Engines and Components› Pistons and Piston Rings

S&S Cycle

S&S Cycle 2017+ M8 Models 4.250in Bore 4.840in Big Bore Cylinder Set - Black Granite w/ Highlight

$977.95

SKU: S0GE 910-0739

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Special Order
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Non-Returnable Item
INSTALL DIFFICULTY
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Advanced — 4+ hours

Description

The S&S Cycle Big Bore Cylinder Set 910-0739 is designed for Harley-Davidson M8 models, increasing 88" engines to 100" and 96"/103" engines to 110". This bolt-on kit features a 4.250" bore and comes in a black granite finish with highlighted fins. It includes cylinders, forged pistons, rings, piston pins, clips, and gaskets, allowing for bolt-in installation without machining or crankcase splitting.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandS&S Cycle
Part NumberS0GE 910-0739

Videos

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S&S 128 High Horsepower UPGRADE KIT By Moonshine Horsepower | Shop Talk Episode 59
How to Install: S&S Cycle Winter Power Pack (Part 1) Big Bore Kit

How to Install: S&S Cycle Winter Power Pack (Part 1) Big Bore Kit
How to Install a Big Bore Kit In a Milwaukee Eight Engine | Weekend Wrenching

How to Install a Big Bore Kit In a Milwaukee Eight Engine | Weekend Wrenching
S&S Big Bore Kits and Cylinder Heads for Harley Review at RevZilla.com

S&S Big Bore Kits and Cylinder Heads for Harley Review at RevZilla.com
S&S Cycle Product Spotlight - Power Packages for HD® Twin Cam & M8 Models

S&S Cycle Product Spotlight - Power Packages for HD® Twin Cam & M8 Models
How to Install: S&S Cycle Power Package (Part 2) Cam Chest Kit

How to Install: S&S Cycle Power Package (Part 2) Cam Chest Kit

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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