ISR Performance MBSE Single Exhaust - 99-05 Lexus IS300 1st Gen

Owners of a 1999-2005 Lexus IS300 who want more exhaust presence without an aggressive look should start with the ISR Performance MBSE single exhaust. Compared with ISR's GT and EP styles, the MBSE uses a larger rear canister that produces a deep, resonant tone while keeping volume in check, with a more subtle appearance at the bumper. It is a catback system, so the stock front section stays in place.

What sets the MBSE apart

• Large rear canister for a deep note without excessive volume
• 3 inch mid section with a large resonator to refine the tone
• TIG welded stainless steel construction
• Polished tip and muffler for a clean, understated finish

Application

1999-2005 Lexus IS300 (first generation).

Included components

• 1x Axle-back muffler section with 4.5 inch polished tip
• 1x Resonated mid pipe
• 2x 2-bolt 3 inch exhaust gaskets
• 4x Bolts
• 4x Nuts

Choosing between ISR IS300 exhausts

If you want the loudest, most aggressive option, look at the GT Single. If you spend time on the highway and want a tone that sounds purposeful at idle and under load but settles down at cruise, the MBSE is the better fit. Both use a 3 inch resonated mid pipe, so the real difference is in the rear canister and how much volume it lets through.

All ISR Performance products are designed for off-road use only.