Blending locked-in grinds with versatile performance, the Spitfire Formula Four Lock-In Full Skateboard Wheels are built for all-terrain domination. Spitfire's Lock-in Full shape provides maximum grip during grinds, locking you in for precise control. Constructed with Formula Four Urethane, these wheels have a smooth riding surface with a wide profile offering speed and stability. Sold as a set of four in multiple sizes.
Smooth - Smooth wheels come with a shiny coating on the riding surface that feels grippy at first, but wears away quickly.
Wide - More traction and stability at high speed so you'll be less likely to slip out of your line.
Formula Four Urethane - Unmatched abrasion resistance for fewer flat spots. More controllable grip. Lasting speed no matter the terrain. Smooth anti-slick slide and a longer lasting size and shape.
Lock In Full Shape - A wider version of the Lock-In shape. Keeping the asymmetrical shape and design while featuring a conically cut outer wall and a straight edge "lock-in" cut on the inside wall.
99a - Offers more grip than harder wheels and more slide than softer wheels. Great for slick surfaces when you want more control.
| Size | 54mm | 55mm | 57mm |
|---|---|---|---|
| Diameter (mm): | 54.0 | 55.0 | 57.0 |
| Width (mm): | 38.0 | 39.2 | 40.2 |
| Riding Surface (mm): | 25.0 | 26.8 | 27.5 |
| Suggested Riser Size (in): | N/A | 1/8 | 1/8 |
