Share to FB

F5K: Factory 5-Speed Kicker

Our F5K is designed to fit on bikes fitted with our DD5 or Factory 5-Speed bikes.  We know bolt on kicker kits are nothing new.  Over the years many have come and gone for one common reason: they all relied on a ratchet hub or shaft extension that screwed on to the end of the mainshaft in place of the 3/4-16 nyloc jam nut.  They all eventually broke for the same reason.  The end of the mainshaft snapped off! 

The new F5K kicker kits use a ratchet hub that presses onto the shank of the mainshaft, then the O.D. of the ratchet hub presses into the over-sized trap door bearing.  The ratchet hub is effectively located and secured from moving by the over-sized door bearing.

  • Heavy duty 6061-T6 all billet aluminum construction bearing door and kicker cover
  • 8620 steel heat treated Press-In-Mainshaft hub and retainer
  • BAKER  Heavy Duty stainless steel straight kick arm
  • BAKER bronze kick pedal with 5/8″ spindle
  • Transmission case removal from bike not required for installation
  • Hydraulic type kits come with 1.5″ piston, 11/16″ bore master cylinder is required for matched compatibility
  • Cable type kits come with ball ramp actuator
  • Compatible with Factory Electric Starter, for kick and electric start
  • Bearing trap door and kicker cover come pre-assembled for quick installation
  • Backed by our 2 year unlimited warranty

 Notes for fitment

  • 1989-1999 Factory 5-Speeds and BAKER Direct Drive 5-Speeds
  • 1999-2006  Factory 5-Speeds
  • Will not clear factory exhaust
  • Fuel Injection Models will need to be converted to carburetor
  • TwinCam models will need an ignition retrofit to either a cam type sensor or a magneto

Trap Door Finish Options

You have 3 different options for trap door finish on the F5K.


F5K Show Polished Trap Door

F5K Wrinkle Black Trap Door

F5K Raw Trap Door

Kicker Cover Options

We manufacture and offer 2 different kicker covers making the F5K completely customizable from stock to custom build. The kicker covers are available in mechanical cable ball and ramp style or a hydraulic model.   Kicker covers come completely show polished.  Consult our Tech lines for upgraded custom finishes.

Kicker Gears

All BAKER F5K’s come with their own version of the  Klassic Kicker Gears standard. These gears start out of 1018 HR Steel, precision machined and heat treated to 50-55 RC; these gears are tough for long life and tons of kicks.

F5K Mainshaft Retainer Cross Section

Mainshaft Retainer
We developed our whole kicker kit around our mainshaft retainer.  Aftermarket kits use a retainer that is part of the ratchet gear that gets threaded on to the mainshaft.  With every kick of your bike this retainer continuously gets tighter on the threads of the mainshaft.  This eventually causes failure and the end of the mainshaft breaks off.  This can be seen in the image to the right.  Our kit uses you a larger diameter mainshaft bearing to house our ratchet gear.  This ratchet gear becomes the support for the mainshaft.   The mainshaft is retained by a nut, just like the factory so no extra stress is put on to the shaft.  Making it the most reliable kit out there. 


PN                                 DESCRIPTION

578-56MR-K     Factory 5 Kicker w/Raw Door, Mechanical Ball & Ramp Cable Kicker
578-56HR-K     Factory 5 Kicker w/Raw Door, Hydraulic Kicker
578-56MB-K     Factory 5 Kicker w/Wrinkle Black Door, Mechanical Ball & Ramp Cable Kicker
578-56HB-K     Factory 5 Kicker w/Wrinkle Black Door,  Hydraulic Kicker
578-56MP-K     Factory 5 Kicker w/Polished Door, Mechanical Ball & Ramp Cable Kicker
578-56HP-K     Factory 5 Kicker w/Polished Door, Hydraulic Kicker


This tip applies to F5R, F6R, F5K, F6K, RSD and Big Dog style clutch cable installations that utilize a split ferrule for cable retention. It is recommended that the inner cable, ferrule and ball ramps are coated liberally with wheel bearing grease upon final installation. This step has been omitted for photo clarity.

After attaching the clutch cable to the clutch lever, be sure that the cable adjuster is fully collapsed. Screw the cable into the sidecover. Slide the ball ramp over the exposed inner cable, then the split ferrule over the inner cable end. Rotate the ball ramp fully rearward removing all of the slack from the inner cable and engaging the ferrule into the ball ramp. Install a miniature nylon cable tie on the inner wire directly in FRONT of the ball ramp as far back as possible. Snip the excess tie as short as possible. This will prevent the ferrule from accidently becoming dislodged during installation and/or clutch adjustment.

 Step 1

Step 2  Step 3
 Step 4  Step 5 Final Look

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 F5K Fluid Capacity Dry: 22-24fl-oz


BAKER F5K install instructions with exploded views Click Here 

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.

TERM 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.


BAKER™ transmission assemblies, transmission kits, primaries, and oil pans 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. BAKER™ clutches, kicker cover kits, belt drives, F6F kit, reverse systems, covers and accessories 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. 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 invoice of purchase. If after an evaluation has been made by BAKER™ and a defect in materials and/or workmanship is found, BAKER™  will, at BAKER™  option, repair or replace the defective part of the assembly. 


Due to the uniqueness, low price and assembly outside of typical production process of products indicated as Insider Special products, purchasing these Insider Special products include a warranty so to guarantee the original purchaser to be free of manufacturing defects in materials and workmanship for a period of 1 year from the date of purchase or up to 12,000 miles. We have provided extended options for you to purchase below. 


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 charges. 


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 manufactures 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.

The words H-D®, Softail®, FXR®, Dyna®, FLT®, FLH®, Sportster®, and Buell® are registered trademarks and are for reference only.

F5K: Factory 5-Speed  Kicker for Harley-Davidson 5-speed motorcycles
Move your mouse over image to zoom. Click to enlarge.
F5K: Factory 5-Speed  Kicker for Harley-Davidson 5-speed motorcycles F5K: Factory 5-Speed  Kicker for Harley-Davidson 5-speed motorcycles
Web Product ID: 5207675395
Baker Drivetrain Team Illustration