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S&S 124" Big Bore Kit For Harley 107" 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 124" Big Bore Kit For Harley 107" Milwaukee Eight

Upgrade your 107" 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 107" M8 motors without required machining of the crankcases
  • 4.250" bore, 4.375" 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
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This product is vehicle specific. Click here to select your vehicle to ensure fitment.

Fitment Notes & Exceptions
  • Fits models with 107" Milwaukee Eight motor only

This Product Fits:


Harley Davidson
Electra Glide Standard FLHT 2019, 2020, 2021
Electra Glide Ultra Classic FLHTCU/I 2017, 2018, 2019
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Road Glide Limited FLTRK 2020, 2021
Road Glide Special FLTRXS 2017, 2018, 2019, 2020, 2021
Road Glide Ultra FLTRU 2017, 2018, 2019
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Road King Special FLHRXS 2017, 2018, 2019, 2020, 2021
Softail Breakout FXBR 2018, 2019
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Softail Fat Bob FXFB 2018, 2019
Softail Fat Boy FLFB 2018, 2019
Softail Heritage Classic FLHC 2018, 2019, 2020, 2021
Softail Low Rider FXLR 2018, 2019, 2020
Softail Slim FLSL 2018, 2019, 2020, 2021
Softail Sport Glide FLSB 2018, 2019, 2020, 2021
Softail Standard FXST 2020, 2021
Softail Street Bob FXBB 2018, 2019, 2020
Softail Street Bob FXBBS 2021
Street Glide FLHX/I 2017, 2018, 2019, 2020, 2021
Street Glide Special FLHXS 2017, 2018, 2019, 2020, 2021
Product Style Item # Store SKU Manufacturer Product # Availability
Product Style Non-Highlighted Fins Item # 1591350 Store SKU Manufacturer Product # 910-0681 Availability In Stock: Ships within 24 hours
Product Style Highlighted Fins Item # 1591351 Store SKU Manufacturer Product # 910-0625 Availability In Stock: Ships within 24 hours
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