What makes these studs stronger than stock?

These S&S Cycle studs are made from 4140 Chrome Moly steel and heat-treated to 39-44 HRc, giving them a tensile strength of 180,000psi. They also feature rounded thread roots, which improve fatigue strength compared to standard flat-root threads.

What does the 'positive stop shoulder' do?

The positive stop shoulder is a design feature that allows for a consistent installed height for each stud. This helps ensure uniformity during your engine build, which is important for proper sealing and performance.

What is the benefit of rounded thread roots?

Rounded thread roots are a design improvement that helps to increase the fatigue strength of the stud. This means the stud is better able to withstand repeated stress cycles, which is beneficial in high-performance engine applications where heat and torque are increased.

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Specifications

Brand: S&S Cycle
Part #: 900-1176
UPC: 900-1176

S&S Cycle 2017 M8 Models Cylinder Stud & Head Bolt Kit - 8 Pack

Name: S&S Cycle 2017 M8 Models Cylinder Stud & Head Bolt Kit - 8 Pack
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-2017-m8-models-cylinder-stud-head-bolt-kit-8-pack-t14-662067
Price: 252.58 USD
Availability: BackOrder

$252.58

On Backorder — Expected to ship by May 23, 2026

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

Key Features

Fits 2017 M8 models.
Made from 4140 Chrome Moly steel.
Heat-treated to 39-44 HRc for improved durability.
Rounded thread roots enhance fatigue strength.
Positive stop shoulder ensures consistent installed height.
180,000psi tensile strength.

This kit is specifically designed for 2017 M8 models. Please verify compatibility with your specific motorcycle before purchase.

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About this part

Product Details

S&S Cycle is well-known for making parts that help riders push their motorcycles further, and this Cylinder Stud and Head Bolt Kit is no exception. If you're working on a 2017 M8 model and planning a high-performance build, these studs are designed to be a strong upgrade over stock components.

These aren't your average bolts. They're made from 4140 Chrome Moly steel, heat-treated to a 39-44 HRc hardness, and have a tensile strength of 180,000psi. The rounded thread roots are a notable detail; they help improve fatigue strength compared to flat roots, which is important when you're dealing with the extra heat and torque from a performance engine. Plus, the positive stop shoulder means you can get a consistent installed height every time, making your build more predictable.

This kit includes 8 pieces, giving you what you need for your M8 engine. When you're building an engine that needs to handle more power, using strong, well-built fasteners like these is key to ensuring reliability.