Mon-Sat 8am-5pm PT
Sign Up
Serving cyclists
since 2002
Click Here for Larger Image
45Nrth Concave XL Studs Pack of 300
45Nrth Concave XL Studs Pack of 300
45Nrth Concave XL Studs Pack of 300

45Nrth Concave XL Studs Pack of 300

In Stock Now
Ships Free!
Earn $12.50 in VIP credit. Click to Learn More.
This color/size is not eligible for VIP points

Extreme Traction Aluminum Carbide XL Ice Studs

45NRTH utilizes a two-piece construction method to create a reliable and high-performing bicycle tire stud, featuring a concave carbide-aluminum design.

The super-sized concave crown creates open space and inside edges of the bowl, resulting in twice the surface area for increased traction and grip.


  • Concave tip for durability and longevity
  • Aluminum base to save weight
  • Compatible with the 45NRTH stud insertion tool
  • Sold in a pack of 300
  • XL Stud features a larger carbide tip diameter for increased traction

  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Reviewed 3/1/2021
    by yooper
    Cycling Enthusiast
    UP of MI
    Value Rating
    Overall Rating
    You will not regret this upgrade!

    It's amazing the confidence that these studs add to fat biking. I installed these on 45NRTH Dillinger 4's for my Beargrease and it makes a world of difference in added confidence and safety, and adds days that would be non-ride days due to icy conditions, worth the $ 100%.

    Was this review useful to you? Yes/No
    Thank you for your feedback.
    Reviewed 2/15/2021
    by Anonymous
    Cycling Enthusiast
    Value Rating
    Overall Rating
    Buy in bulk

    Used these to stud a Terrene tire, holding in the tire well, great traction on ice. Also replaced some studs in a Vee tire that had some missing and they fit fine.

    Was this review useful to you? Yes/No
    Thank you for your feedback.

    Articles will open in new tab.

    A guide to bicycle tire sizes, both standard on newer bikes and common on older bikes.
    Understanding older bicycle tire sizes.
    A useful chart for determining the tire size you need for your bicycle.
    Tire Tips   
    Tips for proper bicycle tire mounting and tire safety.
    A guide to understanding tire width.
    A guide to understanding bicycle tire tread patterns and what you should look for.

    We are committed to delivering outstanding value and service to our customers, every day.
    Try us today to see why so many of our customers come back again and again.

    *Orders received before 3:00PM Pacific time are shipped the same day (Mon-Sat). Orders over $50
    are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details. 57


    Want to save on all your Bike Tires Direct purchases? Sign up here for exclusive discount offers.

    BikeTiresDirect on Facebook BikeTiresDirect on Instagram BikeTiresDirect on Strava
    5741 NE 87th Ave (I-205 exit 23B) Portland, OR 97220 | 503-342-9985 | [email protected]