Description
ATOMIC REDSTER STR F4 Ski Boots
The Atomic Redster STR F4 is a 130-flex race boot designed for narrow feet, with pro-level stability and mid-range stiffness for lighter racers.
About the Product
Compared to the 150 flex race boot, the Atomic Redster STR F4 has a slightly softer 130 flex for lighter or smaller racers still looking for a boot that commands control on the race course. The narrow 91mm Racing Last is perfect for low-volume feet. The World Cup Race Liner creates a responsive connection to the boot so racers can ski as efficiently as possible, while the Ankle Retention System with unique lace loops on the liner locks your ankle in place for the utmost in responsiveness. The boot’s shell is made from a powerful, but thin Formula Plastics material that’s easier to flex and still retains high-performance capabilities. The Redster Adaptive Fit System Tongue can be adjusted for a dialed interface between your shin and the boot, and the super-strength Redster Racing Sole adds grip and power.
Season: 2025/26
Article Code: AE5031760
Weight single piece (g): 2,257 / 26-26.5
Terrain: Race
Boot-binding compatibility: Alpine, Gripwalk, MN
Flex: Hard
Key Features
✅ Podium Geometry – This combination of forward lean, ramp angle, and foot placement puts the skier in an athletic stance.
✅ Power Control – Allows for forward lean adjustment and an extremely solid connection of the cuff to the shell.
✅ Formula PU Shell / PU Cuff – Retain their flex characteristics across a wide range of temperatures for predictable performance.
✅ World Cup Race Liner – Developed with the world’s fastest racers, it uses the finest materials for the ultimate fit and performance.
✅ 55mm Professional Dual Strap – Strap combines an elastic shock absorbing section with an adjustable static section for more power.
✅ Redster Solid Sole – Provides a precise and sensitive interface with alpine bindings.