What makes these head bolts stronger than stock?

These S&S Cycle head bolts are made from heat-treated 8640 steel and have an ultimate tensile strength of 200,000 psi, which is a 14% increase over stock bolts. This stronger material helps ensure reliable performance under engine stress.

Are these bolts reusable?

Yes, these head bolts are designed to be reusable. This can be a helpful feature if you anticipate needing to remove the cylinder heads again for future maintenance or adjustments.

What is the advantage of the 12-point head with an integral washer?

The 9/16 inch, 12-point head makes installation easier with a common socket size. The integral washer helps to distribute the clamping force more evenly across the cylinder head surface, which is important for a good seal.

FEATURED BRAND = COVERKING CHECK OUT COVERKING NOW →

Questions? Call Us:631-982-0042

M-F 8AM-4PM ET

Trusted Since 1957

Est. 1957

1 / 2

Specifications

Brand: S&S Cycle
Part #: 900-1006
UPC: 900-1006

S&S Cycle 2017 M8 Models Head Bolt Kit

Name: S&S Cycle 2017 M8 Models Head Bolt Kit
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-2017-m8-models-head-bolt-kit-t14-662066
Price: 227.32 USD
Availability: BackOrder

$227.32

On Backorder — Expected to ship by May 7, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

S&S Cycle M8 Head Bolt Kit for 2017+ Harley-Davidson models. Stronger than stock for reliable engine performance.

Key Features

Fits 2017 and newer Harley-Davidson M8 models.
Constructed from heat-treated 8640 steel for improved strength.
Offers a 14% increase in strength over stock head bolts.
Features 200,000 psi ultimate tensile strength.
Includes 9/16 inch, 12-point heads with integral washers for even clamping.
Durable black oxide coating resists corrosion.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

About this part

Product Details

Built from heat-treated 8640 steel, this head bolt kit from S&S Cycle offers a 14% increase in strength over stock bolts, with an ultimate tensile strength of 200,000 psi. This makes them a solid option when you're rebuilding the top end of your 2017 and newer Harley-Davidson M8 engine. The bolts feature a 9/16 inch, 12-point head with an integral washer, which helps distribute clamping force evenly and simplifies installation with a common socket size.

The cold-formed head and formed threads contribute to the overall durability and reliability of these bolts. They also come with a durable black oxide coating for added protection and are designed to be reusable, which can be a practical consideration for future maintenance. This kit is designed to fit a range of Harley-Davidson models, including the Road King, Street Glide, and Fat Boy, ensuring a proper fit for your specific machine.