S&S Cycle M8 Models Premium 55mm CNC Ported Manifold - Black — Fits Harley-Davidson 2017-2025

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About S&S Cycle

S&S Cycle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full S&S Cycle lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

S&S Cycle Premium 55mm CNC Ported Manifold for M8 Models

Elevate your Harley-Davidson's performance with the S&S Cycle Premium 55mm CNC Ported Manifold. Engineered specifically for M8 models, this manifold is designed to optimize airflow and maximize power gains. The precision CNC porting ensures a smooth, unrestricted path for your air-fuel mixture, leading to a noticeable improvement in throttle response and overall engine efficiency.

Key Features:

  • Optimized Airflow: 55mm diameter with CNC porting for maximum flow efficiency.
  • Premium Construction: High-quality materials ensure durability and longevity.
  • Sleek Black Finish: Adds a custom, aggressive look to your M8 engine.
  • Direct Fitment: Designed for a hassle-free installation on a wide range of Harley-Davidson M8 models from 2017 to 2025, including Street Glide, Road Glide, Road King Special, and more.
  • CARB EO Certified: Meets emissions standards (D-355-48), ensuring legal compliance in California and other CARB-restricted states.

Whether you're building a high-performance custom or simply looking to get the most out of your stock M8 engine, this S&S Cycle manifold is an essential upgrade. Experience the difference that precision engineering and quality craftsmanship can make. Improve your bike's breathing and unleash its full potential.

This manifold is a perfect complement to other performance upgrades, ensuring your engine receives the optimal air supply it needs to perform at its peak. Invest in the best for your Harley-Davidson M8. Get the S&S Cycle Premium 55mm CNC Ported Manifold today from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2018-2020 Harley-Davidson FLDE Deluxe 107 Base
2018-2019 Harley-Davidson FLFB Fat Boy 107 Base
2018-2023 Harley-Davidson FLFBS Fat Boy 114 Base
2021 Harley-Davidson FLH Electra Glide Revival Base
2018-2021 Harley-Davidson FLHC Heritage Classic 107 Base
2018-2024 Harley-Davidson FLHCS Heritage Classic 114 Base
2023 Harley-Davidson FLHFB Electra Glide Highway King Base
2017-2022 Harley-Davidson FLHR Road King Base
2017-2025 Harley-Davidson FLHRXS Road King Special Base
2019-2022 Harley-Davidson FLHT Electra Glide Standard Base
2017-2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2017-2024 Harley-Davidson FLHTCUTG Tri Glide Ultra Base
2022 Harley-Davidson FLHTCUTG Tri Glide Ultra G.I. Base
2020-2022 Harley-Davidson FLHTCUTGSE CVO Tri Glide Base
2017-2021 Harley-Davidson FLHTKSE CVO Limited Base
2017-2023 Harley-Davidson FLHX Street Glide Base
2017-2023 Harley-Davidson FLHXS Street Glide Special Base
2017-2022 Harley-Davidson FLHXSE CVO Street Glide Base
2022-2023 Harley-Davidson FLHXST Street Glide ST Base
2024 Harley-Davidson FLI Hydra-Glide Revival Base
2017-2025 Harley-Davidson FLRT Freewheeler Base
2018-2021 Harley-Davidson FLSB Sport Glide 107 Base
2018-2021 Harley-Davidson FLSL Softail Slim 107 Base
2020-2024 Harley-Davidson FLTRK Road Glide Limited Base
2022 Harley-Davidson FLTRKSE CVO Road Glide Limited Base
2024 Harley-Davidson FLTRT Road Glide 3 Base
2017-2019 Harley-Davidson FLTRU Road Glide Ultra Base
2017-2023 Harley-Davidson FLTRX Road Glide Base
2017-2023 Harley-Davidson FLTRXS Road Glide Special Base
2018-2022 Harley-Davidson FLTRXSE CVO Road Glide Base
2022-2023 Harley-Davidson FLTRXST Road Glide ST Base
2018-2020 Harley-Davidson FXBB Street Bob 107 Base
2021-2024 Harley-Davidson FXBBS Street Bob 114 Base
2018-2019 Harley-Davidson FXBR Breakout 107 Base
2023-2024 Harley-Davidson FXBR Breakout 117 Base
2018-2020 Harley-Davidson FXBRS Breakout 114 Base
2019-2020 Harley-Davidson FXDRS FXDR 114 Base
2018-2019 Harley-Davidson FXFB Fat Bob 107 Base
2018-2023 Harley-Davidson FXFBS Fat Bob 114 Base
2018-2019 Harley-Davidson FXLR Low Rider 107 Base
2020-2021 Harley-Davidson FXLRS Low Rider S 114 Base
2022-2024 Harley-Davidson FXLRS Low Rider S 117 Base
2022-2024 Harley-Davidson FXLRST Low Rider ST 117 Base
2022 Harley-Davidson FXRST Low Rider El Diablo 117 Base
2020-2024 Harley-Davidson FXST Softail Standard 107 Base

Product Details

Product Description
Part Numbers
Sizing & Fit

About S&S Cycle

S&S Cycle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full S&S Cycle lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

S&S Cycle Premium 55mm CNC Ported Manifold for M8 Models

Elevate your Harley-Davidson's performance with the S&S Cycle Premium 55mm CNC Ported Manifold. Engineered specifically for M8 models, this manifold is designed to optimize airflow and maximize power gains. The precision CNC porting ensures a smooth, unrestricted path for your air-fuel mixture, leading to a noticeable improvement in throttle response and overall engine efficiency.

Key Features:

  • Optimized Airflow: 55mm diameter with CNC porting for maximum flow efficiency.
  • Premium Construction: High-quality materials ensure durability and longevity.
  • Sleek Black Finish: Adds a custom, aggressive look to your M8 engine.
  • Direct Fitment: Designed for a hassle-free installation on a wide range of Harley-Davidson M8 models from 2017 to 2025, including Street Glide, Road Glide, Road King Special, and more.
  • CARB EO Certified: Meets emissions standards (D-355-48), ensuring legal compliance in California and other CARB-restricted states.

Whether you're building a high-performance custom or simply looking to get the most out of your stock M8 engine, this S&S Cycle manifold is an essential upgrade. Experience the difference that precision engineering and quality craftsmanship can make. Improve your bike's breathing and unleash its full potential.

This manifold is a perfect complement to other performance upgrades, ensuring your engine receives the optimal air supply it needs to perform at its peak. Invest in the best for your Harley-Davidson M8. Get the S&S Cycle Premium 55mm CNC Ported Manifold today from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2018-2020 Harley-Davidson FLDE Deluxe 107 Base
2018-2019 Harley-Davidson FLFB Fat Boy 107 Base
2018-2023 Harley-Davidson FLFBS Fat Boy 114 Base
2021 Harley-Davidson FLH Electra Glide Revival Base
2018-2021 Harley-Davidson FLHC Heritage Classic 107 Base
2018-2024 Harley-Davidson FLHCS Heritage Classic 114 Base
2023 Harley-Davidson FLHFB Electra Glide Highway King Base
2017-2022 Harley-Davidson FLHR Road King Base
2017-2025 Harley-Davidson FLHRXS Road King Special Base
2019-2022 Harley-Davidson FLHT Electra Glide Standard Base
2017-2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2017-2024 Harley-Davidson FLHTCUTG Tri Glide Ultra Base
2022 Harley-Davidson FLHTCUTG Tri Glide Ultra G.I. Base
2020-2022 Harley-Davidson FLHTCUTGSE CVO Tri Glide Base
2017-2021 Harley-Davidson FLHTKSE CVO Limited Base
2017-2023 Harley-Davidson FLHX Street Glide Base
2017-2023 Harley-Davidson FLHXS Street Glide Special Base
2017-2022 Harley-Davidson FLHXSE CVO Street Glide Base
2022-2023 Harley-Davidson FLHXST Street Glide ST Base
2024 Harley-Davidson FLI Hydra-Glide Revival Base
2017-2025 Harley-Davidson FLRT Freewheeler Base
2018-2021 Harley-Davidson FLSB Sport Glide 107 Base
2018-2021 Harley-Davidson FLSL Softail Slim 107 Base
2020-2024 Harley-Davidson FLTRK Road Glide Limited Base
2022 Harley-Davidson FLTRKSE CVO Road Glide Limited Base
2024 Harley-Davidson FLTRT Road Glide 3 Base
2017-2019 Harley-Davidson FLTRU Road Glide Ultra Base
2017-2023 Harley-Davidson FLTRX Road Glide Base
2017-2023 Harley-Davidson FLTRXS Road Glide Special Base
2018-2022 Harley-Davidson FLTRXSE CVO Road Glide Base
2022-2023 Harley-Davidson FLTRXST Road Glide ST Base
2018-2020 Harley-Davidson FXBB Street Bob 107 Base
2021-2024 Harley-Davidson FXBBS Street Bob 114 Base
2018-2019 Harley-Davidson FXBR Breakout 107 Base
2023-2024 Harley-Davidson FXBR Breakout 117 Base
2018-2020 Harley-Davidson FXBRS Breakout 114 Base
2019-2020 Harley-Davidson FXDRS FXDR 114 Base
2018-2019 Harley-Davidson FXFB Fat Bob 107 Base
2018-2023 Harley-Davidson FXFBS Fat Bob 114 Base
2018-2019 Harley-Davidson FXLR Low Rider 107 Base
2020-2021 Harley-Davidson FXLRS Low Rider S 114 Base
2022-2024 Harley-Davidson FXLRS Low Rider S 117 Base
2022-2024 Harley-Davidson FXLRST Low Rider ST 117 Base
2022 Harley-Davidson FXRST Low Rider El Diablo 117 Base
2020-2024 Harley-Davidson FXST Softail Standard 107 Base

Product Details

Product Description

About S&S Cycle

S&S Cycle engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full S&S Cycle lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

S&S Cycle Premium 55mm CNC Ported Manifold for M8 Models

Elevate your Harley-Davidson's performance with the S&S Cycle Premium 55mm CNC Ported Manifold. Engineered specifically for M8 models, this manifold is designed to optimize airflow and maximize power gains. The precision CNC porting ensures a smooth, unrestricted path for your air-fuel mixture, leading to a noticeable improvement in throttle response and overall engine efficiency.

Key Features:

  • Optimized Airflow: 55mm diameter with CNC porting for maximum flow efficiency.
  • Premium Construction: High-quality materials ensure durability and longevity.
  • Sleek Black Finish: Adds a custom, aggressive look to your M8 engine.
  • Direct Fitment: Designed for a hassle-free installation on a wide range of Harley-Davidson M8 models from 2017 to 2025, including Street Glide, Road Glide, Road King Special, and more.
  • CARB EO Certified: Meets emissions standards (D-355-48), ensuring legal compliance in California and other CARB-restricted states.

Whether you're building a high-performance custom or simply looking to get the most out of your stock M8 engine, this S&S Cycle manifold is an essential upgrade. Experience the difference that precision engineering and quality craftsmanship can make. Improve your bike's breathing and unleash its full potential.

This manifold is a perfect complement to other performance upgrades, ensuring your engine receives the optimal air supply it needs to perform at its peak. Invest in the best for your Harley-Davidson M8. Get the S&S Cycle Premium 55mm CNC Ported Manifold today from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2018-2020 Harley-Davidson FLDE Deluxe 107 Base
2018-2019 Harley-Davidson FLFB Fat Boy 107 Base
2018-2023 Harley-Davidson FLFBS Fat Boy 114 Base
2021 Harley-Davidson FLH Electra Glide Revival Base
2018-2021 Harley-Davidson FLHC Heritage Classic 107 Base
2018-2024 Harley-Davidson FLHCS Heritage Classic 114 Base
2023 Harley-Davidson FLHFB Electra Glide Highway King Base
2017-2022 Harley-Davidson FLHR Road King Base
2017-2025 Harley-Davidson FLHRXS Road King Special Base
2019-2022 Harley-Davidson FLHT Electra Glide Standard Base
2017-2019 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2017-2024 Harley-Davidson FLHTCUTG Tri Glide Ultra Base
2022 Harley-Davidson FLHTCUTG Tri Glide Ultra G.I. Base
2020-2022 Harley-Davidson FLHTCUTGSE CVO Tri Glide Base
2017-2021 Harley-Davidson FLHTKSE CVO Limited Base
2017-2023 Harley-Davidson FLHX Street Glide Base
2017-2023 Harley-Davidson FLHXS Street Glide Special Base
2017-2022 Harley-Davidson FLHXSE CVO Street Glide Base
2022-2023 Harley-Davidson FLHXST Street Glide ST Base
2024 Harley-Davidson FLI Hydra-Glide Revival Base
2017-2025 Harley-Davidson FLRT Freewheeler Base
2018-2021 Harley-Davidson FLSB Sport Glide 107 Base
2018-2021 Harley-Davidson FLSL Softail Slim 107 Base
2020-2024 Harley-Davidson FLTRK Road Glide Limited Base
2022 Harley-Davidson FLTRKSE CVO Road Glide Limited Base
2024 Harley-Davidson FLTRT Road Glide 3 Base
2017-2019 Harley-Davidson FLTRU Road Glide Ultra Base
2017-2023 Harley-Davidson FLTRX Road Glide Base
2017-2023 Harley-Davidson FLTRXS Road Glide Special Base
2018-2022 Harley-Davidson FLTRXSE CVO Road Glide Base
2022-2023 Harley-Davidson FLTRXST Road Glide ST Base
2018-2020 Harley-Davidson FXBB Street Bob 107 Base
2021-2024 Harley-Davidson FXBBS Street Bob 114 Base
2018-2019 Harley-Davidson FXBR Breakout 107 Base
2023-2024 Harley-Davidson FXBR Breakout 117 Base
2018-2020 Harley-Davidson FXBRS Breakout 114 Base
2019-2020 Harley-Davidson FXDRS FXDR 114 Base
2018-2019 Harley-Davidson FXFB Fat Bob 107 Base
2018-2023 Harley-Davidson FXFBS Fat Bob 114 Base
2018-2019 Harley-Davidson FXLR Low Rider 107 Base
2020-2021 Harley-Davidson FXLRS Low Rider S 114 Base
2022-2024 Harley-Davidson FXLRS Low Rider S 117 Base
2022-2024 Harley-Davidson FXLRST Low Rider ST 117 Base
2022 Harley-Davidson FXRST Low Rider El Diablo 117 Base
2020-2024 Harley-Davidson FXST Softail Standard 107 Base

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