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

$1,643.99
$1,643.99
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The biggest Big Bore possible with a slip in kit! The S&S 4.320" bore cylinder kit takes your 107" M8 to 129" and the 114" to 132"

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

$1,643.99

Does it come with a warranty?

Our Used Parts do not come with a warranty but we back each order with a 100% satisfaction guarantee. Have an issue, shoot us a message and we will be happy to help! Email: Karl@skywaycyclesupply.com

What happens if I don't like it or it doesn't fit?

Give us a call or email us immediately to see what's going on! We're here to put our customers first and make sure they get their bikes back on the road.

Phone: (727) 219-1856‬
Email: Karl@skywaycyclesupply.com

How fast is shipping?

We do our best to get your shipment out in 1-2 business days. For transit time it is based on your location and carrier. Learn more about our shipping policies here.

What's the returns policy?

View our complete return policy here for New & Used parts.

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