# S&S Cycle 99-06 BT 4-5/8in Stroke Flywheel Assembly w/o Sprocket Shaft Bearing

This 4-5/8" stroke 8-1/2" diameter flywheel assembly fits 1999-'06 HD® big twin engines (except Dyna models) and S&S® T124 engines. May be used to replace the flywheel assembly in an S&S® 124" Hot Set Up Kit®. Sprocket shaft does not have a stock style bearing race pressed on. This three piece design flywheel assembly is for crankcases with Timken® sprocket shaft bearing. Assembly is trued to less than .0005" runout on pinion and sprocket shaft bearing surfaces, making them capable of higher rpm and fully compatible with gear drive cams.

-   Flywheels are CNC machined from heat-treated, closed die, steel forgings, which are 114 percent stronger than late style stock steel flywheels
-   Fully assembled with premium quaility S&S® heavy duty 7.667" connecting rods, with full width wrist pin ends, and dynamically balanced
-   The only joints in the assembly are where the 1.671" diameter connecting rod crankpin is pressed into the flywheels
-   Pinion and sprocket shafts are forged as part of the flywheel

This Part Fits:

Year

Make

Model

Submodel

1999-2006

Harley-Davidson

FLHR Road King

Base

1999-2006

Harley-Davidson

FLHRCI Road King Classic

Base

2000-2006

Harley-Davidson

FLHRI Road King

Base

1999-2005

Harley-Davidson

FLHTC Electra Glide Classic

Base

1999-2006

Harley-Davidson

FLHTCI Electra Glide Classic

Base

1999-2006

Harley-Davidson

FLHTCUI Electra Glide Ultra Classic

Base

2006

Harley-Davidson

FLST Heritage Softail

Base

1999-2006

Harley-Davidson

FLSTC Heritage Softail Classic

Base

1999-2006

Harley-Davidson

FLSTF Fat Boy

Base

1999-2006

Harley-Davidson

FLTR Road Glide

Base

1999-2006

Harley-Davidson

FLTRI Road Glide

Base

1999

Harley-Davidson

FXR2

Base

1999

Harley-Davidson

FXR3

Base

2000

Harley-Davidson

FXR4

Base

1999-2006

Harley-Davidson

FXSTB Night Train

Base

1999

Harley-Davidson

FXSTC Softail Custom

Base

2000-2006

Harley-Davidson

FXSTD Softail Deuce

Base

2003-2004

Harley-Davidson

FXSTDSE Screamin Eagle Softail Deuce

Base

1999-2006

Harley-Davidson

FXSTS Springer Softail

Base

## Details

- **Price:** 2429.88 CAD
- **Vendor:** S&S Cycle
- **Type:** Flywheels

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2429.88 CAD | In stock |

## Images

- Photo - Primary
- User 1

---

> Source: [Standard Auto Part](https://www.standardautopart.com/products/s-s-cycle-99-06-bt-4-5-8in-stroke-flywheel-assembly-w-o-sprocket-shaft-bearing)
> Updated: 2026-07-13