# S&S Cycle 84-99 BT 89in Stock Bore Stroker Kit

S&S 89" stock bore stroker kit upgrades carbureted 80" HD 80 Evolution Big Twin engines to 89" displacement at approximately 9.25:1 compression

-   This kit requires special pistons which must be ordered separately depending on the oversize required for the stock cylinders
-   Includes a dynamically balanced 4-5/8" stroke flywheel assembly complete with S&S heavy duty connecting rods and mainshafts
-   Pistons are available for stock or S&S Performance Replacement cylinder heads or for S&S Super Stock cylinder heads
-   Stock bore stroker kits reuse the stock cylinders, saving cost and retaining appearance of the engine
-   Minor crankcase and cylinder modifications are required, that can easily be done with hand tools

This Part Fits:

Year

Make

Model

Submodel

1997-1999

Harley-Davidson

FLHR Road King

Base

1998-1999

Harley-Davidson

FLHRCI Road King Classic

Base

1996-1997

Harley-Davidson

FLHRI Road King

Base

1984,1987-1993

Harley-Davidson

FLHS Electra Glide Sport

Base

1984-1999

Harley-Davidson

FLHTC Electra Glide Classic

Base

1996-1999

Harley-Davidson

FLHTCI Electra Glide Classic

Base

1989-1997

Harley-Davidson

FLHTCU Electra Glide Ultra Classic

Base

1995-1999

Harley-Davidson

FLHTCUI Electra Glide Ultra Classic

Base

1986-1990

Harley-Davidson

FLST Heritage Softail

Base

1988-1999

Harley-Davidson

FLSTC Heritage Softail Classic

Base

1990-1999

Harley-Davidson

FLSTF Fat Boy

Base

1993

Harley-Davidson

FLSTN Heritage Softail Nostalgia

Base

1994-1996

Harley-Davidson

FLSTN Heritage Softail Special

Base

1995-1999

Harley-Davidson

FXD Dyna Super Glide

Base

1993-1999

Harley-Davidson

FXDL Dyna Low Rider

Base

1993-1999

Harley-Davidson

FXDWG Dyna Wide Glide

Base

1999

Harley-Davidson

FXDX Dyna Super Glide Sport

Base

1999

Harley-Davidson

FXR2

Base

1999

Harley-Davidson

FXR3

Base

1984-1992

Harley-Davidson

FXRS Low Glide

Base

1986-1993

Harley-Davidson

FXRS-SP Low Rider Sport

Base

1984-1992

Harley-Davidson

FXRT Sport Glide

Base

1984-1999

Harley-Davidson

FXST Softail Standard

Base

1999

Harley-Davidson

FXSTB Night Train

Base

1986-1999

Harley-Davidson

FXSTC Softail Custom

Base

1995-1997

Harley-Davidson

FXSTSB Bad Boy

Base

## Details

- **Price:** 2287.28 CAD
- **Vendor:** S&S Cycle
- **Type:** Stroker Kits

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2287.28 CAD | In stock |

## Images

- Photo - Primary

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/s-s-cycle-84-99-bt-89in-stock-bore-stroker-kit)
> Updated: 2026-07-13