Lucas Speed Co Catless Downpipe — BMW B58 Gen 2 (M340i / M440i / Supra A90 / Z4)
Unleash the full potential of your B58 with the Lucas Speed Co Catless Downpipe, designed for maximum power and sound. Built from high-grade 304 stainless steel, this precision TIG-welded downpipe offers reduced backpressure and increased exhaust velocity for serious performance gains.
Perfect for BMW enthusiasts who want sharper throttle response, faster turbo spool, and that signature B58 roar. Each downpipe is engineered for a direct bolt-on fit with OEM or aftermarket exhaust systems.
Features:
• ⚙️ Precision TIG-welded 304 stainless steel construction
• 💨 Improved turbo spool & throttle response
• 🔊 Aggressive exhaust tone — deeper, louder note
• 🧰 Direct bolt-on design — no cutting or modification required
• 🔩 Compatible with OEM and aftermarket exhaust setups
• 🧱 Heat-resistant flex section for durability and vibration control
• 🏁 Designed for off-road and track use
Fits:
• BMW M340i / M440i (G20, G22, G23, G26 — B58 Gen 2)
• Toyota Supra A90 (B58 Gen 2)
• BMW Z4 M40i (G29)
• BMW 540i / 740i / X3 M40i / X4 M40i (Gen 2 B58)
What’s Included:
• Lucas Speed Co B58 Gen 2 Downpipe
• Mounting bracket and O2 sensor ports
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.
