What is the main advantage of using S&S MK-Series crankcases over stock?

The S&S MK-Series crankcases are built to handle the increased demands of higher performance engines. They allow for larger bore sizes and feature improved oil scraping for better reliability and oil management compared to stock cases.

Will these crankcases fit my stock M8 touring frame?

Yes, these crankcases are specifically designed to fit within the stock touring frame of 2017 and later M8 models. This allows for a more direct upgrade path without requiring extensive chassis modifications.

What is the finish on these crankcases?

These S&S Cycle MK-Series Touring Crankcase Assemblies come in a black finish. This provides a clean, custom look that can complement other engine components and the overall appearance of your motorcycle.

Specifications

Brand: S&S Cycle
Part #: 310-1170
UPC: 310-1170

S&S Cycle 2017+ M8 Touring Models MK-Series Touring Crankcase Assembly - Black

Name: S&S Cycle 2017+ M8 Touring Models MK-Series Touring Crankcase Assembly - Black
Brand: S&S Cycle
SKU: s-s-cycle-s-s-cycle-2017-m8-touring-models-mk-series-touring-crankcase-assembly--t14-666660
Price: 2526.26 USD
Availability: BackOrder

$2526.26

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 2017+ M8 Touring Models MK-Series Touring Crankcase Assembly - Black. Built for higher performance and reliability.

Key Features

Fits 2017 and later M8 Touring models.
Designed to allow for larger bore sizes for increased displacement.
Features improved oil scraping for better oil management.
Built to provide more reliability for high-performance engines.
Designed to fit within the stock touring frame.
Features a black finish for a custom appearance.

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About this part

Product Details

If you're pushing your 2017 and later M8 Touring model to make more power, you'll eventually need a stronger foundation than the stock crankcases can offer. The S&S Cycle MK-Series Touring Crankcase Assembly is built to handle the increased demands of a high-performance engine, providing a more reliable base for your build.

These crankcases are designed with performance in mind, allowing for larger bore sizes to increase displacement and generate more horsepower. They also feature improved oil scraping to help manage oil more effectively, contributing to overall engine reliability under stress. A key benefit is that they are designed to fit within the stock touring frame, making the transition from your original cases more straightforward. This means you can upgrade your engine's core strength without major chassis modifications.

The black finish offers a clean, custom look that complements the performance upgrades. When building a powerful M8 bagger, starting with a well-built crankcase assembly like this one from S&S Cycle is a smart move to ensure your engine can handle the power you're aiming for.