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2017-2023 Harley M8 Billet Cat Tri-Glide and Freewheeler 2:1 Full Exhaust System Trikes Chrome 4" Straight Cut Muffler Perforated Baffle [650Z-32TBB]

by Trikes
$1,298.00
End Caps
CAM
Tuner

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Upgrade your 2017-2023 Harley M8 Tri-Glide or Freewheeler with this chrome Billet Cat 2:1 Full Exhaust System designed for trikes. Featuring a 4" straight cut muffler with a perforated baffle, it enhances exhaust flow for improved engine performance and delivers a crisp, aggressive sound. Built with precision and durability, this exhaust system offers a flawless fit and a polished chrome finish that combines expert craftsmanship with striking style.

FEATURES

  • M8-Specific Design: Built exclusively for Milwaukee-Eight engines, ensuring optimal exhaust flow and power delivery.
  • 2:1 Stepped Header System: Improves exhaust scavenging and throttle response while reducing backpressure.
  • Complete Performance Package: Includes full-length heat shields, exhaust gaskets, bolt kit, and performance baffle—everything you need for a clean install.
  • Sensor Versatility: Equipped with 18mm O2 bungs and 12mm inserts, compatible with both 18mm and 12mm O2 sensors.
  • Boosts Torque & Horsepower: Delivers real-world gains, especially in low-end and midrange powerbands—ideal for daily riding or performance builds.
  • Premium Construction: Precision-crafted for durability, fit, and finish, this system brings both style and substance to your ride.
D&D's Big Bore Baffle Details:

Our Chief Engineer has seen significant increases in mid to high range power on modified engines from stage 4 HD 114 and 117 to aftermarket 124 and up with matching cam and proper tune. The baffle is an all metal perforated 2 1/2 core ( aka big bore baffle) and will be really loud. Since we are a performance-based company, we always give our recommendations based on getting you the best performance, however if you’re willing to sacrifice some performance, you can go with this loud baffle option for the M8 Billet Cat. We do sell this baffle as a replacement so if you already have the M8 Billet cat you can purchase a replacement baffle. However, removing our baffles can be quite difficult, you might consider purchasing the muffler housing with the baffle. The Billet Cat is an end cap design if you damage the end of the muffler you will not be able to attach the end cap when finished. If you decide to change the baffle, the motorcycle will need to be re-tuned.

Notes:
  • Will NOT fit with the Harley Cool Flow Fan.
  • Bluing and Discoloration are caused by improper tuning and will not be covered under Warranty.
  • D&D Performance Exhaust Systems are designed for closed course racing applications.
  • Not for use on pollution controlled vehicles.

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Description

Upgrade your 2017-2023 Harley M8 Tri-Glide or Freewheeler with this chrome Billet Cat 2:1 Full Exhaust System designed for trikes. Featuring a 4" straight cut muffler with a perforated baffle, it enhances exhaust flow for improved engine performance and delivers a crisp, aggressive sound. Built with precision and durability, this exhaust system offers a flawless fit and a polished chrome finish that combines expert craftsmanship with striking style.

FEATURES

  • M8-Specific Design: Built exclusively for Milwaukee-Eight engines, ensuring optimal exhaust flow and power delivery.
  • 2:1 Stepped Header System: Improves exhaust scavenging and throttle response while reducing backpressure.
  • Complete Performance Package: Includes full-length heat shields, exhaust gaskets, bolt kit, and performance baffle—everything you need for a clean install.
  • Sensor Versatility: Equipped with 18mm O2 bungs and 12mm inserts, compatible with both 18mm and 12mm O2 sensors.
  • Boosts Torque & Horsepower: Delivers real-world gains, especially in low-end and midrange powerbands—ideal for daily riding or performance builds.
  • Premium Construction: Precision-crafted for durability, fit, and finish, this system brings both style and substance to your ride.
D&D's Big Bore Baffle Details:

Our Chief Engineer has seen significant increases in mid to high range power on modified engines from stage 4 HD 114 and 117 to aftermarket 124 and up with matching cam and proper tune. The baffle is an all metal perforated 2 1/2 core ( aka big bore baffle) and will be really loud. Since we are a performance-based company, we always give our recommendations based on getting you the best performance, however if you’re willing to sacrifice some performance, you can go with this loud baffle option for the M8 Billet Cat. We do sell this baffle as a replacement so if you already have the M8 Billet cat you can purchase a replacement baffle. However, removing our baffles can be quite difficult, you might consider purchasing the muffler housing with the baffle. The Billet Cat is an end cap design if you damage the end of the muffler you will not be able to attach the end cap when finished. If you decide to change the baffle, the motorcycle will need to be re-tuned.
Notes:
  • Will NOT fit with the Harley Cool Flow Fan.
  • Bluing and Discoloration are caused by improper tuning and will not be covered under Warranty.
  • D&D Performance Exhaust Systems are designed for closed course racing applications.
  • Not for use on pollution controlled vehicles.
Shipping

🚚 Shipping Information

✅ Free Shipping on All U.S. Orders

All orders ship free anywhere in the continental USA — no surprises at checkout.
We also ship to Alaska, Hawaii, and APO/FPO addresses.


Fast Handling & Delivery
Your order ships from our U.S. warehouse within 1–2 business days.
Once it’s on the way, you’ll get tracking and delivery updates by email or text.


Estimated Delivery Timeframes
📦 Continental U.S.: 2–4 business days
📦 Alaska & Hawaii: 5–7 business days
📦 APO/FPO: Slightly longer depending on base


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