This is the LRP Screamer-93 EFRA 2109 1/8 In-Line Tuned Exhaust System. The LRP Screamer-93 is a high quality aluminum tuned pipe developed for competition racing, to provide great throttle control and high top speeds. With its hard chrome-plated finish, the LRP Screamer-93 features precise throttle response in the lower rpm range, combined with smooth and linear performance up to the high rpm range to produce great power characteristics and efficient fuel consumption. The LRP Screamer-93 is a great choice for all current 1/8 offroad engines, and has been IFMAR, EFRA, ROAR, DMC and BRCA approved (EFRA# 2109). Package includes tuned pipe, header, gaskets, set screw, three short springs and two long springs.