This is the T-1040 Tuned Silencer (Tuned Pipe) by O.S. Max for the CV and TR series of vehicle engines. FEATURES: Shiny silver colored Specifically designed to develop maximum performance at a relatively lower engine RPM range. Exhaust outlet is slanted to the left toward the inlet INCLUDES: One Tuned Pipe One Pressure Fitting SPECS: Length: 134.5mm (5.295") Outside Diameter: 30mm (1.181") Outlet Inner Diameter: 5mm (0.20") REQUIRES: Manifold (Depends On Kit and Engine) COMMENTS: The current T-1040 series consists of the following: OSMG2608 72106400 MANIFOLD T-1040SC L52 OSMG2609 72106410 MANIFOLD T-1040SC R52 OSMG2970 72103051 TUNED PIPE T-1040 L52 OSMG2972 72103056 TUNED PIPE T-1040 R52 OSMG2982 72106320 TUNED T-1040SC R52 L52 "L" designates it as Left exhaust "52" indicates the ID of the stinger as 5.2mm R52 "R" designates it as Right exhaust "52" indicates the ID of the stinger as 5.2mm L70 "L" designates it as Left exhaust "70" indicates the ID of the stinger as 7.0mm R70 "R" designates it as Right exhaust "70" indicates the ID of the stinger as 7.0mm SC stands for "Spring Connect" which means it uses springs to attach the Tuned Pipe to the HeaderOS EnginesPart OSM72103051