SKU: 37409599756
fast gear

fast gear DD6: Direct Drive 6-Speed Builder's Kit 1990-1994 FXR, 1990-1997 FLH-FLT, 3.24 1st Gear, Polished No Ear Door, N1 Shift Pattern

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Description

fast gear DD6: Direct Drive 6-Speed Builder's Kit 1990-1994 FXR, 1990-1997 FLH-FLT, 3.24 1st Gear, Polished No Ear Door, N1 Shift PatternFrom an engineering standpoint, it is difficult to design a machine or mechanism that achieves multiple objectives with minimal compromise. An amphibious car is a good example. A few have been manufactured over the years, and they achieved the goal of navigating on land and water, but did neither very well. On the other hand, a Swiss Army knife achieves multiple objectives with minimal compromise. You can snatch the cork out of a wine bottle or kill

From an engineering standpoint, it is difficult to design a machine or mechanism that achieves multiple objectives with minimal compromise. An amphibious car is a good example. A few have been manufactured over the years, and they achieved the goal of navigating on land and water, but did neither very well. On the other hand, a Swiss Army knife achieves multiple objectives with minimal compromise. You can snatch the cork out of a wine bottle or kill somebody all with the same widget. The DD6, or Direct Drive 6-speed, combines 3 technical approaches to achieve the most advanced transmission gearset design available for your Big Twin with minimal compromise. First, 1st through 3rd gears are straight cut (spur) for strength during maximum acceleration with no parasitic axial thrust. Secondly, 4th and 5th gears are automotive style helical gears for quiet and smooth operation as highway speed approaches. Lastly, 6th gear is direct drive which means there is no underdrive or overdrive in top gear which translates into 99% efficiency for minimum parasitic loss, minimum wear and tear, and maximum fuel efficiency. But we didn’t focus solely on the gearset, we made this sucker shift like glass. The sequential motion of the hard chrome plated forks is controlled by a fixed spindle radial ball bearing mounted shift drum. Hard chrome guarantees long fork life with minimal imposed friction on the fork groove of the gear. The fixed spindle drum design eliminates any chance of binding or imposed friction about the axis of drum rotation. Drum rotation is controlled by a roller detent and actuated by a BAKER shift pawl with a anti-overshift feature. To make finding neutral an easy chore, we mounted a redundant detent on the left side pillow block.
Features
  • Billet 6061-T6 bearing door
  • 1/8″ thick bearing retainer plate
  • Helical & spur gear design gear for quiet operation
  • 28 tooth comprocket forged out of 8620 gear steel
  • Regina® double row primary chain
  • All transmission seals, gaskets and hardware
  • 5 Year limited warranty

 Benefits

  • Smoother shifting
  • Positive, certain shifting
  • Easier-to-find neutral
  • Quieter operation
  • More-efficient torque-handling
Fitment
  • 1990-97 Softail
  • 1991-97 Dyna
  • 1990-94 FXR
  • 1990-97 FLT-FLH
  • 1998-99 Softail
  • 1998-00 Dyna
  • 1999 FXR
  • 1998-00 FLT-FLH
  • 2000-06 Softail
  • 2001-05 Dyna
  • 2001-06 FLT-FLH

***PLEASE CALL 517-339-3835 FOR SCREAMING EAGLE 6-SPEED TRANSMISSION APPLICATIONS.

***PLEASE CALL 517-339-3835 FOR 12MM MAINSHAFT (FOR WIDE TIRE APPLICATIONS)

Bearing Door Type: All DD6 bearing doors have the same outer profile as a stock 5 speed so exhaust brackets, torque arms etc. fit like stock. The DD6 door comes with or without an ear. The ear door is for exhaust bracket mounting and does not fit 1993-2006 FL applications. * Limited supply of chrome bearing doors with ear available. Please give us a call at 517-339-3835 to order a chrome bearing door.

      Part Numbers

      DD6-411-02 DD6 Builder's Kit, 1990-1994 FXR, 1990-1997 FLH-FLT, 3.24 1st Gear, Polished No Ear Door, Standard Shift Pattern
      DD6-411-02-N1 DD6 Builder's Kit, 1990-1994 FXR, 1990-1997 FLH-FLT, 3.24 1st Gear, Polished No Ear Door, N1 Shift Pattern
      DD6-411-03 DD6 Builder's Kit, 1990-1994 FXR, 1990-1997 FLH-FLT, 3.24 1st Gear, Black No Ear Door, Standard Shift Pattern
      DD6-411-03-N1 DD6 Builder's Kit, 1990-1994 FXR, 1990-1997 FLH-FLT, 3.24 1st Gear, Black No Ear Door, N1 Shift Pattern
      DD6-411L-02 DD6 Builder's Kit, 1990-1997 Softail, 1991-1997 Dyna, 3.24 1st Gear, Polished w/ Ear Door, Standard Shift Pattern
      DD6-411L-02-N1 DD6 Builder's Kit, 1990-1997 Softail, 1991-1997 Dyna, 3.24 1st Gear, Polished w/ Ear Door, N1 Shift Pattern
      DD6-411L-03 DD6 Builder's Kit, 1990-1997 Softail, 1991-1997 Dyna, 3.24 1st Gear, Black w/ Ear Door, Standard Shift Pattern
      DD6-411L-03-N1 DD6 Builder's Kit, 1990-1997 Softail, 1991-1997 Dyna, 3.24 1st Gear, Black w/ Ear Door, N1 Shift Pattern
      DD6-411P-02 DD6 Builder's Kit, 2001-2006 FLH-FLT, 3.24 1st Gear, Polished No Ear Door, Standard Shift Pattern
      DD6-411P-02-N1 DD6 Builder's Kit, 2001-2006 FLH-FLT, 3.24 1st Gear, Polished No Ear Door, N1 Shift Pattern
      DD6-411P-03 DD6 Builder's Kit, 2001-2006 FLH-FLT, 3.24 1st Gear, Black No Ear Door, Standard Shift Pattern
      DD6-411P-03-N1 DD6 Builder's Kit, 2001-2006 FLH-FLT, 3.24 1st Gear, Black No Ear Door, N1 Shift Pattern
      DD6-411PL-02 DD6 Builder's Kit, 2000-2006 Softail, 2001-2005 Dyna, 3.24 1st Gear, Polished w/ Ear Door, Standard Shift Pattern
      DD6-411PL-02-N1 DD6 Builder's Kit, 2000-2006 Softail, 2001-2005 Dyna, 3.24 1st Gear, Polished w/ Ear Door, N1 Shift Pattern
      DD6-411PL-03 DD6 Builder's Kit, 2000-2006 Softail, 2001-2005 Dyna, 3.24 1st Gear, Black w/ Ear Door, Standard Shift Pattern
      DD6-411PL-03-N1 DD6 Builder's Kit, 2000-2006 Softail, 2001-2005 Dyna, 3.24 1st Gear, Black w/ Ear Door, N1 Shift Pattern
      DD6-411S-02 DD6 Builder's Kit, 1999-2000 FXR, 1998-2000 FLH-FLT, 3.24 1st Gear, Polished No Ear Door, Standard Shift Pattern
      DD6-411S-02-N1 DD6 Builder's Kit, 1999-2000 FXR, 1998-2000 FLH-FLT, 3.24 1st Gear, Polished No Ear Door, N1 Shift Pattern
      DD6-411S-03 DD6 Builder's Kit, 1999-2000 FXR, 1998-2000 FLH-FLT, 3.24 1st Gear, Black No Ear Door, Standard Shift Pattern
      DD6-411S-03-N1 DD6 Builder's Kit, 1999-2000 FXR, 1998-2000 FLH-FLT, 3.24 1st Gear, Black No Ear Door, N1 Shift Pattern
      DD6-411SL-02 DD6 Builder's Kit, 1998-1999 Softail, 1998-2000 Dyna, 3.24 1st Gear, Polished w/ Ear Door, Standard Shift Pattern
      DD6-411SL-02-N1 DD6 Builder's Kit, 1998-1999 Softail, 1998-2000 Dyna, 3.24 1st Gear, Polished w/ Ear Door, N1 Shift Pattern
      DD6-411SL-03 DD6 Builder's Kit, 1998-1999 Softail, 1998-2000 Dyna, 3.24 1st Gear, Black w/ Ear Door, Standard Shift Pattern
      DD6-411SL-03-N1 DD6 Builder's Kit, 1998-1999 Softail, 1998-2000 Dyna, 3.24 1st Gear, Black w/ Ear Door, N1 Shift Pattern
      Detail

       

      Bearing Door
      All DD6 bearing doors have the same outer profile as a stock 5 speeds so exhaust brackets, torque arms etc. fit like stock. The DD6 door comes with or without an ear. The ear door is for exhaust bracket mounting and does not fit 1993-2006 FL applications. Note the images below. The DD6 door bearings are larger providing 25% more dynamic load capacity than stock bearings used through 1998, also uses a 1/8″ bearing retainer plate instead of stock style snap rings. * Limited supply of chrome bearing doors with ear available. Please give us a call at 517-339-3835 to order a chrome bearing door.

      DD6 Bearing Doors

      DD6 vs. Stock Comparison

       

       

       

       

       

       

       

       

       

       

       

       

      Redundant Neutral System

      Shift System
      Our 6 Speed shift system with roller detent guarantees smooth shifts every time and our redundant neutral ensures  that finding neutral is a easy chore. We mount a plunger detent on the left side pillow block and cut a plunger track into the shift drum itself.  The plunger follows this track during operation (shifting) and when shifting into neutral pops into a pocket. This system lets you feel that you’re shifting into neutral. No more guessing.  Shift drum features more aggressive timing on the fork groove profiles and is case hardened to 58 Rockwell for wear resistance and crisp shifts. We built our reputation on smooth shifting 6-speed transmissions; our drum designs benefit from the engineering lessons learned.
       

      FL Case Differentiations
      To see an illustrated example of the differences between FL cases by year, please open the PDF here.


      Gearset
      All DD6 gearsets are made out of 8620 steel, gears are shaper cut before heat treat then precision ground with diamond coated tooling after heat treat (58-62 Rockwell ‘C’). This extra steps ensures not only a quieter gear pair, but enables much tighter backlash control. The gearset is a combination of helical and spur gears to yield silent gear operation. The dog teeth are backcut at a 1° angle to optimize the smooth shift possible, while standard gearsets are cut to a 4° angle.  The mainshaft is unique with 1st main gear being incorporated as part of  the shaft, the countershaft also features a unique 1-piece design with 6th gear.


      DD6 Gearset Layout

      Gears and Shafts Design


      DD6 Shift Forks

      Shift Forks
      Our shift forks are made out of billet steel then dipped in a hard chrome plate bath for wear resistance, also designed with oil reliefs to ensure proper lubrication and wear resistance on fork blades and shift dogs.

      Available No Cost Options

      • Standard Shift Drum (1-N-2-3-4-5-6)
      • N1 Shift Drum (N-1-2-3-4-5-6)

      Available at an Additional Cost

      27T Comp Sprocket, available on FL models for a more aggressive primary ratio. Not compatible on Softails or Dyna models due to the inner primary design. 

      The DD6 comes in a standard 3.24 1st Gear.

      Standard Ratios
      1st Gear 3.77
      2nd Gear 2.56
      3rd Gear 1.87
      4th Gear 1.44
      5th Gear 1.15
      6th Gear 1.00

       

       

       

       

       

       

      Effective Ratios 
      1st Gear 3.24
      2nd Gear 2.20
      3rd Gear 1.61
      4th Gear 1.24
      5th Gear .99
      6th Gear .86

       

       

      Standard Ratios- shown above are without the 28 tooth comp sprocket

      Effective Ratios- shown above are with the 28 tooth comp sprocket

      Builder’s Kit Notes

      • The DD6 is not designed to be used in conjunction with belt drive primaries,auto chain tensioners or easy pull clutch kits.

      Recalibration Box PN 95E-56B

      Special Note

      • Speedo recalibration unit is required for electronic speed sensor applications; PN 95E-56B.
      • A + 12MM mainshaft length is available for wide tire applications. (Call us to ensure ordering accuracy)

      Compare the DD6

      See the difference between other transmission kits and our DD6 and OD6. Click Here for a PDF file comparing our DD6 and OD6 gearset against other manufacturers. 

      Click on the image to Compare the DD6 and OD6 gearsets


      Recommended Upgrade


      Recommended Fluid / Level

      Picking the right transmission fluid ensures the life and durability of your transmission, that’s why BAKER recommends a fully synthetic GL-5 rated gear weight oil of 75W-140. If a GL-5 rated gear lube is not available, these commonly carried viscosities (weights) will work 75W-90, 75W-140 and 85W-140. BAKER does not recommend the use of Syn3 (20W-50). For Bert’s  article on ‘Oil & Spiders’  Click Here 

      • BAKER DD6 Fluid Capacity Dry: 22-24fl-oz
      • BAKER DD6 Fluid Capacity Wet: 18-22fl-oz

      Learn more about Spectro Performance Oils here: https://spectro-oils.com

      Installation Instructions
      DD6 installation instructions with exploded views: Click Here

      Shipping Notes
      • Free Standard Shipping on $100+ Orders to the USA.
      • Except Preorder products are shipped in 48 hours.
      • Delivery to the USA:
      1. Standard Shipping : 3-10 business days
      • If time is of the essence, please consider selecting expedited delivery for faster service.
      Exchange/Return Notes
      • We offer a 30-day return/exchange service after receiving.
      • Final sale items are not eligible for returns or exchanges.
      • To process your return/exchange, please contact us at [email protected]
      • Please click here for more details>>> Return & Exchange Policy
      SKU: 37409599756

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      4.3 ★★★★★
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      Verified Purchase
      Amazon Customer
      Lexington, US
      ★★★★★ 3
      Excellent Time Keeper // Terrible Wristband !
      The watch itself is fantastic. When I first got it, and set it up, I set it to the time on my computer, which is as accurate as you can get. In the beginning I checked the time accuracy daily. After a few weeks my time checks changed to once, or twice a week. I never had to change the watch's time. The seconds would vary a little, in comparison to the computer clock. But, it never got more than 30 seconds either side of the computer clock. However, the watchband is a big time NO-GO! The buckle, where you connect it on your wrist, can be frustrating most of the time when you are trying to put it on. Once you've got it on, the strap that goes beyond the buckle is held down by a sliding keeper, that slides in and out depending on what you're doing. Terrible design! I wanted to buy a "Twist-a-Flex" wristband, but couldn't find one that matched the unusual design where the straps attach to the watch body. I bought the watch 4 months ago. Today, one of the 4 pins, that connect the straps to the watch body, fell out somewhere, making the watch impossible to wear. Excellent price. Excellent timepiece. Worst design for a wristband that I've ever seen.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on September 22, 2020
      E
      Verified Purchase
      EMac
      Lexington, US
      ★★★★★ 5
      Excellent for price, you won't be sorry
      If you are looking for a watch with a lot of features that doesn't cost a lot, this is your watch. I tear up watches fairly easily in my line of work and after I killed my Seiko I decided I would hunt out a cheap watch. There aren't a lot of watches at this price range that include a stopwatch, date (with day of the week), AND has a light that is bright enough to actually read the time in the dark. This one does. The watch not dainty; it is big and bulky, bigger than I thought it would be, but not unwieldy and not super heavy. Expect it to be big. This also helps with readability (My son can read the time on this watch from the other side of the couch). The band feels rugged, made of a pliable and soft- feeling rubber and has a two- pronged belt- like closure (think 'biker belt') that keeps it secure on the wrist. Additionally, the holes for the band goes the entire length of the band so it is adjustable for really small wrists up to about 9.25" circumference. Others have complained about how easily the face scratches, but I suspect they've failed to remove the protective coating on the lens. It's a protective film that you have to get your fingernail under to pull off. Once that's off, the lens is crystal clear and fairly tough. I've had mine for a week now and used it under some fairly harsh conditions and the lens is still clear and scratch-free. My only complaint seems petty for a watch at this price point, but the strap-end hold down 'belt'--- the loop that holds down the extra length of the strap when it's buckled--- moves easily and so in use it will occasionally come off and you have to retuck the end back into it. But seriously, this is really minor. If you need an inexpensive digital that's easy to read in both daylight and darkness, ya don't mind a large and bulky, rugged- looking watch, and don't want to spend an arm and a leg, get this one. You likely won't be sorry.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on February 4, 2023
      K
      Verified Purchase
      KLM
      West Palm Beach, US
      ★★★★★ 5
      Great wallet
      Color: Brown (Bifold)
      Great wallet, my son loved it!!
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on April 17, 2026
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      Verified Purchase
      dave randazzo
      Whiting, US
      ★★★★★ 5
      Black wallet 💰
      Color: Black (Trifold)
      I love it!!
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on April 17, 2026
      L
      Verified Purchase
      Lance
      Whiting, US
      ★★★★★ 5
      Great product
      Color: Brown (Trifold)
      Great wallet
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on March 12, 2026

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