The Borla S-Type axle-back exhaust system for the Lexus IS 250 and IS 350 is a 2.25 inch diameter system that delivers the classic S-Type sound with no interior drone. It features single 4.25 inch by 3.5 inch oval polished T-304 stainless steel tips on each muffler assembly. Vehicles from 2014 to 2017 have oval openings in the rear valance, while 2018 to 2026 vehicles have rectangular openings. Borla cat-back and axle-back systems use patented straight-through, multi-core technology to free hidden horsepower while adding exhaust velocity, driving excitement, fuel economy, and the distinctive Borla Sound of Power. Each system is built from premium T-304 austenitic stainless steel with ultra-smooth mandrel bends and CNC precision for an accurate fit. Borla exhaust is handmade in the USA and backed by the Borla Million-Mile Warranty. As a street axle-back system it is 50-state emissions legal.
Specifications:
- System type: axle-back exhaust
- Sound level: S-Type
- Material: T-304 austenitic stainless steel
- Construction: all-welded, mandrel-bent, patented straight-through multi-core
- Pipe diameter: 2.25 inch
- Tips: single 4.25 inch by 3.5 inch oval, polished
- 2014 to 2017 use oval valance openings; 2018 to 2026 use rectangular openings
- 50-state emissions legal
- Made in the USA
- Part number: 11898
Vehicle Applications:
- 2014 Lexus IS 250
- 2015 Lexus IS 250
- 2014 Lexus IS 350
- 2015 Lexus IS 350
- 2016 Lexus IS 350
- 2017 Lexus IS 350
- 2018 Lexus IS 350
- 2019 Lexus IS 350
- 2020 Lexus IS 350
- 2021 Lexus IS 350
- 2022 Lexus IS 350
- 2023 Lexus IS 350
- 2024 Lexus IS 350
- 2025 Lexus IS 350
- 2026 Lexus IS 350
FAQ
Which Lexus IS models does this fit?
It fits the 2014 to 2015 Lexus IS 250 and the 2014 to 2026 Lexus IS 350, including F Sport variants. Vehicles from 2014 to 2017 have oval rear valance openings and 2018 to 2026 have rectangular openings.
Is this exhaust street legal?
Yes. As a street axle-back system it is 50-state emissions legal.
What does the S-Type sound level offer?
S-Type is Borla's aggressive mid-tier sound level, delivering a strong, sporty note with no drone inside the cabin.
What are the tips and where is it made?
The system uses single 4.25 inch by 3.5 inch oval polished T-304 stainless steel tips on each muffler. Borla exhaust is handmade in the USA and backed by the Borla Million-Mile Warranty.

