rests and bar extensions. The CADEX Tri bike makes it easy to adjust the cockpit components using simple hardware.
The overall structure of the cockpit is integrated, but the setups are independent. The arm extensions, designed in collaboration with leading components manufacturer Sync Ergonomics, can be moved forward and backward, and the angles can be changed without the hassle of removing any spacers. This system allows you to raise or lower stack height without moving the extension bars. And the quick-release spacer system allows the cable routing to remain in place while making these adjustments.
The effective seat tube angle can be adjusted by changing the saddle setback position. The rear clamp on the seatpost provides an independent fore/aft saddle adjustment range of 70mm. When the saddle is pushed all the way to the rear setting (red line), the effective seat tube angle is 76 degrees. In its most forward position (green line) the seat tube angle is 80 degrees.
For Ironman triathletes like Kristian Blummenfelt, all these adjustment possibilities add up to the winning formula. “We are constantly looking for ways to improve aerodynamics, pedaling efficiency and of course comfort,” Blummenfelt said. “Over the course of 180km, small changes add up. And sometimes what works in the wind-tunnel doesn’t work as well out on the road. Having the ability to make these adjustments quickly and easily is a game-changer when you’re trying to optimize your position and fit.”