Replacement Swivel hook Muffler Springs for Two Brothers Racing exhaust systems, sold individually.
*Note the type of the spring may vary depending on size
14mm springs will only fit Hurricane Mufflers
45mm springs fit Comp-S, Megaphone, M2, M5, Shorty Turn Out, S1R and Tarmac systems
80mm springs fit older Two Brothers Racing Round Mufflers (C-Style Mufflers)