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S&S Cycle

S&S 128" Big Bore Kit For Harley 114" Milwaukee Eight 2017-2021

Item: P672777
1 Read 1 Review 6 Q&As Write a Review

Upgrade your 114" M8 motor to the largest bore size possible, without required machining of your cases. This is as simple as big power gets, with ever… Read More

Non-Highlighted Fins
Fullscreen Zoom
$1,061.06
$1,178.95
Save $117.89 10%
Rebate Available! View Details

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Product Details

This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

S&S 128" Big Bore Kit For Harley 114" Milwaukee Eight

Upgrade your 114" M8 motor to the largest bore size possible, without required machining of your cases. This is as simple as big power gets, with everything necessary for installation included.

Features:

  • Bolt-on kit, the largest cylinder bore possible for 114" M8 motors without required machining of the crankcases
  • 4.250" bore, 4.500" stroke
  • 11:1 forged pistons with rings, pins and clips
  • All gaskets and hardware required for installation included
  • Wrinkle black finish
  • Made in the USA
Made in the USA
Product Style RevZilla Item # MFR. Product # Availability
Product Style Non-Highlighted Fins RevZilla Item #1591334 MFR. Product #910-0685 AvailabilityOut of Stock
Product Style Highlighted Fins RevZilla Item #1591335 MFR. Product #910-0684 AvailabilityAvailable: Requires 3-5 business days of lead time prior to shipment
Please review this product's fitment notes & exceptions prior to purchase:Add to Cart
This product is vehicle specific.
Select a bike to ensure fitment.
Select Your Bike
Fitment Notes & Exceptions
  • Fits models with 114" Milwaukee Eight motor only
This Product Fits
Harley Davidson
Electra Glide Ultra Limited CVO/SE FLHTKSE 2017, 2018, 2019, 2020, 2021
Electra Glide Ultra Limited FLHTK 2020, 2021
Road Glide CVO/SE FLTRXSE 2018, 2019, 2020, 2021
Road Glide Limited FLTRK 2020, 2021
Road Glide Special FLTRXS 2019, 2020, 2021
Road King Special FLHRXS 2020, 2021
Softail Breakout 114 FXBRS 2018, 2019, 2020
Softail Fat Bob 114 FXFBS 2018, 2019, 2020, 2021
Softail Fat Boy 114 FLFBS 2018, 2019, 2020, 2021
Softail FXDR 114 FXDRS 2019, 2020
Softail Heritage Classic 114 FLHCS 2018, 2019, 2020, 2021
Softail Low Rider S FXLRS 2020, 2021
Street Glide CVO/SE FLHXSE 2017, 2018, 2019, 2020, 2021
Street Glide Special FLHXS 2019, 2020, 2021
Product Description
Part Numbers
Fitment
1 Customer Reviews
14/5
6 Questions & 2 Answers

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