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DD7 Main Drive Gear Tapered Roller Bearing Kit

Heal your Achilles heel with the BAKER Main Drive Gear Bearing Kit for the BAKER Direct Drive 7-Speed.


P/N 740-67

Kit includes

  • BAKER double tapered roller bearing assembly
  • Replacement DD7 main drive gear 
  • Replacement countershaft bearing


This kit provides everything you need to eliminate the all too common stock maindrive gear bearing failures. We include our exclusive BAKER double tapered roller bearing assembly, a replacement DD7 main drive gear, and our new main drive gear/countershaft bearing installation and removal tool.

Also available is a Transmission Rebuild Kit to go along with this double tapered roller bearing kit. P/N TRK-CD6-2 


Instructions: Click here


  • The BAKER Direct Drive 7-Speed (DD7)

Standard Gear Case Finish Examples (Not applicable to all products)




Wrinkle Black

These example finishes are intended to show the exterior treatments of cases, top covers and doors.


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.


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 are permitted within 90 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.


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.

DD7 Main Drive Gear Tapered Roller Bearing Kit
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Customer Reviews
5.0 Based on 2 Reviews
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Cesar S.
United States United States
  • What model motorcycle do you ride? Harley 2017 Riad Glide
Love Baker Tranny

Excellent service I recommend 100%

BAKER Drivetrain DD7 Main Drive Gear Tapered Roller Bearing Kit Review
Jerry M.
United States
  • What model motorcycle do you ride? 2008 FXDF Fatbob
DD7 MDG Bearing Kit

I finally got the chance to install this kit on an 08 FatBob with the DD7. Everything went well, the only thing that I believe needs to be made more clear is the orientation of the bearing race and adapter assembly into the transmission. A better picture or illustration would make things much easier to know which way is 'IN'. I've used Baker Transmissions and parts for years and have nothing but praise for the quality of the products that they sell.

Web Product ID: 2348980076622
Baker Drivetrain Team Illustration