Spitfire wheels is the go to brand of skateboard wheels. Founded in 1987 in San Francisco California, Spitfire Wheels is proudly distributed by DLX Distribution. 99du and 101du Formula Four wheels are considered to be some of the very best skateboard wheels available today. Spitfire Formula Four wheels boast high speed performance and maximum flatspot resistance. Formula Formula wheels are recognizable by their creamy off white warm yellowish colour. With a cult following of loyal fans, Spitfire Wheels will continue to be a staple product in skateboarding culture for many years to come. Some popular Spitfire Wheels products include Formula Four, F4, Conical Full, Spitfire Classic, Radial Full, OG Classics, Lock-Ins, Tablets and most are available in 99 and 101 durometer.