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

$1,061.06
$1,178.95
Save $117.89 10%
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Blemished/Refurbished

This item is available as a Blem/Refurb. These are items that cannot be sold as "New" merchandise and are limited to stock on hand. See the product details for a description of the product's condition.

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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
  • Made in the USA
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Please review this product's fitment notes & exceptions prior to purchase: Add to Cart

This product is vehicle specific. Click here to select your vehicle to ensure fitment.

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 Style Item # Store SKU Manufacturer Product # Availability
Product Style Black Granite w/ Highlighted Fins Item # 10085836 Store SKU Manufacturer Product # 910-0733 Availability In Stock: Ships within 24 hours
Product Style Black w/ Highlighted Fins Item # 1591335 Store SKU Manufacturer Product # 910-0684 Availability In Stock: Ships within 24 hours
Product Style Black w/ No Highlight Item # 1591334 Store SKU Manufacturer Product # 910-0685 Availability Available: Ships in 3-5 business days
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