Engines and Components› Crankshafts and Components

S&S Cycle

S&S Cycle 90-99 BT Pinion Shaft Conversion Gear Kit - Black

$185.95

SKU: S0GE 33-4180

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Professional / shop required

Description

The S&S Cycle 33-4180 is a pinion shaft conversion kit designed for 1984-1999 Big Twin models. It serves as a stock replacement for 1977-1989 Big Twin models and as a conversion kit for 1990-1999 Evolution Big Twin models that require a pre-1990 pinion shaft. The kit includes a color-coded pinion gear, an oil pump drive gear, a pinion shaft gear spacer, and a pinion shaft gear nut.

Fitment

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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

BrandS&S Cycle
Part NumberS0GE 33-4180

Videos

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How to Install: S&S Cycle Cam Chest Kit for H-D M8 Models - Part 1

How to Install: S&S Cycle Cam Chest Kit for H-D M8 Models - Part 1
Comparing Cam Plate Oil Systems ( S&S, Feuling, Harley Stock) | Shop Talk Episode 6

Comparing Cam Plate Oil Systems ( S&S, Feuling, Harley Stock) | Shop Talk Episode 6

Buy with Confidence

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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