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

-1018HR 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

Included Parts


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


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


Recommended upgrades


- N1 Shift Drum

- Street Performance 9 Plate Clutch

- Transmission Rebuild Kits

- Bully Derby Cover (1999-2006 5 Hole Derby Cover Models)


Click on any of the images below to learn more


N1 Drums

SP9- Street Performance Clutch

Transmission Rebuild Kits

Bully Derby Cover


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



Fully polished complete DD5 with 578-56MP-K F5K and Voyeur Top Cover

BAKER Yellow Calendar bike with 578-56MP-K, F5K and Cycle Shack exhaust

BAKER Yellow Calendar bike with 578-56MP-K, F5K and Cycle Shack exhaust close up


South Bay Customs' "Boardtrack Bobber", with 578-56MP-K F5K

South Bay Customs' "Boardtrack Bobber", with 578-56MP-K F5K close up



BAKER DRIVETRAIN| 9804 E. SAGINAW, HASLETT, MI, 48840 |1-877-640-2004| 517-339-3835 | FAX: 517-339-4590 @2012 BAKER INC