S&S Cycle 1-7/8in O-Ring Manifold for Harley-Davidson Big Twin 1957-1978

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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.

S&S Cycle 1-7/8in O-Ring Manifold for Big Twin Models

Enhance your motorcycle's performance and sound with this high-quality S&S Cycle O-Ring Manifold. Designed specifically for Harley-Davidson Big Twin models from 1957 to 1978, this manifold ensures a precise fit and optimal airflow for your engine.

Key Features:

  • Durable Construction: Built to withstand the demands of your ride.
  • Optimized Diameter: 1-7/8 inch inner diameter is ideal for a wide range of Big Twin engine configurations.
  • O-Ring Seal: Provides a secure and leak-free connection to your carburetor.
  • Direct Fitment: Engineered for easy installation on 1957-1978 Harley-Davidson Big Twin models, including XLCH, FXS Low Rider, and XLT.
  • Improved Performance: Contributes to better throttle response and overall engine efficiency.

This manifold is a crucial component for riders looking to upgrade their exhaust system or replace a worn-out part. It's designed to work seamlessly with S&S Cycle carburetors and other compatible exhaust components, allowing for a customized setup that meets your performance goals.

Ensure your vintage Harley-Davidson Big Twin is running at its best. Trust S&S Cycle for reliable performance and quality craftsmanship. Find this essential manifold and more at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1977 Harley-Davidson FXS Low Rider Base
1958-1978 Harley-Davidson XLCH Base
1977-1978 Harley-Davidson XLT 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.

S&S Cycle 1-7/8in O-Ring Manifold for Big Twin Models

Enhance your motorcycle's performance and sound with this high-quality S&S Cycle O-Ring Manifold. Designed specifically for Harley-Davidson Big Twin models from 1957 to 1978, this manifold ensures a precise fit and optimal airflow for your engine.

Key Features:

  • Durable Construction: Built to withstand the demands of your ride.
  • Optimized Diameter: 1-7/8 inch inner diameter is ideal for a wide range of Big Twin engine configurations.
  • O-Ring Seal: Provides a secure and leak-free connection to your carburetor.
  • Direct Fitment: Engineered for easy installation on 1957-1978 Harley-Davidson Big Twin models, including XLCH, FXS Low Rider, and XLT.
  • Improved Performance: Contributes to better throttle response and overall engine efficiency.

This manifold is a crucial component for riders looking to upgrade their exhaust system or replace a worn-out part. It's designed to work seamlessly with S&S Cycle carburetors and other compatible exhaust components, allowing for a customized setup that meets your performance goals.

Ensure your vintage Harley-Davidson Big Twin is running at its best. Trust S&S Cycle for reliable performance and quality craftsmanship. Find this essential manifold and more at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1977 Harley-Davidson FXS Low Rider Base
1958-1978 Harley-Davidson XLCH Base
1977-1978 Harley-Davidson XLT 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.

S&S Cycle 1-7/8in O-Ring Manifold for Big Twin Models

Enhance your motorcycle's performance and sound with this high-quality S&S Cycle O-Ring Manifold. Designed specifically for Harley-Davidson Big Twin models from 1957 to 1978, this manifold ensures a precise fit and optimal airflow for your engine.

Key Features:

  • Durable Construction: Built to withstand the demands of your ride.
  • Optimized Diameter: 1-7/8 inch inner diameter is ideal for a wide range of Big Twin engine configurations.
  • O-Ring Seal: Provides a secure and leak-free connection to your carburetor.
  • Direct Fitment: Engineered for easy installation on 1957-1978 Harley-Davidson Big Twin models, including XLCH, FXS Low Rider, and XLT.
  • Improved Performance: Contributes to better throttle response and overall engine efficiency.

This manifold is a crucial component for riders looking to upgrade their exhaust system or replace a worn-out part. It's designed to work seamlessly with S&S Cycle carburetors and other compatible exhaust components, allowing for a customized setup that meets your performance goals.

Ensure your vintage Harley-Davidson Big Twin is running at its best. Trust S&S Cycle for reliable performance and quality craftsmanship. Find this essential manifold and more at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1977 Harley-Davidson FXS Low Rider Base
1958-1978 Harley-Davidson XLCH Base
1977-1978 Harley-Davidson XLT Base

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