Description
ATOMIC REDSTER TR F4 Ski Boots
The Atomic Redster TR F4 is a purpose-built race boot with a powerful 130 flex, delivering World Cup-level precision in a more accessible flex. Its thick, supple shell construction makes it ideal for bigger and stronger athletes who find a 150-flex race boot slightly too stiff, while maintaining the responsiveness and control required for high-level racing.
Built with Atomic’s highly stable and temperature-resistant Formula PU, the Redster TR F4 maintains predictable flex characteristics across a wide range of temperatures. The narrow 93 mm Racing Last precisely positions the foot, while the anatomically shaped toe box provides additional room around the big toe for improved positioning and balance.
The Power Chassis reinforces the area between the toe and heel to increase torsional stability and improve edge grip. Podium Geometry combines forward lean, ramp angle and foot positioning to place the skier in an athletic race stance, while 0° Sole Canting provides a neutral starting position for precise alignment and boot fitting.
Inside, the premium World Cup Race Liner features Atomic’s Ankle Retention System for a secure heel hold and maximum responsiveness. The adjustable Redster AFS Tongue can be repositioned for different foot shapes and instep heights, while Magnesium Elite Buckles and a 55 mm Professional Dual Strap provide a powerful and precise closure.
Key Features
Specifications
| Flex | 130 |
| Last / Fit | 93 mm Racing Last – Narrow / Low Volume |
| Shell Technology | TR Wall Thickness |
| Shell / Cuff Material | Formula PU Shell / PU Cuff |
| Cuff Height | Regular Cuff – All Sizes |
| Boot Sole | Redster Solid Sole |
| Forward Lean | 16° (Default) / 18° |
| Ramp Angle | 4° |
| Norm | Alpine ISO 5355 |
| Weight per Boot | 2317 g (MP 26/26.5) |


