POWER SHELL TONGUE

This is the medium flex replacement Power Shell Tongue Stiffener for Nitro boots that feature a removable stiffening insert in the tongue. It’s the piece that slides into the tongue of the boot, under the laces, and allows you to customize the flex and response of your ride by adjusting how stiff your boots feel.
Whether you're dialing in the fit for more support or swapping out a worn part, this insert gives you the ability to fine-tune your fit with ease.

Compatibility

• Specifically designed for all Nitro boots with a removable Power Tongue Stiffener, including:
  
  • Capital TLS / TLS+ (2018 to present)
    
  • Select TLS / TLS+ / BOA / Lace (2015 to present)
    
  • Vertical TLS+ (2026 to present)
    
  • Incline TLS / TLS+ (2020 to present)
    
  • Profile TLS Step On® (2022 to present)
    
  • Darkseid BOA Step On® (2023 to present)
    
  • Dynasty BOA Step On® (2023 to present)
    
  • Cave TLS Step On® (2022 to 2024)

Available Sizes:

• Small: MP 23.0–25.5 / US Men’s 5.0–7.5 / US Women’s 5.5–8.0
  
• Medium: MP 26.0–28.5 / US Men’s 8.0–10.5 / US Women’s 8.5–11.0
  
• Large: MP 29.0–32.5 / US Men’s 11.0–14.5

Additional Info

• Tool-free installation
  
• Sold individually — order two if you need a full set
  
• Be sure to select left or right when adding to cart"