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Project Gamma BMW S68 Downpipes for M5 G90 / G99 Touring / 7 Series G70 G73
$2,652.00
- Fits
Not sure it suits your car? Send us your VIN or rego and we'll confirm fitment before you order. Check fitment
In Adelaide? We can fit it at our Stepney workshop. Book fitting
CHASSIS FITMENT NOTICE
100% PLATFORM COMPATIBILITY VERIFIED
Every order is cross-referenced against vehicle specifications, chassis diagrams, and manufacturer technical bulletins prior to order submission to eliminate incorrect part risk.
VIN / Rego Verification: Please supply your vehicle registration or VIN when submitting your enquiry so our technicians can verify fitment before order finalization.
FITMENT GUARANTEED
Every part checked against vehicle specs, registration, or VIN before order finalization.
1-2 WEEK TYPICAL LEAD TIME
Sourced direct from verified manufacturers with active supplier order tracking.
TRANSPARENT FREIGHT
Quoted to your door before you pay, or free pickup at our Stepney workshop.
PROFESSIONAL INSTALLATION AVAILABLE
In-house fitting and calibration in Stepney, Adelaide.
Manufacturer's warranty on every part. Faulty, damaged or not what you ordered? Tell us within 7 days and we cover the return freight. Returns and warranty · Shipping
Freight quoted to your door
This is a large or heavy part, so we quote freight to your postcode before you pay anything. Free collection from our Stepney workshop.
Get a freight quoteWe reply within one business day. Prefer to talk? Call 0422 493 405.
Product description
Project Gamma High-Flow Catless Downpipes for BMW S68 M5 G90 / G99 and 7 Series G70 / G73
Upgrade your BMW S68 twin-turbo V8 platform with Project Gamma high-flow catless downpipes, engineered for improved exhaust flow, reduced backpressure, faster turbo response, and increased performance.
Constructed from premium 304 stainless steel, these downpipes are built for long-term durability, corrosion resistance, and high-temperature performance. Each set features precision CNC-machined V-band connections and flanges for secure fitment, proper sealing, and reliable installation.
Unlike many restrictive factory-style designs, Project Gamma downpipes are designed with a smooth 3D-bent flow path to help maintain strong exhaust velocity from the turbo outlet through the exhaust system. This helps improve turbo efficiency, sharpen throttle response, reduce lag, and support increased horsepower and torque when paired with the proper ECU tune.
Compatible Fitment:
- BMW M5 G90 Sedan — S68 Twin-Turbo V8
- BMW M5 G99 Touring — S68 Twin-Turbo V8
- BMW 7 Series G70 — 07/2021 to 03/2025
- BMW 7 Series G73 — 11/2021 to 02/2025
Key Features:
- High-flow catless design for maximum exhaust flow
- Premium 304 stainless steel construction
- Precision CNC-machined V-band connections and flanges
- TIG-welded for strength and durability
- Smooth 3D-bent piping for improved exhaust velocity
- Reduced backpressure compared to factory downpipes
- Improved turbo spool and throttle response
- Aggressive performance exhaust tone
- Designed for tuned S68 twin-turbo V8 applications
Important Notes:
ECU tuning is required for proper performance and to help prevent check engine light issues. These are high-flow catless downpipes intended for off-road or track use only where permitted by law.
For questions, photos, videos, or fitment support, please email us at addison@sl-autowerkes.com or message us on Instagram @project_gamma.
More parts for the BMW M5 & M8: CHILLER SYSTEM FOR BMW M5/M8 F90 | F91 | F92 | F93 and CS Style Pre Pregged Dry Carbon Diffuser for BMW F90 M5 2018-2023. See all BMW M5 & M8 parts.
Delivery and fitting
ORDER-IN & LOGISTICS
PRE-PURCHASE & SHIPPING FAQ
How does the order-in process work?
We verify live supplier inventory and issue a comprehensive written quote covering the part, current AUD pricing, GST, and tailored freight to your address (or free Stepney collection). Once you review and approve the quote and vehicle fitment is confirmed, your order is secured directly with our manufacturer allocation.
What are the estimated delivery times?
Typical delivery is 1 to 2 weeks for air freight sourced directly from verified European and international manufacturers. Active consignment tracking is maintained throughout transit until parts arrive at our Stepney workshop for collection, workshop installation, or dispatch to your door.
Can I pick up or have parts installed locally?
Yes. Free local collection is available from our Stepney workshop facility in Adelaide. We also offer professional in-house fitting, alignment, and calibration by European platform technicians. Simply select "Supply and fit at Stepney" when submitting your enquiry.
What happens if fitment is uncertain?
Our workshop technicians cross-reference manufacturer technical schematics, platform codes (such as S58, B58, S63TU), and your vehicle registration or VIN before placing the order. If there are model-year variations, aftermarket modifications, or clearance concerns, our team confirms compatibility with you and the supplier prior to commitment.
Questions
Questions about this part?
Tell us your car's model, year and VIN or rego and we'll confirm fitment, lead time and freight before you pay anything.
More answers on our FAQ page, or visit the workshop at Unit 81, 75–91 Magill Road, Stepney SA.
Enquire about this part
Tell us about your car and we will confirm fitment, availability and a quote. Parts are ordered in; freight is quoted separately. This enquiry does not place an order.
