Spitfire Guerrero Lifer Wheels Set White Yellow 56mm/99a Ride the fire and burn through the streets for life with the Spitfire Guerreo Lifers 99a Wheels. A classic and reliable street wheel from your friends over at Spitfire. Manufactured with a classic street style wheel shape with a 99a durometer for the perfect blend of speed, grip and slide. Designed with Tommy Guerrero detailing on one side of the wheel. Remember to keep the underground lit! Wheels sold in sets of four.