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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COVINGTONS Rear Master Cylinder Cover - Diamondback - Black C3057-B
COVINGTONS
$90.95Protect your rear master cylinder from impact damage while adding refined aesthetics to your motorcycle's braking system. This CNC-machined billet aluminum cover resists corrosion and wear, ensuring your brake components stay shielded during aggressive...17310773- SKU:
- 17310773
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
$90.95 -
JOKER MACHINE Master Cylinder Cover - Smooth - Chrome - FL 08-010C
JOKER MACHINE
$65.95Your stock master cylinder cover is purely functional—but your bike's hardware deserves better. The JOKER MACHINE Master Cylinder Cover replaces that cast assembly with a precision-machined alternative that delivers genuine visual and tactile upgrades...17310553- SKU:
- 17310553
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MATERIAL:
- 6061-T6 ALUMINUM
- STYLE:
- SMOOTH
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- MASTER CYLINDER
$65.95 -
GMA ENGINEERING BY BDL Rebuild Kit - 5/8" RBK-2
GMA ENGINEERING BY BDL
$30.77If you're running GMA forward controls on a custom build, you need a master cylinder rebuild kit that matches the precision of your setup. This CNC-machined billet aluminum kit restores full hydraulic integrity and responsive braking feel, eliminating...17310280- SKU:
- 17310280
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BORE SIZE IMPERIAL:
- 5/8'
- TYPE:
- MASTER CYLINDER
- COLOR/FINISH:
- BLUE
- MATERIAL:
- BILLET ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
- COLOR/FINISH:
- SILVER
$30.77 -
DRAG SPECIALTIES Rear Master Cylinder Cover - Chrome 77779
DRAG SPECIALTIES
$51.40A chrome rear master cylinder cover protects one of your bike's most critical hydraulic components from road debris, moisture, and corrosion while adding a polished aesthetic to your build. Whether you're running a cruiser, touring bike, or custom, this...17310541- SKU:
- 17310541
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- KIT
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- MASTER CYLINDER
$51.40Qty in Cart: 0Quantity:Price:$51.40Subtotal: -
DRAG SPECIALTIES Rear Master Cylinder Gasket - 5 Pack - 08-17 FLT 76715G
DRAG SPECIALTIES
$32.50Brake system integrity depends on proper sealing, and a worn or damaged master cylinder gasket compromises hydraulic pressure and creates safety risks. This 5-pack gives you multiple replacement gaskets on hand, eliminating downtime when you need to...17310491- SKU:
- 17310491
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- TYPE:
- MASTER CYLINDER
- UNITS:
- 5 PACK
$32.50Qty in Cart: 0Quantity:Price:$32.50Subtotal: -
DRAG SPECIALTIES Rubber Boot Brake Plunger - 80-87 20603-PB
DRAG SPECIALTIES
$30.40A deteriorating brake plunger boot compromises your rear master cylinder's seal integrity, allowing moisture and contaminants to corrode internal components and degrade braking performance. This OEM-replacement rubber boot restores a positive hydraulic...DS195071- SKU:
- DS195071
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- BOOT
- UNITS:
- 5 PACK
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- MASTER CYLINDER
$30.40Qty in Cart: 0Quantity:Price:$30.40Subtotal: -
DRAG SPECIALTIES Master Cylinder - Rear 84462
DRAG SPECIALTIES
$206.80A quality rear master cylinder is fundamental to brake system reliability and response—especially in high-performance applications where consistent hydraulic pressure directly impacts stopping power and safety. The DRAG Specialties Master Cylinder...17310188- SKU:
- 17310188
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- PRODUCT NAME:
- MASTER CYLINDER
- MOUNTING POSITION:
- REAR
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POLISHED
- RIDING STYLE:
- STREET
- STYLE:
- OEM
- UNITS:
- EACH
- BORE SIZE IMPERIAL:
- 3/4'
- TYPE:
- BRAKE
$206.80Qty in Cart: 0Quantity:Price:$206.80Subtotal: -
DRAG SPECIALTIES Master Cylinder - Rear 83117
DRAG SPECIALTIES
$129.10A high-quality rear master cylinder is critical to maintaining consistent brake feel and stopping power—especially in high-demand racing and performance applications where reliability cannot be compromised. The DRAG Specialties Master Cylinder delivers...17310121- SKU:
- 17310121
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD
- BORE SIZE IMPERIAL:
- 3/4'
- PRODUCT NAME:
- MASTER CYLINDER
- TYPE:
- BRAKE
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POLISHED
- MOUNTING POSITION:
- REAR
- UNITS:
- EACH
$129.10Qty in Cart: 0Quantity:Price:$129.10Subtotal: -
DRAG SPECIALTIES Master Cylinder - Rear B17-0650
DRAG SPECIALTIES
$178.45A quality rear master cylinder is fundamental to brake system reliability and modulation, especially in high-performance applications where consistency matters. The DRAG SPECIALTIES Master Cylinder delivers the hydraulic precision your braking system...17310566- SKU:
- 17310566
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 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'
$178.45 -
DRAG SPECIALTIES Master Cylinder - Rear B17-0651
DRAG SPECIALTIES
$178.45A rear master cylinder is critical to your braking system's performance and safety—especially under high-stress racing conditions where consistent, reliable pressure delivery is non-negotiable. The DRAG Specialties Master Cylinder delivers factory-spec...17310567- SKU:
- 17310567
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POLISHED
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- MASTER CYLINDER
- TYPE:
- BRAKE
- UNITS:
- EACH
- BORE SIZE IMPERIAL:
- 3/4'
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD
$178.45
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.
