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Exhaust› Exhaust Pipes, Systems and Components
Flo-Pro
2017-2026 L5P Duramax 6.6L Downpipe
SKU: A40101
Moderate — 2–4 hours
Overview
Note that for 2020 applications, adjustments to the hanger may be necessary for proper fitment. This product is intended for off-road use only, and users must accept the terms of the off-road race-only disclaimer.
Show original supplier description
FLO~PRO Performance Exhaust System – Made in Canada from U.S. Steel Tubing
The FLO~PRO performance exhaust system is built for diesel owners who demand real quality, real performance, and real materials. Every system is manufactured in Canada using premium U.S. steel tubing & Steel Hangers-not offshore metal, not thin imports, and never low-grade overseas exhaust kits.
Available in 16-gauge aluminized steel or T409 stainless steel, FLO~PRO exhaust systems are designed to handle harsh climates, heavy towing, and high exhaust temperatures while delivering a precise, factory-quality fit.
Each kit is engineered for simple, bolt-on installation, featuring pre-welded contour bends, precision contour-bent hangers, and upgraded flanges for proper alignment and superior sealing. Just a clean install that saves time and eliminates frustration.
Once installed, improved exhaust flow helps lower exhaust gas temperatures (EGTs), increase throttle response, and unlock noticeable performance gains, especially under load. And because these systems are built from heavy-gauge U.S. steel, the sound is deep, aggressive, and clean-not thin, raspy, or hollow like imported alternatives.
This is real steel, built the right way.
For powerhouse performance, FLO~PRO delivers.
Material Options
- 16-Gauge Aluminized Steel
Heavy-gauge U.S. steel tubing with a corrosion-resistant aluminized coating. Ideal for daily driving and towing while offering excellent durability and value. - T409 Stainless Steel
Premium U.S.-sourced stainless steel designed for superior corrosion resistance and long-term durability in harsh winter and high-heat environments.
Key Features
- Manufactured in Canada
- Built using U.S. steel tubing, & Steel Hangers.
- Available in 16-gauge aluminized steel or T409 stainless steel
- Pre-welded contour bends for accurate fitment
- Contour-bent hangers for OEM-style alignment
- Upgraded flanges for improved sealing and longevity
- High-quality lap joint clamps included for secure, leak-free connections
- Improved airflow and reduced EGTs
- Signature FLO~PRO exhaust tone-deep, clean, and aggressive
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Flo-Pro |
| Part Number | A40101 |
| Category | Exhaust |
About MOTORMIA
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
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