KTM 450 FE 2012-14 / SX-F/XC-F 2013-15 Signature RS-4 FS SS-AL-CF

RS-4 is a unique design that provides an unrivaled combination of power and a quiet exhaust note.

The RS-4 features a duplex chamber, a two-staged stepped baffle and an innovative carbon cone end cap. Stainless systems come with both a 94db and AMA 2-m Max sound insert.

*Full System is only compatible with Fuel Injected models.

Pentagonal-shaped sleeve

Front muffler cap functions as a polyresonant chamber which helps reduce noise

Two-stage stepped baffle

Carbon fiber end-cap

Stainless steel header and tail-pipe

Repack Kits, optional Inserts and Spark Arresters are available for all models