DD6: Direct Drive 6-Speed Complete Transmission
$ 4,645.00
- Description
- Fitment
- Features
- Detail
- Warranty
* Limited supply of chrome bearing doors available. Please give us a call at 517-339-3835 to order a chrome bearing door.
If you enjoy riding for long periods of time you will enjoy the quiet, vibration dampened, worry free riding that comes with this transmission. This is the transmission for the serious rider who enjoys putting on the miles each time he gets on his bike. With the silent smoothness, vibration dampening, and direct drive engineering, you and your bike will enjoy the long haul for years to come.
The sprocket/pulley is not included in the complete transmission assembly. For the acquisition of these components, kindly contact BAKER Drivetrain at 517-339-3835.
- 1990-99 Softail
- ***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.
12mm Mainshaft: Call 517-339-3835 or chat with us via the website to ensure ordering accuracy.
- Finding neutral is very easy with a redundant neutral detent
- Shifter Pawl assembly with improved geometry for a perfect response and built in overshift protection for smooth shifting
- 1st through 3rd gears are straight cut to prevent lateral tension in those high torque, short-used gears
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.
DD6 Bearing Doors
DD6 vs. Stock Comparison
Redundant Neutral System
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.
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.
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 |
|
Call 517-339-3835 or chat with us via the website to ensure ordering accuracy. 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)
The DD6 comes in a stardard 3.24.
| 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
Complete Build Part Numbers
All Part Numbers Listed Are Standard (Effective) Gear Ratios
| New PN | Old PN | Description | Fitment |
| DD6-811*L | DD811*L | DD6 Complete Transmission | 1998-99 Softail |
| DD6-711*L | DD711*L | DD6 Complete Transmission | 1990-97 Softail |
Complete Build Notes
- The DD6 is not designed to be used in conjunction with belt drive primaries,auto chain tensioners or easy pull clutch kits.
BAKER Case vs. Aftermarket
Case Design
The BAKER Softail case design had all leak potentials in mind during the design. We added stud pads to the inside of the case so that the thread holes for the transmission studs were blind holes, NOT through holes like some aftermarket brands. Looking at the image on the right you can see the difference.
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.
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
Click here for DD6 instructions.
Installation Videos
TERMS AND CONDITIONS
BAKER Drivetrain reserves the right to change prices, terms or policies at any time without notice. Orders can be pre-paid using Visa, MasterCard, American Express, Discover or PayPal. All orders not pre-paid will be sent C.O.D. certified check or money order only unless pre-approved for company check acceptance. Any orders from outside the USA must be pre-paid in US funds via wire transfer; a $30 transfer fee will apply. Prices shown are F.O.B. Haslett, MI.
LIMITED WARRANTY POLICY
BAKER™ transmission assemblies and transmission builder 's kits, are guaranteed to the original purchaser to be free of manufacturing defects in materials and workmanship for a period of 5 years from the date of purchase or up to 50,000 miles, whichever occurs first. All other BAKER products are guaranteed to the original purchaser to be free of manufacturing defects in materials and workmanship for a period of 2 years from the date of purchase or up to 24,000 miles, whichever occurs first, except for the following; Warranty does not cover clutch plate wear, throw out bearing failures or mainshaft breakage due to improper clutch nut installation.Electrical components carry a 30-day warranty; cosmetic finishes (chrome plating, hard anodizing, powder coating) are covered for 60 days. Certain promotional products may carry a shorter warranty as specified at the time of purchase. If the product is found by BAKER to be defective, such products will, at the option of BAKER, be replaced or repaired at cost to BAKER.In the event warranty service is required, the original purchaser must call or write BAKER immediately with a description of the problem. If it is deemed necessary for BAKER to make an evaluation to determine whether the transmission assembly or transmission kit or accessory is defective, the entire transmission assembly, whether originally purchased as an assembly or kit, must be properly packaged and returned prepaid to BAKER with a copy of the original purchase invoice. If after evaluation by BAKER a defect in materials and/or workmanship is found, BAKER will, at their option, repair or replace the defective part of the assembly.
RETURNS AND EXCHANGES
Returns are permitted within 30 days of the delivery date. Any merchandise returned for any reason (exchange, credit or modification) must be accompanied by a Return Goods Authorization (RGA) number or it will be refused. Call BAKER to obtain this number prior to returning goods for any reason. There is a 15% re-stocking fee for all returned items. BAKER is not liable for any shipping.
ADDITIONAL WARRANTY PROVISIONS
NOTE: Limited warranty does not cover labor or other costs or expenses incidental to the repair and or replacement of BAKER products.This warranty does not apply if one or more of the following situations is judged by BAKER to be relevant: BAKER OEM transmissions ; (these are subject to the OEM manufacturers warranty only), Improper installation , accident, modification (including but not limited to use of unauthorized parts, transmission oils or lubricants), racing, high performance application, mishandling, misapplication, neglect (including but not limited to improper maintenance), or improper repair. BAKER shall not be liable for any consequential or incidental damages arising out of or in connection with a BAKER transmission assembly, transmission kit, component or part. Consequential damages shall include without limitation, loss of use, income or profit, or losses sustained as the result of injury (including death) to any person or loss of or damage to property.BAKER transmissions, transmission kits and accessories are designed exclusively for use in American V-Twin motorcycles. BAKER shall have no warranty or liability obligation if BAKER parts are used in any other application.If it is determined that a BAKER product has been disassembled during the warranty period for any reason, this limited warranty will no longer apply unless you were instructed to do so by a BAKER Drivetrain technician for diagnostic purposes.
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- Questions
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United StatesDisappointed
Transmission would not shift properly, tech support was poor, returned to get repaired, still didn't shift properly. Chrome and black housings all look great, neutral switch works properly, doesn't leak.
Great transmission
I went with the 28 tooth comp sprocket (36 tooth clutch basket) and the optional 2.94 first gear. I just built my motor (1340 Evo with headwork, high-lift cam, 10:1 pistons and Dynatec 2000i ignition), so I am still taking it easy breaking everything in, haven't been past 5th gear yet. But so far, it's amazing. First, the build quality is very nice. It looks and feels sturdy, and the finish on all the parts looks great (I got a black housing with chrome everything else, the standard options). Also, everything fits exactly like it's supposed to. No problems with mounting the starter and no problems with it mating up to the inner primary. Nothing is off center, and the bolt holes are nice and clean, so no need to re-tap or debur anything. As far as operation, with my upgraded clutch (stock basket with a kevlar extra plate kit), I used to have to blip the throttle to get it into neutral when it was running on the stock 5-speed, but on this one, it just goes into neutral pretty solidly and easily when I am not moving, it's not a fight to get there. So far, I haven't hit a single false neutral anywhere, and I don't think I'll ever accidentally shift into neutral between first and second while moving down the road. The only thing I noticed so far, was that third gear seems to run out a little sooner than stock (previous shift point for 4th gear was around 40 mph, but on this, it's closer to 35 mph, at least on my build), but first gear is longer, which is great and all the other shift points seem the same. On the stock, first gear seemed to be way too much and wound out super quick, so a definite improvement. Customer service was great too, and I didn't have to wait very long at all once I ordered.
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Haslett, Michigan 48840 USA | Call Us: 517-339-3835
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- Description
- Fitment
- Features
- Detail
- Warranty
* Limited supply of chrome bearing doors available. Please give us a call at 517-339-3835 to order a chrome bearing door.
If you enjoy riding for long periods of time you will enjoy the quiet, vibration dampened, worry free riding that comes with this transmission. This is the transmission for the serious rider who enjoys putting on the miles each time he gets on his bike. With the silent smoothness, vibration dampening, and direct drive engineering, you and your bike will enjoy the long haul for years to come.
The sprocket/pulley is not included in the complete transmission assembly. For the acquisition of these components, kindly contact BAKER Drivetrain at 517-339-3835.
- 1990-99 Softail
- ***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.
12mm Mainshaft: Call 517-339-3835 or chat with us via the website to ensure ordering accuracy.
- Finding neutral is very easy with a redundant neutral detent
- Shifter Pawl assembly with improved geometry for a perfect response and built in overshift protection for smooth shifting
- 1st through 3rd gears are straight cut to prevent lateral tension in those high torque, short-used gears
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.
DD6 Bearing Doors
DD6 vs. Stock Comparison
Redundant Neutral System
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.
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.
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 |
|
Call 517-339-3835 or chat with us via the website to ensure ordering accuracy. 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)
The DD6 comes in a stardard 3.24.
| 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
Complete Build Part Numbers
All Part Numbers Listed Are Standard (Effective) Gear Ratios
| New PN | Old PN | Description | Fitment |
| DD6-811*L | DD811*L | DD6 Complete Transmission | 1998-99 Softail |
| DD6-711*L | DD711*L | DD6 Complete Transmission | 1990-97 Softail |
Complete Build Notes
- The DD6 is not designed to be used in conjunction with belt drive primaries,auto chain tensioners or easy pull clutch kits.
BAKER Case vs. Aftermarket
Case Design
The BAKER Softail case design had all leak potentials in mind during the design. We added stud pads to the inside of the case so that the thread holes for the transmission studs were blind holes, NOT through holes like some aftermarket brands. Looking at the image on the right you can see the difference.
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.
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
Click here for DD6 instructions.
Installation Videos
TERMS AND CONDITIONS
BAKER Drivetrain reserves the right to change prices, terms or policies at any time without notice. Orders can be pre-paid using Visa, MasterCard, American Express, Discover or PayPal. All orders not pre-paid will be sent C.O.D. certified check or money order only unless pre-approved for company check acceptance. Any orders from outside the USA must be pre-paid in US funds via wire transfer; a $30 transfer fee will apply. Prices shown are F.O.B. Haslett, MI.
LIMITED WARRANTY POLICY
BAKER™ transmission assemblies and transmission builder 's kits, are guaranteed to the original purchaser to be free of manufacturing defects in materials and workmanship for a period of 5 years from the date of purchase or up to 50,000 miles, whichever occurs first. All other BAKER products are guaranteed to the original purchaser to be free of manufacturing defects in materials and workmanship for a period of 2 years from the date of purchase or up to 24,000 miles, whichever occurs first, except for the following; Warranty does not cover clutch plate wear, throw out bearing failures or mainshaft breakage due to improper clutch nut installation.Electrical components carry a 30-day warranty; cosmetic finishes (chrome plating, hard anodizing, powder coating) are covered for 60 days. Certain promotional products may carry a shorter warranty as specified at the time of purchase. If the product is found by BAKER to be defective, such products will, at the option of BAKER, be replaced or repaired at cost to BAKER.In the event warranty service is required, the original purchaser must call or write BAKER immediately with a description of the problem. If it is deemed necessary for BAKER to make an evaluation to determine whether the transmission assembly or transmission kit or accessory is defective, the entire transmission assembly, whether originally purchased as an assembly or kit, must be properly packaged and returned prepaid to BAKER with a copy of the original purchase invoice. If after evaluation by BAKER a defect in materials and/or workmanship is found, BAKER will, at their option, repair or replace the defective part of the assembly.
RETURNS AND EXCHANGES
Returns are permitted within 30 days of the delivery date. Any merchandise returned for any reason (exchange, credit or modification) must be accompanied by a Return Goods Authorization (RGA) number or it will be refused. Call BAKER to obtain this number prior to returning goods for any reason. There is a 15% re-stocking fee for all returned items. BAKER is not liable for any shipping.
ADDITIONAL WARRANTY PROVISIONS
NOTE: Limited warranty does not cover labor or other costs or expenses incidental to the repair and or replacement of BAKER products.This warranty does not apply if one or more of the following situations is judged by BAKER to be relevant: BAKER OEM transmissions ; (these are subject to the OEM manufacturers warranty only), Improper installation , accident, modification (including but not limited to use of unauthorized parts, transmission oils or lubricants), racing, high performance application, mishandling, misapplication, neglect (including but not limited to improper maintenance), or improper repair. BAKER shall not be liable for any consequential or incidental damages arising out of or in connection with a BAKER transmission assembly, transmission kit, component or part. Consequential damages shall include without limitation, loss of use, income or profit, or losses sustained as the result of injury (including death) to any person or loss of or damage to property.BAKER transmissions, transmission kits and accessories are designed exclusively for use in American V-Twin motorcycles. BAKER shall have no warranty or liability obligation if BAKER parts are used in any other application.If it is determined that a BAKER product has been disassembled during the warranty period for any reason, this limited warranty will no longer apply unless you were instructed to do so by a BAKER Drivetrain technician for diagnostic purposes.