Spitfire Formula Four Lock Ins (Purple) 54mm movie 75” / Length: 31

75” / Length: 31

Independent's first Erick Winkowski signature hollow truck

Santa Cruz led the charge from flat decks with little or no concave to the infamous tech concaves of the late 80s

Hollow Axle

Medium Concave Features:

Spitfire Formula Four Lock Ins (Purple) 54mm movie 75” / Length: 31The Spitfire Formula 4 Lock In 99a Wheels are an asymmetrically shaped wheel designed for more control. A conical cut on one side with a straight edge cut on the opposite built for precise lock in grinds. Tested by Spitfire Team riders, Formula Four Performance Urethane lasted longer, withstood more abuse and performed superior to all other wheels. Spitfire Formula Four Urethane was developed to combine all the desired properties of a performance