Fits the O.S. 21XZ-B, 21VZ-B, 21-VG, 25XZ, 28XZ and 30VG enginesAluminum construction, polished natural finishEFRA-2089 noise ratingTuned for 1/8 scale offroad truggy applicationsPressure nipple preinstalled
Header Pipe, Muffler, two Long Springs, three Short SpringsEngine to Header Gasket and Header to Muffler Gasket
Fastening to engine and supporting other end of muffler to vehicle'schassis
Length: 6.6" (167mm)Diameter: 1.4" (35.2mm)Exhaust Outlet Diameter: 0.31" (8mm)