Lucas Speed Co. – Gen 1 B58 5" High-Flow Downpipe
Lucas Speed Co. Gen 1 B58 5" High-Flow Downpipe
Upgrade your B58 the right way. Our 5" downpipe is engineered for the best balance of flow, durability, and fitment. Whether you’re running a hybrid turbo, E-blend, or just waking up a stock daily, this is one of the most impactful mods you can do.
🔥 Performance Gains
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Faster spool + improved throttle response
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Increased horsepower & torque across the entire powerband
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Deeper, louder, more aggressive exhaust tone
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Drops backpressure for safer, more efficient tuning
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Supports high-power builds (Vargas, Pure, SteamSpeed, etc.)
🛠 Premium Construction
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304 stainless steel
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True 5-inch inlet for maximum flow
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Beautiful TIG welds
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Flex section to reduce stress & vibration
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OEM-style mounting bracket
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Laser-etched Lucas Speed Co. logo
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Available with O2 spacer add-on if needed
📦 Fitment – Gen 1 B58 Engines (5-bolt)
2016–2019 BMW models:
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340i / 440i
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240i / M240i
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540i (Gen 1)
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X3 / X4 B58 (Gen 1)
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Toyota Supra is not compatible (Gen 2 B58)
Before/After
Before
After
FAQs
Are your carbon fiber parts real dry carbon or overlays?
All Lucas Speed Co carbon products are made from 100% pre-preg dry carbon fiber, autoclave-cured for maximum strength, perfect weave alignment, and OEM-grade fitment.
Do your products fit OEM mounting points?
Yes — every product is designed to match factory clips, brackets, and bolt locations.
Most parts feature direct bolt-on installation with no trimming or coding required.
Are your parts compatible with cars that have ACC (Adaptive Cruise Control)?
Yes — for grilles and front aero, we offer ACC and Non-ACC versions.
Make sure to select the correct version based on your vehicle’s sensor setup.
How long does shipping take?
Processing typically takes 1–3 business days.
Shipping time varies based on location, but most U.S. and international orders arrive within 5–12 business days.
Tracking information is provided with every order.
What is your return policy?
Unused items in original packaging may be returned within 30 days of delivery.
Installed or modified products cannot be returned.
Carbon fiber items must be inspected before installation — we cannot accept returns once mounted.
Are your exhaust valve controllers plug-and-play?
Yes — all Lucas Speed Co valve controller kits are full plug & play with no coding, cutting, or tuning required.
They include complete wiring harnesses and remotes.
How can I verify which products fit my car?
Each product page lists all compatible models.
If you’re unsure, you can DM us on Instagram or email us at lucasspeedco@gmail.com with your VIN for confirmation.
What should I do if my package arrives damaged?
Contact us within 48 hours with photos of the packaging and the item.
We’ll resolve it immediately with a replacement or solution.
WHY THOUSANDS OF ENTHUSIASTS TRUST US
Lucas Speed Co delivers precision-engineered performance parts crafted specifically for BMW drivers who demand the best.
Perfect OEM-Grade Fitment — Every Time
No guessing. No forcing. Every Lucas Speed Co product is engineered, tested, and refined to fit your exact BMW model with factory-level precision.
Premium Performance Materials
Our carbon products are made from 100% pre-preg dry carbon fiber, autoclave-cured for unmatched strength, flawless finish, and long-lasting durability. Every component meets the standards of true performance engineering.
Expert, Enthusiast-Level Support
Our team is made up of real BMW enthusiasts who understand fitment, sound, performance gains, and build goals. You get white-glove assistance from people who live and breathe the culture.
Trusted by the BMW Community Worldwide
From daily-driven M cars to high-end track builds, Lucas Speed Co parts are featured on some of the cleanest and most respected BMW builds across the globe.
FACILITY NOW OPEN
Expert Installation, Zero Hassle
Upgrade your BMW with confidence. Our certified technicians handle precise, performance-focused installations so you can enjoy every Lucas Speed Co upgrade without lifting a finger.
Performance Tailored to You
We combine engineering expertise with personalized support to ensure every part — from exhaust systems to carbon upgrades — fits your vehicle and your driving style perfectly.
Easy Pick-Up & Fast Service
In a rush? Choose our convenient pick-up option for a quick and seamless handoff of your Lucas Speed Co performance parts.
