# S&S Cycle 2017+ M8 Models 1.640 To 1 Ration Forged Roller Rocker Arms

S&S engineers designed stronger, more durable components that will help you get the most out of your M8 and increase the longevity of your valvetrain components.

-   Rocker geometry is better suited to high lift cams and a must have for cams with .550 in. or greater lift
-   Rollers eliminate thrusting on valves for decreased wear on the valve train
-   Designed using Finite Element Analysis (FEA)
-   Forged from 8620 steel for greater strength
-   Capable of .650 in. max Valve Lift
-   1.640 Ratio

This Part Fits:

Year

Make

Model

Submodel

2018-2020

Harley-Davidson

FLDE Deluxe 107

Base

2018-2021

Harley-Davidson

FLFBS Fat Boy 114

Base

2018-2021

Harley-Davidson

FLHCS Heritage Classic 114

Base

2017-2021

Harley-Davidson

FLHR Road King

Base

2017-2021

Harley-Davidson

FLHRXS Road King Special

Base

2019-2021

Harley-Davidson

FLHT Electra Glide Standard

Base

2017-2019

Harley-Davidson

FLHTCU Electra Glide Ultra Classic

Base

2020-2021

Harley-Davidson

FLHTCUTGSE CVO Tri Glide

Base

2017-2021

Harley-Davidson

FLHTK Ultra Limited

Base

2017-2019

Harley-Davidson

FLHTKL Ultra Limited Low

Base

2017-2021

Harley-Davidson

FLHTKSE CVO Limited

Base

2017-2021

Harley-Davidson

FLHX Street Glide

Base

2017-2021

Harley-Davidson

FLHXS Street Glide Special

Base

2017-2021

Harley-Davidson

FLHXSE CVO Street Glide

Base

2017-2021

Harley-Davidson

FLRT Freewheeler

Base

2020-2021

Harley-Davidson

FLTRK Road Glide Limited

Base

2017-2019

Harley-Davidson

FLTRU Road Glide Ultra

Base

2017-2021

Harley-Davidson

FLTRX Road Glide

Base

2017-2021

Harley-Davidson

FLTRXS Road Glide Special

Base

2018-2020

Harley-Davidson

FXBRS Breakout 114

Base

2019-2020

Harley-Davidson

FXDRS FXDR 114

Base

2018-2021

Harley-Davidson

FXFBS Fat Bob 114

Base

2020

Harley-Davidson

FXLRS Low Rider S 114

Base

## Details

- **Price:** 979.32 CAD
- **Vendor:** S&S Cycle
- **Type:** Rocker Arms

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 979.32 CAD | In stock |

## Images

- Photo - Primary
- User 1

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/s-s-cycle-2017-m8-models-1-640-to-1-ration-forged-roller-rocker-arms)
> Updated: 2026-07-13