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Product Details

S&S Cycle 129" Power Pack For Harley With 107" Milwaukee-Eight 

You know what they say, "there's no replacement for displacement".

In the past, realizing big power gains meant spending hours researching catalogs and poring over specifications to ensure compatibility. S&S has simplified the process by providing all-in-one Power Pack kits. With the S&S Power Package, you'll receive a comprehensive solution that includes everything necessary to make big power without sacrificing reliability.

Wake up that stock 107" motor with a big-bore kit from the most trusted name in V-twin performance, S&S Cycles!

Features:

  • Performance matched 550 cam
  • Works with stock crankcases
  • Original engine serial numbers are retained
  • Powder coat finish match factory finish 
  • MLS (multi-layered steel) head gaskets
  • Retains stock engine height
  • Includes Cam Cover Badge

Product Style J&P Cycles Item # Catalog Number Store Sku MFR. Product # Availability
Product Style Black w/ Highlighted Fins / Chrome Pushrod Tubes / Chain Drive J&P Cycles Item #10555220 Catalog Number10555220 Store Sku MFR. Product #310-1223C AvailabilityIn Stock: Ships within 24 hours
Product Style Black w/ Highlighted Fins / Black Pushrod Tubes / Chain Drive J&P Cycles Item #10555221 Catalog Number10555221 Store Sku MFR. Product #310-1225C AvailabilityIn Stock: Ships within 24 hours
Product Style Black w/ Non Highlighted Fins / Black Pushrod Tubes / Chain Drive J&P Cycles Item #10555222 Catalog Number10555222 Store Sku MFR. Product #310-1226C AvailabilityOnly 1 Left: Ships within 24 hours
Product Style Black w/ Highlighted Fins / Chrome Pushrod Tubes / Gear Drive J&P Cycles Item #10555223 Catalog Number10555223 Store Sku MFR. Product #310-1224C AvailabilityIn Stock: Ships within 24 hours
Product Style Black w/ Highlighted Fins / Black Pushrod Tubes / Gear Drive J&P Cycles Item #10555224 Catalog Number10555224 Store Sku MFR. Product #310-1227C AvailabilityIn Stock: Ships within 24 hours
Product Style Black w/ Non Highlighted Fins / Black Pushrod Tubes / Gear Drive J&P Cycles Item #10555225 Catalog Number10555225 Store Sku MFR. Product #310-1228C AvailabilityIn Stock: Ships within 24 hours
This product is vehicle specific.
Select a vehicle to ensure fitment.
Fitment Notes & Exceptions
  • Not for Twin-Cooled models, for oil-cooled only
This Product Fits
Harley Davidson
Electra Glide Standard FLHT 2019, 2020, 2021, 2022
Electra Glide Ultra Classic FLHTCU/I 2017, 2018, 2019
Road Glide CVO ST FLTRXSTSE 2024, 2025
Road Glide FLTRX 2017-2026
Road Glide Special FLTRXS 2017, 2018
Road King FLHR/I 2017-2022
Road King Special FLHRXS 2017, 2018
Softail Breakout FXBR 2018, 2019
Softail Deluxe FLDE 2018, 2019, 2020
Softail Fat Bob FXFB 2018, 2019
Softail Fat Boy 114 FLFBS 2018, 2019, 2020, 2021, 2022
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, 2022
Softail Street Bob FXBB 2018, 2019, 2020
Street Glide FLHX/I 2017-2026
Street Glide Special FLHXS 2017, 2018
Product Description
Part Numbers
Fitment
2 Customer Reviews for All Models
2 5/5
7 Questions & 1 Answers for All Models
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