# S&S Cycle 2007+ BT B-Style 4-3/8in Stroke Flywheel Assembly w/ Sprocket Shaft - 1035 TPW

This 4-3/8" stroke 8-1/2" diameter flywheel assembly replaces the original flywheels 2007-'16 HD® big twin engines, when using performance or big bore pistons. Wrist pin ends of connecting rods are full width (not tapered). Sprocket shaft has a stock style bearing race pressed on.

-   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 7.659" 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
-   This flywheel assembly is for crankcases with stock roller style sprocket shaft bearing
-   Pinion and sprocket shafts are forged as part of the flywheel
-   Pinion shaft has sprocket to drive balancer chain
-   Flywheel assembly is three piece design

This Part Fits:

Year

Make

Model

Submodel

2015-2017

Harley-Davidson

FLHTKSE CVO Limited

Base

2015-2017

Harley-Davidson

FLHXSE CVO Street Glide

Base

2012-2017

Harley-Davidson

FLS Softail Slim

Base

2016-2017

Harley-Davidson

FLSS Softail Slim S

Base

2007-2017

Harley-Davidson

FLSTC Heritage Softail Classic

Base

2007-2017

Harley-Davidson

FLSTF Fat Boy

Base

2010-2016

Harley-Davidson

FLSTFB Fat Boy Lo

Base

2016-2017

Harley-Davidson

FLSTFBS Fat Boy S

Base

2007-2014,2017

Harley-Davidson

FLSTN Softail Deluxe

Base

2014-2015

Harley-Davidson

FLSTNSE CVO Softail Deluxe

Base

2008-2011

Harley-Davidson

FLSTSB Cross Bones

Base

2015-2016

Harley-Davidson

FLTRUSE CVO Road Glide Ultra

Base

2008-2009

Harley-Davidson

FXCW Rocker

Base

2008-2011

Harley-Davidson

FXCWC Rocker C

Base

2011-2013

Harley-Davidson

FXS Blackline

Base

2014-2017

Harley-Davidson

FXSB Breakout

Base

2013

Harley-Davidson

FXSBSE CVO Breakout

Base

2016-2017

Harley-Davidson

FXSE CVO Pro Street Breakout

Base

2007

Harley-Davidson

FXST Softail Standard

Base

2007-2009

Harley-Davidson

FXSTB Night Train

Base

2008,2010

Harley-Davidson

FXSTC Softail Custom

Base

2007

Harley-Davidson

FXSTD Softail Deuce

Base

2009

Harley-Davidson

FXSTSSE3 CVO Softail Springer

Base

## Details

- **Price:** 2571.61 CAD
- **Vendor:** S&S Cycle
- **Type:** Flywheels

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2571.61 CAD | In stock |

## Images

- User 1

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/s-s-cycle-2007-bt-b-style-4-3-8in-stroke-flywheel-assembly-w-sprocket-shaft-1035-tpw)
> Updated: 2026-07-13