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Est. 1957
S&S Cycle

S&S Cycle 48-77 BT Breather Gear Kit

$167.95

On Backorder — Expected to ship by May 7, 2026

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S&S Cycle 48-77 BT Breather Gear Kit. Includes standard gear and shims for proper breather gear spacing.

Key Features

  • Fits 1948 - early 1977 Big Twin models.
  • Includes one standard size breather gear.
  • Comes with shims: .100", .110", .120", .130", .140", .150", .160", and .170".
  • Allows for proper setting of breather gear spacing.
  • Designed for cases where the original breather gear hole has not been modified.
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About this part

Product Details

This kit from S&S Cycle gives you a standard size replacement breather gear for your 1948 to early 1977 Big Twin motorcycle. It also includes a full set of shims, ranging from .100" to .170" in .010" increments. These shims are crucial for correctly setting the spacing of the breather gear within the engine case, especially if the original hole has been modified. Getting this spacing right is important for proper engine function.

The standard size gear is designed to fit cases where the original breather gear hole hasn't been altered. By using the included shims, you can fine-tune the gear's position to ensure it meshes correctly and operates smoothly. This attention to detail in the kit helps ensure a solid replacement for your drivetrain.

Specifications

Brand
S&S Cycle
Manufacturer Part #
33-4253
UPC
33-4253

Frequently Asked Questions

S&S Cycle 48-77 BT Breather Gear Kit

$167.95