Remark RO-TSE4-S Axleback Muffler Delete Sgl Wall Tips 21-26 Lexus IS300/IS350

Vehicle Fitment

• 2021-2026 Lexus IS300 (2.0L Turbocharged I4, RWD/AWD)
• 2021-2026 Lexus IS350 (3.5L V6, RWD/AWD)

Fitment Notes

• Fits both RWD and AWD drivetrain configurations
• Muffler delete variant - eliminates factory muffler canisters entirely for a more aggressive, unmuted exhaust note; for a retained muffler with milder sound, see RO-TSE4-DM
• Uses factory donut gaskets and factory spring bolts/nuts - OEM hardware required for installation (not included)
• No cutting or welding required; factory exhaust can be reinstalled at any time
• Does not trigger check engine lights and does not affect vehicle emissions
• Single wall tip variant - for a double wall tip option, see RO-TSE4-D
• Sound character varies by model: IS300 (turbocharged 4-cyl) will be quieter; IS350 (3.5L V6) will produce a louder, more aggressive tone

Features

• Muffler delete design - removes restrictive OEM muffler canisters for a sportier, more aggressive exhaust note
• Single wall stainless steel tip construction - sporty, lighter appearance with a larger perceived tip diameter
• 2.5-inch, 16-gauge T304 stainless steel mandrel-bent piping for smooth exhaust flow and reduced back pressure
• Quad 4-inch tips replace factory exhaust garnishes for a bold visual upgrade
• Hand-crafted TIG welding throughout for consistent build quality and precise fitment
• Bolt-on direct replacement - no modifications required, straightforward DIY installation
• Full T304 stainless steel construction for long-term corrosion resistance
• Backed by Remark's limited lifetime warranty against manufacturer defects

Specifications

• System Type: Axle-back muffler delete
• Piping Diameter: 2.5 inches
• Pipe Wall Gauge: 16-gauge T304 stainless steel
• Tip Diameter: 4 inches (quad exit)
• Tip Style: Single wall stainless steel
• Muffler: Deleted (no canister)
• Material: T304 Stainless Steel
• Welding: Hand-crafted TIG welded
• Drivetrain: RWD / AWD
• Platform: 2021-2026 Lexus IS (XE30 Facelift)
• Warranty: Limited Lifetime (manufacturer defects)

Included Components

• 2x Axleback Muffler Delete Pipes with Single Wall 4" Stainless Steel Tips (Left and Right)
• 1x Hardware / Installation Kit

Product Description

The Remark RO-TSE4-S is a muffler delete axleback exhaust system for the 2021-2026 Lexus IS300 and IS350, engineered to remove the factory muffler canisters and deliver a noticeably more aggressive, unmuted exhaust tone. Built from 2.5-inch, 16-gauge T304 stainless steel with mandrel bends and hand-crafted TIG welds, the system bolts directly onto the OEM Y-pipe using factory donut gaskets and spring bolts - no cutting, drilling, or welding required. The quad 4-inch single wall stainless steel tips replace the factory exhaust garnishes with a sportier, larger-looking exit.

The single wall tip design offers a lighter weight and a more overtly performance-oriented aesthetic compared to the double wall variant (RO-TSE4-D), with the full 4-inch outer diameter more visually prominent due to the absence of an inner wall. Sound output varies by engine: the IS300's turbocharged 4-cylinder produces a more composed note, while the IS350's 3.5L V6 delivers a louder, more vocal result. Both left and right side pipes are included, and the factory exhaust can be reinstalled without modification at any time. For a milder sound with retained mufflers, see the RO-TSE4-DM variant.