Share to FB

Cruise Drive Upgrade Bundle

This discounted bundle will help repair your stock Cruise Drive transmission.

Normally, these parts would cost:

Part Normal Retail Cost
Primary Rebuild Kit $149 for M8 applications
Street Door $395 (Polished or Black)

Factory 6-Speed Tapered Roller Bearing Kit $995
Smooth Shift Kit $399
Total  $1908-$1938
(Depending on the application)


This all-inclusive convenient kit is designed to freshen up those high mileage bikes, prevent leakage, and includes everything you’ll need after opening up your primary. Includes gaskets, seals and o-rings.

The Street Door is manufactured with 6061-T6 aluminum and features 28% wider bearings over stock. The bearings are retained with a 6-bolt steel 1/8″ plate, phantom clutch lever movement is reduced by 90%. Improved transmission function is complemented with Function Formed design cues.

Increased axial loads generated by the helical gearset allow the stock door beveled snap rings to compress, allowing the door bearings to walk in performance applications. The Street Door corrects this shortcoming and is a requirement for any serious motor upgrade.

Installs with no modifications and includes ARP fasteners, mainshaft and countershaft nuts.

Heal your Achilles heel with the BAKER Main Drive Gear Bearing Kit for 2007-up Big Twins!

P/N 640-67

Kit includes

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

The design principles that made our Six-Speed Overdrive shift so smooth were applied to create a shift drum/pillow block kit that will bolt onto any cruise drive 6-speed and give super smooth and precise shifting. The pillow block included with the kit is machined from our 6061-T6 extrusion stock for a significant increase in strength over stock. 



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.

Cruise Drive Upgrade Bundle
Move your mouse over image to zoom. Click to enlarge.
Cruise Drive Upgrade Bundle Cruise Drive Upgrade Bundle Cruise Drive Upgrade Bundle Cruise Drive Upgrade Bundle Cruise Drive Upgrade Bundle
Customer Reviews
4.3 Based on 3 Reviews
5 ?
4 ?
3 ?
2 ?
1 ?
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
Thunder A.
United States United States

this is a great product, I recommend it all the time.

United States United States
Cruise Drive Upgrade Bundle

trap door didn't fit correctly,. shifter drum did not work correctly,.installed everything and took my bike for a ride and shifted to third gear and the transmission over shifted and exploded the trans not real happy with that,.. been a motorcycle mechanic for over 35 plus years,,.. its possible I did something wrong or I just got a bad set up its fixed now with stock Harley parts and works as it should here again this may not be all bakers fault but I feel some blame is on them,.. They do have assume products mine just wasn't one of them

United States
2011 Flhx with crazy power

This is kit is amazing and so easy to install, only down side was the main shaft in the transmission was bad too. So we went with a Grudge Box to solve that.

Web Product ID: 1323375427662
Baker Drivetrain Team Illustration