Comp Cams Valve Spring Kit, Harley M8
Why this price?
$351.95 is MSRP, the lowest price COMP Cams lets us list it at. Additionally, Pro members get 3% to 35% back on most parts.
Special Order
This part is still available to order. Once you place your order, we’ll submit it directly to COMP Cams, and they’ll ship it straight to you.
Delivery times can vary depending on the brand, so we can’t guarantee an exact arrival date. What we can guarantee is that we’ll stay on top of your order, monitor its progress, and keep you updated until it reaches your door.
Special-order items are typically not kept in stock by most retailers. By ordering through us, your order is placed directly with COMP Cams, assuring you get the part as quickly as possible.
Want to get an estimated delivery timeframe before ordering? Contact us through our contact page, and we’ll be happy to find out for you.
Not sure it fits? Read our tips.
Fitment tips
Fitment can come down to more than year, make and model. Sometimes the sub-model decides, so start with the fitment table below.
- Drive type. If your car is all-wheel drive, make sure the part is for all-wheel drive, not rear-wheel drive.
- Engine size. For engine parts, make sure the engine size on the product matches your engine.
- Transmission. Manual and automatic cars often take different parts.
- Body style. Sedan or hatch, two-door or four-door, cab and bed length on trucks.
Manufacturer data can sometimes have imperfections. Still not sure? We are happy to help.
Send us a message and we will confirm the fit.
Couldn't load pickup availability
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.
CatalogUser 1
- 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 |
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