# Comp Cams Valve Spring Kit, Harley M8

The M8 Spring and Retainer kit features our Beehive springs for a .530" max lift and increased valvetrain stability. The kit includes our Tool Steel retainers for increased strength and light weight.

-   Lightweight tool steel retainers reduce valvetrain weight while increasing rigidity
-   The Harley M8 spring kit increases maximum valve lift to 0.540".
-   Beehive valve spring design increases valvetrain stability

This Part Fits:

Year

Make

Model

Submodel

2018

Harley-Davidson

FLDE Deluxe 107

Base

2018

Harley-Davidson

FLFB Fat Boy 107

Base

2018

Harley-Davidson

FLFBS Fat Boy 114

Base

2018

Harley-Davidson

FLHC Heritage Classic 107

Base

2018

Harley-Davidson

FLHCS Heritage Classic 114

Base

2017-2018

Harley-Davidson

FLHR Road King

Base

2017-2018

Harley-Davidson

FLHRXS Road King Special

Base

2017-2018

Harley-Davidson

FLHTCU Electra Glide Ultra Classic

Base

2017-2018

Harley-Davidson

FLHTCUTG Tri Glide Ultra

Base

2017-2018

Harley-Davidson

FLHTK Ultra Limited

Base

2017-2018

Harley-Davidson

FLHTKL Ultra Limited Low

Base

2017

Harley-Davidson

FLHTKSE CVO Limited

Base

2017-2018

Harley-Davidson

FLHX Street Glide

Base

2017-2018

Harley-Davidson

FLHXS Street Glide Special

Base

2017

Harley-Davidson

FLHXSE CVO Street Glide

Base

2017-2018

Harley-Davidson

FLRT Freewheeler

Base

2018

Harley-Davidson

FLSB Sport Glide 107

Base

2018

Harley-Davidson

FLSL Softail Slim 107

Base

2017-2018

Harley-Davidson

FLTRU Road Glide Ultra

Base

2017-2018

Harley-Davidson

FLTRX Road Glide

Base

2017-2018

Harley-Davidson

FLTRXS Road Glide Special

Base

2018

Harley-Davidson

FXBB Street Bob 107

Base

2018

Harley-Davidson

FXBR Breakout 107

Base

2018

Harley-Davidson

FXBRS Breakout 114

Base

2018

Harley-Davidson

FXFB Fat Bob 107

Base

2018

Harley-Davidson

FXFBS Fat Bob 114

Base

2018

Harley-Davidson

FXLR Low Rider 107

Base

## Details

- **Price:** 516.77 CAD
- **Vendor:** COMP Cams
- **Type:** Engine Hardware
- **Tags:** ClearanceItem:N, Core:N, CorePrice:0, Engine Components>Engine Hardware, EPA:N/A, fits_2017-2018`Harley-Davidson`FLHR Road King`Base~2017-2018`Harley-Davidson`FLHRXS Road King Special`Base~2017-2018`Harley-Davidson`FLHTCU Electra Glide Ultra Classic`Base~2017-2018`Harley-Davidson`FLHTCUTG Tri Glide Ultra`Base, fits_2017-2018`Harley-Davidson`FLHTK Ultra Limited`Base~2017-2018`Harley-Davidson`FLHTKL Ultra Limited Low`Base~2017`Harley-Davidson`FLHTKSE CVO Limited`Base~2017-2018`Harley-Davidson`FLHX Street Glide`Base, fits_2017-2018`Harley-Davidson`FLHXS Street Glide Special`Base~2017`Harley-Davidson`FLHXSE CVO Street Glide`Base~2017-2018`Harley-Davidson`FLRT Freewheeler`Base~2018`Harley-Davidson`FLSB Sport Glide 107`Base, fits_2018`Harley-Davidson`FLDE Deluxe 107`Base~2018`Harley-Davidson`FLFB Fat Boy 107`Base~2018`Harley-Davidson`FLFBS Fat Boy 114`Base~2018`Harley-Davidson`FLHC Heritage Classic 107`Base~2018`Harley-Davidson`FLHCS Heritage Classic 114`Base, fits_2018`Harley-Davidson`FLSL Softail Slim 107`Base~2017-2018`Harley-Davidson`FLTRU Road Glide Ultra`Base~2017-2018`Harley-Davidson`FLTRX Road Glide`Base~2017-2018`Harley-Davidson`FLTRXS Road Glide Special`Base, fits_2018`Harley-Davidson`FXBB Street Bob 107`Base~2018`Harley-Davidson`FXBR Breakout 107`Base~2018`Harley-Davidson`FXBRS Breakout 114`Base~2018`Harley-Davidson`FXFB Fat Bob 107`Base~2018`Harley-Davidson`FXFBS Fat Bob 114`Base, fits_2018`Harley-Davidson`FXLR Low Rider 107`Base, LTL:N, MPN:9715-KIT, Non-CARB:N, Prop65:Y, SpecialOrder:Y, TURN14_ID:1031620

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 516.77 CAD | In stock |

## Images

- Photo - Primary
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/comp-cams-valve-spring-kit-harley-m8)
> Updated: 2026-07-16