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Kästle K90R SC
The Kästle K90R SC is a sporty race boot from Kästle, specifically developed for ambitious junior racers ready to take the next step in competition. Its construction is fully focused on precision, stability and controlled power transmission.
The shorter cuff is tailored to younger athletes and supports a clean, active stance over the ski. Combined with the durable K_Blend TPU shell, the boot delivers consistent performance and reliable flex in varying conditions. With a 90 flex, it offers the ideal balance of direct response and athletic mobility.
The powerful Active Strap adds extra support and a more precise connection, while the Racing liner provides a close, performance-oriented fit. Perfect if you’re looking for a precise, race-driven setup for slalom and giant slalom.
Details
- Flex: 90
- Last: 95.5 mm @ MP 26.5
- Weight: 4050 g / pair @ MP 26.5
- Usage: high-performance racing for young athletes
Features
- K_Blend – TPU shell – combines performance-oriented stiffness with progressive flex for precise control and efficient power transmission
- Short Cuff (SC) – reduced cuff height specifically designed for junior racers, improving stance and mobility
- Apex Drive – enhances power transmission from cuff to shell for increased precision in turns
- Active Strap 45 mm – provides strong shin hold and supports direct energy transfer
- K_Active system – allows individual setup through optional lifter plates and booster straps in different stiffness options
- Racing sole – ensures a direct interface between boot and ski for maximum control
Innenschuh
- Race SC Liner – compact race liner delivering precise hold and direct power transmission while maintaining comfort
- Lace-up system – provides additional support and a more precise foot hold
Schnallen
- 4 micro-adjustable aluminum Active Buckles – allow precise fine-tuning and secure fit for racing performance
Last width
- narrow (low volume)
Pintech
- No
Sole standard
- Alpine Classic / Race
Color
- tourquoise
Questions about the product?
PRODUCT INFORMATION
Article No.: 25h-KAEK90RSC22524
Usage area
Rennsport
Target group:
Children / Youth
Season:
2026/27
Size chart
| MONDOPOINT | 22 - 22,5 | 23 - 23,5 | 24 - 24,5 | 25 - 25,5 | 26 - 26,5 |
|---|---|---|---|---|---|
| EU | 35 -35,5 | 36 - 37 | 38 - 38,5 | 39 - 40 | 40,5 - 41 |
| UK | 3 - 3,5 | 4 - 4,5 | 5 - 5,5 | 6 - 6,5 | 7 - 7,5 |
| SOHLENLÄNGE | 265 mm | 274 mm | 284 mm | 293 mm | 303 mm |
