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Overview

Playing Style

  • Power-Focused Playing Style
    This style suits players who thrive on generation strong, top end speed through longer and forceful strides. They come with a stiffer boot that efficiently transfers energy into the rink for maximum power with every stride.

    Acceleration-Focused Playing Style
    For players who rely on quick bursts of speed and agile movements to dominate the game, this type of skate is ideal. These offer a moderately stiff boot that balances support with mobility. These these skates, you can swiftly change direction, make sudden moves and accelerate rapidly.

Fit Profile

  • If multiple categories are selected, it indicates the skate is available in or can be molded to different fit profiles.

    Low Profile Fit
    Narrow forefoot, narrow heel pocket, shallow instep depth and low overall volume.

    Low Profile Skate Graphic

    Shop All Low Profile Skates

    Medium Profile Fit
    Medium forefoot, medium heel pocket, medium instep depth and medium overall volume.

    Medium Profile Skate Graphic

    Shop All Medium Profile Skates

    High Volume Fit
    Wide forefoot, wide heel pocket, deep instep depth and high overall volume.

    High Profile Skate Graphic

    Shop All High Profile Skates

Level of Play Definitions

  • If multiple categories are selected, it indicates the skate is suitable for multiple levels of play.

    Recreational-Level Skates
    Built for the new-to-hockey player or casual skaters that are looking for an affordable option. These are great starter skates, especially for youth players.
    Shop All Recreational Skates.

    Performance-Level Skates
    Designed for players who are confident in their skating stride and are ready to take their performance to the next level. These players are on the rink 1-2 times a week playing mid-to-high level hockey.
    Shop All Performance Skates.

    Elite-Level Skates
    Engineered for the best performance, protection, durability and comfort. These players are usually on the rink three times or more a week and are playing high-level hockey.
    Shop All Elite Skates.

Cut Protection Level

  • This is the general level of protection against cuts.

    • Minimum: Basic protection suitable for competitive play
    • Standard: Balanced protection for intense gameplay. Protects against more severe cuts.
    • Maximum: Highest level of cut resistance for elite gameplay. Ideal for competitive adult hockey and designed for the biggest and fastest players.

ANSI Rated Cut Level

  • Measures the actual cut resistance of materials based on the ANSI/ISEA 105 standard.

    ANSI Level Description Grams of Force
    N/A No specific cut resistance rating provided by the manufacturer. N/A
    A1 Minimal protection; withstands light cuts. 200-499
    A2 Lower-level protection; resists slightly heavier cuts. 500-999
    A3 Low-level protection; suitable for competitive play. 1,000-1,499
    A4 Standard protection; defends against significant cuts. 1,500-2,199
    A5 Elevated protection for intense play. 2,200-2,999
    A6 Extra protection for faster, higher-impact play. 3,000-3,999
    A7 Ultra-high protection. 4,000-4,999
    A8 Premium protection for all levels of play and ages. 5,000-5,999
    A9 Top-tier cut resistance for ultimate protection. 6,000+

Certifications

  • Indicates compliance with safety standards and regulations for hockey gear.

    • USA Hockey: Approved for play under USA Hockey regulations. Ensures gear meets safety standards for organized play in the United States.
    • BNQ: Certified by the Bureau de Normalisation du Quebec for cut-resistant hockey gear. Required for players in Canadian Minor Hockey leagues to ensure on-ice safety.
    • CE: Meets European safety standards for protective equipment. Designed for compliance with regulations across European leagues and recreational play.

Longmount frame designed for stability at speed generated by 90mm wheels and ILQ-9 bearings.
  • Marathon Cuff - Offers a high performance skater ample support with maximum freedom of movement. This contoured, low cut cuff utilizes ultra-light material that equally fit women and men. The maximum forward flex encourages a low and powerful skating position.
  • Closure System - Standard Lace, Powerstrap, Ratcheting Buckle.
  • New ventilated toecap
  • Four Ninety™ Frame - This extruded Longmount frame is designed to accommodate four 90mm wheels. The frame delivers stability that will increase any skater's confidence when skating fast. The smooth roll of its big wheel make the Four ninety and ideal frame for skating any type of terrain.
  • ILQ-9 Standard 608 Size Bearings - Are beyond any ABEC rating. These high performance bearings have a better load rating, better durability, better free spin, and lower weight. This bearing is specifically designed for inline skates.
  • Wheels - 90mm 85A
  • Maximum wheel size: 90mm
  • Single Piece Axles - EXTRA AXLE INCLUDED FOR BRAKE REMOVAL
  • Available Sizes - Men's US 6 - 13

    Softboot™ construction - K2's Softboot™ designs incorporate breathable, comfortable, and flexible materials that fit and function like a second skin while substantially reducing overall weight. A one-piece lasted boot footwear system fastened to the base and supported by an anatomical cuff provides the best combination of comfort and performance.

    Upgrade the fit of your new skates with a pair SuperFeet Synergizer footbeds.

    Click here to learn how SuperFeet insoles can improve the comfort and performance of your skates.

  • Customer Reviews

    Previous Feedback

    The customer comments shown below were gathered using our previous feedback system. While these comments are not used in the calculation of the star rating for this product, they are displayed to help provide you with the most complete customer feedback available.

    Comments:Fit great, skate great, well made. Soft sides feel good but get torn up when you fall. (Personal experience--Ouch.)
    From: Bob, Atlanta GA, USA

    Comments:I recently purchased a pair of K2 Radical 90's (2006 model). The skates are EXCELLENT! there were no "break-in" issues, comfortable right out of the box, and yes, really fast. I purchased one half size smaller than I actually wear (thanks to another reviewer) and got used to the longer frame within a few days. The delivery was fast and will use inlinewarehouse again, thanks.
    From: Joe, Delran, NJ

    Comments:Awesome skate. Bearings and wheels are superb and speed is excellent. Only one thing I'm not thrilled about: boot puts a little too much stress on ankles. Other than that, awesome. Inline Warehouse satisfaction-excellent. Really fast shipping, excellent condition.
    From: Sam Austin, TX, USA 2/21/07

    Comments:I have been training with these Radical 90's for a couple of months, and absolutely love them. They're fast and very comfortable for long skates. The workmanship is very good and wheel and bearing quality is also very good. My only issue thus far is that the straps for the buckles are being chewed up must faster than I would have expected and I will no doubt have to replace them. Aside from this, a very nice skate.
    From: George Granite Bay, California 10/10/06