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

The ISR Performance MBSE Exhaust for the 1st-gen Lexus IS300 is the subtler entry in our IS300 exhaust lineup. A large rear canister muffler delivers a deep tone without the visual aggression of our GT or EP-style systems, and a 3" mid pipe with a large resonator keeps cruise drone in check while letting the 2JZ-GE breathe.

What It Does

Catback replacement system. Bolts to the factory mid-section flange and replaces the rear muffler and resonator with a 3" mandrel-bent stainless setup. The MBSE's large rear canister keeps the tone deep and refined, while the resonated mid pipe softens the high-frequency edge that the factory exhaust loses entirely. If you want a more aggressive look, see our IS-GT-IS300-1G GT Single Exhaust for IS300.

Fitment

1999-2005 Lexus IS300 1st Gen (XE10 chassis, 2JZ-GE).

What's in the Box

• 1x axle-back muffler section with 4.5" tip
• 1x resonated mid pipe
• 2x 2-bolt 3" exhaust gaskets
• 4x bolts
• 4x nuts

Product Details

Brand: ISR Performance

Part Number: IS-MBSE-IS300-1G

Type: MBSE catback exhaust

Vehicle Fitment: 1999-2005 Lexus IS300 1st Gen (XE10, 2JZ-GE)

Material: Stainless steel, TIG welded

Piping: 3"

Tip: 4.5" polished

Muffler: Large rear canister (subtler than GT/EP variants)

Resonator: On mid pipe

Alternative IS300 Exhaust: IS-GT-IS300-1G (more aggressive GT Single style)

Sold: Complete kit

Legality: Off-road and competition use only