Rinehart 4 Slip-On Mufflers For Indian Chief / Super Chief Wake up your Indian Chief with a set of 4 Slip-On Mufflers from Rinehart Racing. These 4 Slip-ons offer a deep, warm tone with an aggressive punch when you get into it. Massive attention to detail went into this specially engineered 4 muffler body and proprietary 2.5 baffle, giving you the highest quality, best sounding, and strongest performing Chief muffler on the market! Features: Includes low profile end caps 50 State Emissions compliant Note: No tuning required or recommended, when installed on Catalyst equipped OEM headers.