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S&S Cycle 2017+ M8 Models 129in Big-Bore Kit 4.375in Stroke Highlighted Cylinders

S&S Cycle Part number: 910-0843A Out of Stock - on backorder and will be dispatched once in stock.

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$1,643.95

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Availability: Out of Stock - on backorder and will be dispatched once in stock.

Part number: 910-0843A

Manufacturer: S&S Cycle

S&S Cycle 2017+ M8 Models 129in Big-Bore Kit 4.375in Stroke Highlighted Cylinders

Special order — availability will be confirmed after purchase.

The biggest Big Bore possible with a slip in kit! These S&S cylinder and piston kits takes your 107" M8 to 129" and the 114" to 132"

S&S Cycle 2017+ M8 Models 129in Big-Bore Kit 4.375in Stroke Highlighted Cylinders

Works with stock crankcases (no machine work)

Huge bore increase means huge power increase

Powder coat finish matches factory finish

MLS (multi-layered steel) head gaskets

Includes Cubic Inch Cam Cover Badge

Retains stock engine height

4.320" Bore

Made in USA

No vehicle listing found We do not have a vehicle-specific fitment row for this product yet.

This does not automatically mean the part is universal. Send us your year, make, model, trim, and the part number before ordering.

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