



CTS Turbo BMW F2X/F3X/G20/G30 230i/330i/430i/530i & xDrive B46 Downpipe
The CTS Turbo downpipe for North American B46 BMWs is made to maximize exhaust flow for the highest power gains. Do not compromise performance and sound with factory parts — unleash your BMW's potential. CAD-designed to fit perfectly in place of the factory downpipe, it is hand TIG welded from T304 stainless and back-purged for years of reliable performance.
Product Details
- Designed and validated on a real car in real-world conditions
- Fitment specifically for B46 engines (US-spec vehicles)
- T304 stainless steel, TIG welded back-purged construction
- Big power gain with no loss of refinement
- Sporty exhaust tone that stays subtle when cruising
- No drone with the factory exhaust
Bootmod3 stage 2 software is strongly recommended to keep the CEL away. Fits B46 SULEV engines only, with a flange connection to the exhaust — always check your vehicle before ordering. Stage 2 software is required to avoid a check engine light. Only fits cars without GPF/OPF.
Fitment
- 2016-2020 F20/F22 BMW 220i, 230i incl. xDrive (B46 2.0T)
- 2016-2020 F30/F31 BMW 320i, 330e, 330i incl. xDrive (B46 2.0T)
- 2016-2020 F32/F33/F36 BMW 420i, 430i incl. xDrive (B46 2.0T)
- 2016-2020 G30 BMW 530i, 530e incl. xDrive (B46 2.0T)
- 2016-2020 G11 BMW 730i, 740e incl. xDrive (B46 2.0T)
- 2019-2023 G20 BMW 320i, 330i incl. xDrive (B46 2.0T)
- 2019+ G29 BMW Z4 30i (B46 2.0T)
- 2020+ A91 Toyota Supra 2.0 (B46 2.0T)
Emissions disclaimer: This product is not legal for sale or use on pollution-controlled vehicles operated on public roads and is intended for off-road, race, or closed-course competition use only. You are responsible for compliance with all applicable emissions laws; use on public roads may violate the Federal Clean Air Act (42 U.S.C. § 7522) and similar state laws. Please check your local laws before purchase and installation.
Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.
Pairs well with

CTS Turbo BMW F2X/F3X/G20/G30 230i/330i/430i/530i & xDrive B46 Downpipe
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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