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Hydraulic Side Cover

Overview The Hydraulic Side Covers was one of the first parts in the FF product line. We took away all the ‘fat’ of the standard aftermarket side cover and left the function. The true art of any mechanical part is the function. The parts that make it happen, that do the work and yield the results. We sucked the side cover up to the bearing door as much as possible by utilizing aerospace derived hydraulic ball plugs, that enabled the bleeder screw and feed line ports to be right next to the gasket surface. We even put the conventional transmission dipstick on a diet.  Knowing what’s it like to be on the end of that wrench, hustling to get that bike done, ‘just right’ we tooled up these covers to offer either front or rear banjo fitting ports. Smashed out of virgin aluminum stock, just down I-94 in greater Chicago, these side covers are forged on 1500 ton presses with a beautiful one hit die. The result is the tidiest design possible, yielding the strength necessary to get the job done, and a smooth surface finish to match. Features
  • Forged 6061 Side Covers tuck tighter to the transmission than the stock cable style side covers
  • Compact and versatile hydraulic line routing enabling the banjo fitting to be on the front or rear of the transmission
  • Compatible with Stock H-D 5 Speeds, BAKER OD6, DD6, DD5 Transmissions or any other transmission that uses a stock equivalent mechanical cable style side cover
  • System designed to offer the same amount of adjustability at the hand control and engagement point as the stock mechanical clutch cable
  • Comes standard with 12pt ARP, stainless steel fasteners
  • Backed by a 2 yr limited warranty
  • Forged 6061 Side Covers tuck tighter to the transmission than the stock cable style side covers
  • Compactly designed and packaged dipstick sneaks into the side cover assembly. Yields the standard functionality, while maintaining as small as footprint as possible
  • Compact and versatile hydraulic line routing enabling the 3/8-24 banjo fitting to be on the front or rear of the transmission
  • Utilizes the stock mechanical center rod assembly. Enabling the adjustment you want at the clutch lever, as well as being compatible with all types of clutch available on the market
  • Steel 1.5″ diameter piston rides on high grade .125″ thick Buna N O-Rings. Delivers the smooth engagement throughout the stroke of the lever, as well as the durability against the transmission fluid and silicone based brake fluid used in today’s hydraulic clutch systems
  • By using 5/32″ diameter stainless steel, aerospace derived, ball plugs in conjunction with some crafty precision machining, the fluid can be routed to the outside of the piston, while the banjo fitting remains right near the gasket surface
  • Comes standard with high strength, polished, 12pt ARP, stainless steel fasteners


PN Description Fitment
453-56 Hydraulic Side Cover Kit, Rear Feed BAKER DD5, DD6, Stock 5 Speeds
454-56 Hydraulic Side Cover Kit, Rear Feed BAKER OD6
455-56 Hydraulic Side Cover Kit, Front Feed BAKER DD5, DD6, Stock 5 Speeds
456-56 Hydraulic Side Cover Kit, Front Feed BAKER OD6


Add: ‘-P’ Suffix for a Polished side cover and dipstick
Add: ‘-C’ Suffix for a Chrome side cover and dipstick Add: ‘-BA’ Suffix for a Black Anodized side cover and Polished dipstick Add: ‘-U’ Suffix for an upgrade to a BAKER Builder’s Kit or Complete Transmission


  Hydraulic Side Cover, Rear Feed, Cutaway Features   Hydraulic Side Cover, Rear Feed, Piston Bore Passages   Hydraulic Side Cover, Front Feed, Cutaway Features   Hydraulic Side Cover, Front Feed, Piston Bore Passages


  • Installation on 1993-2006  FLH/FLT models requires either the stock cast engine oil spout to be trimmed to clear the bleeder screw or installation of the BAKER Function Formed FLH/FLT Engine Oil Spout.
  • Banjo Bolt is 3/8-24 thread (provided by customer)  bleeder screw is 1/4-28 thread (included in the kit)
  • Designed to work with DOT 5 Brake Fluid
  • Designed to work with the stock sized 11/16″ diameter piston clutch lever assembly or an aftermarket equivalent.
  • Transmission oil level is checked with the bike on the kick stand, and threading the dipstick into the side cover.  
Recommended Upgrades – FLH/ FLT Function Formed Oil Spout Installation Instructions BAKER LSD FF Hydraulic Side Cover Installation Instructions with Exploded Views : Click Here

Taking design cues from our ever increasing product family known as Function Formed, we have wrapped the outer design around the functional components found inside. No garnish, or decorations, just the meat and potatoes to make this side cover look as good as it functions.


  • FF aesthetics milled out of 6061-T6 with chrome finish.
  • Low profile external features for maximum exhaust clearance.
  • 12 Point stainless steel ARP bolts and gasket included.
  • 1.5″ diameter piston included.
  • Compatible with H-D or 11/16″ hydraulic master cylinders.

 Fitment: BAKER DD7, BAKER GrudgeBox, Stock 6-Speed

PN DD7-106C-Kit (For Chrome)

PN DD7-106B-Kit (For Hog Black)

Screaming Eagle bikes must retrofit to the cable style center push rod system; 3pc system.

We are currently in the process of producing the Hydraulic Side Covers for 2018-Later applications. Please fill out the information below to be the first to know when this product will be available for purchase:



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.

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Hydraulic Side Cover
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Hydraulic Side Cover Hydraulic Side Cover
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