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Spitfire Formula Four Lock-Ins Skateboard Wheels

1 Review
natural (101d)
Color: natural (101d)
Size: Size Chart
In Stock - Qualifies For FREE U.S. Shipping
  • Set of 4 Wheels
Wheel Profile
  • Standard
  • Smooth
Key Features
  • F1 Urethane
Wheel Shape
  • Lock Ins Cut
Wheel Profile

You may notice a discrepancy between what we designate a wide, standard or narrow and what the brands do. This classification is our opinion based on years of skating, as well as looking at the profile of the wheel as it compares to what we believe is a standard profile. You just have to trust us on this.

Standard - Your classic wheel shape, it's not built to excel in specific scenarios like a narrow or wide wheel, but it's appropriate for most situations. If you're new to skating this is where you want to start.


Smooth - Smooth wheels have less surface friction than treaded wheels and are easier to slide.

Key Features

F1 Urethane - Slick top riding surface for increased traction, super abrasion resistant to eliminate flatspots, high density rebound urethane rides hard and fast.

Wheel Shape

Lock Ins Cut - Asymmetrically cut, you can get the benefits of conical outer walls while the inside wall is cut straight, giving you a flat surface to lock in your grinds.

*These specific measurements may not represent every Lock Ins wheel

natural (101d)101a
natural (99d)99a
Diameter (mm):53.055.0
Width (mm):32.032.0
Riding Surface (mm):22.022.0
Suggested Riser Size (in):N/A1/8
Overall Rating
Reviewed by 1 customers

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Perfect for grinds
by Kyle Kachinske (Verified Buyer)
Posted on 9/25/2017
Spitfire Formula Four Lock-Ins Skateboard Wheels - natural (99d)
They do just what they say. Lock in!
0 person has found this review helpful

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