Harley Rear Master Cylinders and Parts
Harley-Davidson Rear Master Cylinders & Parts at JJ Motorsports
Upgrade or rebuild your Harley’s rear brake master cylinder with premium assemblies and kits from JJ Motorsports, featuring chrome and black finishes for precise feel and reliable performance on Sportster XL, Softail, Dyna, and Touring models. These high-quality components restore crisp rear braking and custom style.
Shop Drag Specialties and Accutronix rear master cylinders for proven durability. Explore related categories such as Harley braking for pads and lines, or Harley for foot controls and pegs to complete your brake setup.
Top Harley-Davidson Rear Master Cylinders & Parts
- Drag Specialties Rear Master Cylinder XL 14+ Chrome 78073C – Chrome rear master cylinder for 2014+ Sportster; direct bolt-on with clean factory look.
- Drag Specialties Master Cylinder Rear 148004-BC422 – Black rear master cylinder assembly; fits Softail and Dyna with smooth operation.
- Accutronix Rear Master Cylinder Assembly MC627-C – Billet chrome rear master cylinder; custom styling with superior pressure delivery.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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DRAG SPECIALTIES Rear Master Cylinder - XL '14+ - Chrome 78073C
DRAG SPECIALTIES
$37.75A responsive rear brake system is critical for controlled deceleration and weight transfer during hard braking—especially on XL models where hydraulic demand is higher. The DRAG Specialties rear master cylinder delivers reliable pressure modulation with...17310604- SKU:
- 17310604
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- TYPE:
- MASTER CYLINDER
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- COVER
$37.75 -
DRAG SPECIALTIES Rear Master Cylinder Gasket - 5 Pack - XL 14-17 78073S
DRAG SPECIALTIES
$25.15A compromised rear master cylinder gasket compromises your entire braking system—allowing fluid seepage that degrades stopping power and creates safety hazards. This 5-pack of OEM-equivalent gaskets ensures a proper seal on your XL rear master cylinder...17310605- SKU:
- 17310605
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- TYPE:
- MASTER CYLINDER
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
- MOUNTING POSITION:
- REAR
$25.15 -
DRAG SPECIALTIES Rear Master Cylinder Reservoir Cover - '08-'20 FLT 76715
DRAG SPECIALTIES
$55.60A worn or damaged master cylinder reservoir cover compromises brake system integrity and exposes internal components to contamination—both critical issues on a touring cruiser where reliability matters. This OEM-spec replacement from Drag Specialties...17310190- SKU:
- 17310190
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- TYPE:
- MASTER CYLINDER
- UNITS:
- KIT
$55.60Qty in Cart: 0Quantity:Price:$55.60Subtotal: -
COVINGTONS Rear Master Cylinder Cover - Dimpled - Black C1157-B
COVINGTONS
$90.95CNC machined from billet aluminum, Include new mounting hardware, Made in the U.S.A.06100678- SKU:
- 06100678
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- GLOSS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
- COLOR/FINISH:
- POWDER-COATED
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- STYLE:
- DIMPLED
- TYPE:
- MASTER CYLINDER
$90.95Qty in Cart: 0Quantity:Price:$90.95Subtotal: -
JOKER MACHINE Master Cylinder Cover - Finned - Black 08-01-1
JOKER MACHINE
$59.95Your stock master cylinder cover is purely functional—but your brake system deserves better. The JOKER MACHINE Finned Master Cylinder Cover upgrades that overlooked component with billet-style aesthetics while maintaining full OEM compatibility, giving...17310545- SKU:
- 17310545
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- 6061-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- STYLE:
- FINNED
- TYPE:
- MASTER CYLINDER
- UNITS:
- EACH
$59.95 -
JOKER MACHINE Master Cylinder Cover - Finned - Black/Silver 08-01-2
JOKER MACHINE
$59.95Your stock master cylinder cover is purely functional—but your brake system deserves better. The JOKER MACHINE Master Cylinder Cover elevates your braking assembly with precision-machined billet styling while maintaining the durability and reliability...17310546- SKU:
- 17310546
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- STYLE:
- FINNED
- TYPE:
- MASTER CYLINDER
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 6061-T6 ALUMINUM
- PRODUCT NAME:
- COVER
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- SILVER
- UNITS:
- EACH
$59.95 -
JOKER MACHINE Master Cylinder Cover - Finned - Chrome 08-01FN
JOKER MACHINE
$65.95Your stock master cylinder cover is functional, but it's also a missed opportunity for visual impact and functional upgrades. The JOKER MACHINE Master Cylinder Cover replaces that cast assembly with precision-machined billet styling while improving...17310547- SKU:
- 17310547
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- STYLE:
- FINNED
- TYPE:
- MASTER CYLINDER
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- CHROME
- MATERIAL:
- 6061-T6 ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$65.95 -
JOKER MACHINE Master Cylinder Cover - Finned - Black - FL 08-008B
JOKER MACHINE
$54.95Your stock master cylinder cover is purely functional—but it doesn't have to look that way. The JOKER MACHINE Master Cylinder Cover replaces that cast OEM piece with a precision-machined billet alternative that elevates your brake system's appearance...17310548- SKU:
- 17310548
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- COLOR/FINISH:
- SILVER
- COLOR/FINISH:
- ANODIZED
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- STYLE:
- FINNED
- UNITS:
- EACH
- MATERIAL:
- 6061-T6 ALUMINUM
- TYPE:
- MASTER CYLINDER
$54.95 -
JOKER MACHINE Master Cylinder Cover - Smooth - Chrome - 99-17 08-01S
JOKER MACHINE
$65.95Stock master cylinder covers are purely functional—but yours doesn't have to look that way. This JOKER MACHINE cover replaces the OEM cast piece with a premium billet-style alternative that delivers both visual impact and durability. It's a...DS373442- SKU:
- DS373442
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- COVER
- TYPE:
- MASTER CYLINDER
- UNITS:
- EACH
- MATERIAL:
- 6061-T6 ALUMINUM
- STYLE:
- SMOOTH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
$65.95 -
DRAG SPECIALTIES Master Cylinder Repair Kit - Rear 42382-82-PE-LB1
DRAG SPECIALTIES
$22.00A compromised rear master cylinder can turn a reliable ride into a safety liability—loss of braking pressure, spongy pedal feel, and unpredictable stopping power are unacceptable on any machine. The DRAG SPECIALTIES Master Cylinder Repair Kit restores...DS195040- SKU:
- DS195040
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- BORE SIZE IMPERIAL:
- 5/8'
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD
- TYPE:
- MASTER CYLINDER
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- SILVER
- UNITS:
- KIT
- TYPE:
- BRAKE
$22.00Qty in Cart: 0Quantity:Price:$22.00Subtotal: -
DRAG SPECIALTIES Master Cylinder Repair Kit - Rear 42374-86-PE-LB1
DRAG SPECIALTIES
$20.95A failing rear master cylinder compromises braking performance and puts you at risk—especially critical for Harley-Davidson riders where responsive braking is essential to safety. This DRAG Specialties rebuild kit restores your master cylinder to OEM...DS195046- SKU:
- DS195046
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- SILVER
- UNITS:
- KIT
- STYLE:
- STANDARD
- RIDING STYLE:
- STREET
- TYPE:
- BRAKE
- BORE SIZE IMPERIAL:
- 5/8'
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- MASTER CYLINDER
$20.95Qty in Cart: 0Quantity:Price:$20.95Subtotal: -
DRAG SPECIALTIES Master Cylinder Repair Kit - Rear 42374-77-PE-LB1
DRAG SPECIALTIES
$20.95A compromised rear master cylinder will leave you stranded or worse—unable to trust your braking system when it matters most. This DRAG SPECIALTIES rebuild kit restores your H-D's brake performance to OEM specifications with quality components engineered...DS195047- SKU:
- DS195047
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- BORE SIZE IMPERIAL:
- 3/4'
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- SILVER
- UNITS:
- KIT
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- STYLE:
- KELSEY-STYLE
- TYPE:
- BRAKE
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- MASTER CYLINDER
$20.95Qty in Cart: 0Quantity:Price:$20.95Subtotal: -
DRAG SPECIALTIES Master Cylinder - Rear 148004-BC422
DRAG SPECIALTIES
$150.10A properly functioning rear master cylinder is critical for maintaining consistent brake pressure and stopping power in high-performance applications. The DRAG Specialties Master Cylinder delivers reliable hydraulic control with premium construction that...DS530625- SKU:
- DS530625
- Availability:
- Ships Same Business Day
- Weight:
- 2.06 LBS
- COLOR/FINISH:
- POLISHED
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- MASTER CYLINDER
- STYLE:
- STANDARD
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TYPE:
- BRAKE
- UNITS:
- EACH
- BORE SIZE IMPERIAL:
- 3/4'
$150.10 -
DRAG SPECIALTIES Master Cylinder - Rear 148010-BC422
DRAG SPECIALTIES
$150.10A quality rear master cylinder is fundamental to brake system reliability and consistent pedal feel, especially in high-performance or modified applications where factory components may not meet your demands. The DRAG SPECIALTIES Master Cylinder delivers...DS530626- SKU:
- DS530626
- Availability:
- Ships Same Business Day
- Weight:
- 1.88 LBS
- PRODUCT NAME:
- MASTER CYLINDER
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POLISHED
- RIDING STYLE:
- STREET
- TYPE:
- BRAKE
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- STYLE:
- STANDARD
- BORE SIZE IMPERIAL:
- 3/4'
$150.10 -
EASTERN MOTORCYCLE PARTS Brake Dowel Pin A-44124-72
EASTERN MOTORCYCLE PARTS
$10.70Brake system reliability depends on precision-engineered components that maintain structural integrity under extreme conditions. The EASTERN MOTORCYCLE PARTS Brake Dowel Pin A-44124-72 is a critical fastening element that ensures your brake assembly...DS324613- SKU:
- DS324613
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- PRODUCT NAME:
- DOWEL PIN
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- COLOR/FINISH:
- NATURAL
- MOUNTING POSITION:
- REAR
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- FRONT
- TYPE:
- BRAKE
$10.70Qty in Cart: 0Quantity:Price:$10.70Subtotal: -
COVINGTONS Rear Master Cylinder Cover - Black C1153-B
COVINGTONS
$90.95A quality rear master cylinder cover does more than protect critical hydraulic components—it eliminates moisture ingress, corrosion, and contamination that compromise braking performance. This COVINGTONS cover is CNC-machined from billet aluminum,...06100183- SKU:
- 06100183
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- COLOR/FINISH:
- GLOSS
- STYLE:
- FINNED
- UNITS:
- EACH
- COLOR/FINISH:
- POWDER-COATED
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- MASTER CYLINDER
- COLOR/FINISH:
- BLACK
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
$90.95 -
ACCUTRONIX Rear Master Cylinder Assembly MC627-C
ACCUTRONIX
$299.95The ACCUTRONIX MC627-C rear master cylinder assembly delivers clean brake line routing with its side-exit design, eliminating the need for complex bends and reducing potential failure points. Built with precision machining and domestic manufacturing,...DS530622- SKU:
- DS530622
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- MASTER CYLINDER
- TYPE:
- MASTER CYLINDER
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
$299.95 -
ACCUTRONIX Master Cylinder Assembly - Black MC627-B
ACCUTRONIX
$299.95A quality master cylinder is the foundation of responsive, reliable braking—and the ACCUTRONIX MC627-B delivers both with precision engineering built right here in the U.S.A. The smooth outward-facing design integrates cleanly into custom builds, while...17310411- SKU:
- 17310411
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- BORE SIZE IMPERIAL:
- 5/8'
- PRODUCT NAME:
- MASTER CYLINDER
- STYLE:
- CUSTOM
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
$299.95 -
EASTERN MOTORCYCLE PARTS Rear Master Cylinder A-41761-78B
EASTERN MOTORCYCLE PARTS
$192.95A reliable rear master cylinder is critical for maintaining consistent brake pressure and stopping power—especially in high-performance or racing applications where brake feel and modulation directly impact lap times and safety. This Eastern Motorcycle...17310379- SKU:
- 17310379
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- MASTER CYLINDER
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- TYPE:
- BRAKE
- UNITS:
- EACH
- BORE SIZE IMPERIAL:
- 3/4'
$192.95 -
PERFORMANCE MACHINE (PM) Rebuild Kit - Master Cylinder - 11/16" 0060-3905
PERFORMANCE MACHINE (PM)
$42.95Master cylinder failures don't just compromise your braking system—they compromise your safety. A PM rebuild kit restores your master cylinder to OEM specifications with factory-grade components, ensuring consistent hydraulic pressure and reliable brake...DS243009- SKU:
- DS243009
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MASTER CYLINDER BORE DIAMETER IMPERIAL:
- 11/16'
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- MASTER CYLINDER
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
$42.95
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Rear Master Cylinders and Parts
- Compatibility: Ensure parts fit your Harley's model (e.g., Sportster XL 2004-2017, FLT Touring 2008-2020, Big Twin) and specifics like bore size (3/4", 5/8", 9/16", 11/16"). Use the vehicle selector for year-specific matches to avoid installation or performance issues.
- Type of Use: For street cruising or touring, opt for standard master cylinders or rebuild kits for reliable braking; custom or performance builds benefit from billet assemblies for enhanced style and pressure delivery in demanding conditions.
- Components and Upgrades: Select complete assemblies, covers (dimpled/finned), gaskets (rubber), rebuild kits (seals/pistons), or pins. Focus on features like CNC-machined designs, anodized finishes, and included hardware for leak-free rebuilds.
- Brand and Quality: Choose Joker Machine for warrior-style covers, Drag Specialties for chrome assemblies, Covingtons for finned billet options, Accutronix for custom 5/8" bore, Eastern for black 3/4" assemblies, or Performance Machine for 11/16" rebuilds. Prioritize billet aluminum/steel with chrome/black finishes for durability and corrosion resistance.
- Installation and Cost: Most parts are bolt-on or direct replacements for easy DIY; rebuild kits simplify overhauls. Prices range from $10.15 for gaskets to $299.95 for assemblies—factor in USA-made quality and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models do these rear master cylinders and parts support? Parts support models like Sportster XL (2004-2017), FLT Touring (2008-2020), Big Twin, and more—use the year/make/model filter for exact compatibility.
- How do billet master cylinders improve performance? They offer superior pressure delivery with custom styles and bore sizes (e.g., 5/8") for better braking feel and durability.
- What is typically included in a rebuild kit? Kits like Performance Machine include components for one master cylinder (11/16" bore), excluding cover gaskets—check details for specifics.
- Are covers and gaskets weather-resistant? Yes, with anodized/chromed billet aluminum and rubber gaskets for corrosion resistance and secure seals.
- What if a part doesn't fit my Harley? Verify bore size, finish, and model before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related braking parts? Yes—explore pads, rotors, or lines in the Harley braking category to complement your master cylinder upgrade for optimal stopping power.
