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S&S Cycle

S&S Cycle 2017+ M8 Models 4.250in Bore 4.500in Stroke Cylinder Kit - Wrinkle Black w/o Highlight

$1,561.95 $1,293.80 Save $268.15

SKU: S0GE 910-0685

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In Stock
Ships by Aug 4
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 910-0685

114 to 128" big bore kit

114" to 128" Kit, Without Fin Highlight, Bore: 4.250, Stroke: 4.5, Black

MIA's Description

Big bore kit for Harley-Davidson M8 114 models, increasing displacement to 128". Features a wrinkle black finish with non-highlighted fins. It's a bolt-on kit, requiring no machining, and includes all necessary gaskets and hardware for installation. Comes with forged pistons and an 11:1 compression ratio.

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.

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Specifications

BrandS&S Cycle
Part NumberS0GE 910-0685

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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