Baker DD6 7-Speed Builders Kit

(1 review)

Item: 390573-28180620

$3491.35

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Baker DD6 7-Speed Builders Kit


  • Direct replacement of the Cruise Drive Harley-Davidson factory 6-speed transmission
  • The 7th gear enables the motorcycle to make full use, by the way of gear ratio management, of the torque and power put out by the MoCo's Milwaukee Eight V-twin engine
  • Unlike the stock mainshaft which includes 1st through 4th gears, the DD7 is lightweight and only includes the small 1st gear, minimizing shift clunk
  • Features a shortened 1st gear and tightened all other gears for a smooth and powerful riding experience with continuous acceleration from 1st to 4th gear
  • Shift smoothness is achieved by use of a new linear roller ball detent which is part of the supplied billet top cover
  • Comes ready to slide in the bike, no case modifications, shimming of the gear set or adjustments required
  • 7th main drive gear, main drive gear bearing, main drive seal are all included to replace 6th main
  • Stainless steel ARP 12-point head bolts for door, top cover, stock side cover, Baker re-cal box and leads all included
  • Reuses stock shifter pawl
  • Includes new main drive gear bearing and seal, polished door, door gasket, side cover gasket, top cover gasket and self-adhesive DD7 side cover emblem
  • Utilizes F6F door bearing retainer plate
  • DD7 door bearings are 28% wider than stock
  • Backed by a 5 year, 50,000 mile limited warranty
  • Made in the USA
Specification Details
Country of Origin USA
Engine Type Milwaukee Eight
Fifth Gear Ratio 1.27:1
Finish Wrinkle Black
First Gear Ratio 3.76:1
Fourth Gear Ratio 1.55:1
Second Gear Ratio 2.75:1
Seventh Gear Ratio 1.00:1
Sixth Gear Ratio 1.10:1
Third Gear Ratio 2.06:1
Transmission 7-Speed
Warranty 5 Year Manufacturer Warranty

Vehicle Fitment


Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Harley Davidson
  • FLDE Softail Deluxe 2018-2020
  • FLFB Softail Fat Boy 2018-2019, 2025-2026
  • FLFBS Softail Fat Boy 114 2018-2021, 2024
  • FLHC Softail Heritage Classic 2018-2021, 2025-2026
  • FLHCS Softail Heritage Classic 114 2018-2024
  • FLHR Road King 2017-2021
  • FLHRXS Road King Special 2017-2021
  • FLHT Electra Glide Standard 2019-2022
  • FLHTCU Electra Glide Ultra Classic 2017-2019
  • FLHTK Electra Glide Ultra Limited 2017-2021
  • FLHTKL Electra Glide Ultra Limited Low 2017-2019
  • FLHX Street Glide 2017-2023
  • FLHXS Street Glide Special 2017-2023
  • FLHXST Street Glide ST 2022-2023
  • FLSB Softail Sport Glide 2018-2021
  • FLSL Softail Slim 2018-2021
  • FLTRK Road Glide Limited 2020-2023
  • FLTRU Road Glide Ultra 2017-2019
  • FLTRX Road Glide 2017-2023
  • FLTRXS Road Glide Special 2017-2021
  • FLTRXST Road Glide ST 2022-2023
  • FXBB Softail Street Bob 2018-2020, 2025-2026
  • FXBBS Softail Street Bob 114 2021-2024
  • FXBR Softail Breakout 2018-2019, 2024-2026
  • FXBRS Softail Breakout 114 2018-2020
  • FXDR Softail 114 2019-2020
  • FXFB Softail Fat Bob 2018-2019
  • FXFBS Softail Fat Bob 114 2018-2023
  • FXLR Softail Low Rider 2018-2020
  • FXLRS Softail Low Rider S 2020-2021, 2024-2026
  • FXLRST Softail Low Rider ST 2022-2026
  • FXST Softail Standard 2020-2022, 2024

Customer Reviews


Thanks guys

By Ronald E. on  Verified Purchaser

Order on Sat. got here on Tue. Great product. Thanks guys for being such a good dealer!


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