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Yamaha Genuine XJR1300 Front Master Cylinder Diaphragm 4HM-25854-00

Yamaha Genuine XJR1300 Front Master Cylinder Diaphragm 4HM-25854-00

$26.00 USD
$0.00 USD $26.00 USD
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Low stock: 1 left

Genuine Yamaha OEM

Product Description

Yamaha Genuine factory master cylinder reservoir diaphragm (DIAPHRAGM, RESERVOIR). Molded from fuel- and brake-fluid-resistant EPDM synthetic elastomer, this flexible accordion-style rubber membrane seats directly beneath the front brake (or hydraulic clutch) reservoir top cover. It expands and contracts with fluid level changes to create a moisture-proof seal, preventing ambient air, water, and debris from contaminating the hydraulic brake fluid.

Vehicle Compatibility

Standard Genuine replacement fitment for Yamaha road, sport-touring, and naked platforms:

Make Model Chassis / Engine Variant Model Years
Yamaha XJR1300 / XJR1200 / SP 4PU / RP02 / RP06 / RP10 / RP19 1994–2016
Yamaha FJR1300 / FJR1300A / AE RP04 / RP08 / RP11 / RP13 / RP23 2001–2020
Yamaha FZS600 Fazer RJ02 / 600cc Inline-4 1998–2003
Yamaha FZS1000 Fazer / FZ1 RN06 / RN14 / 1000cc DOHC 2001–2005
Yamaha TDM900 RN08 / RN11 / 900cc Parallel Twin 2002–2010
Yamaha BT1100 Bulldog RP05 / 1100cc V-Twin 2002–2006
Yamaha XJ600 / XJ900 / Diversion 4BRA / 4LBA / 4KM 1992–2003

 

Fitment & Technical Details

Fits inside the front brake master cylinder rectangular fluid reservoir housing. Seat the rubber lip evenly around the reservoir rim before securing the plastic diaphragm plate cap (4HM-25855-00) and outer metal reservoir cover. Replace immediately if swollen, torn, or hardened by old brake fluid.

Important: Please ensure the part number matches your motorbike before purchasing. If you have any questions about the part or its compatibility, feel free to contact us. We’re here to help!

At Dmmotorcycles, we’ve specialized in vintage and vintage sports motorcycles and parts directly from Japan since 1998. We stock a wide selection of rare genuine and high-quality aftermarket parts and continually update our inventory to meet growing demand.

Looking for a specific part? Don’t hesitate to ask! We may have it in stock even if it’s not listed online. If not, we’ll do our best to source it for you.

We’re also happy to provide guidance on installation and offer excellent after-sales support to ensure your satisfaction.

Shipping Information

We ship worldwide, carefully inspecting and securely packing all parts to ensure safe delivery. Your order will be insured and shipped quickly, with the best available shipping option chosen for speed and reliability.

Please note:

  • All parts are shipped from Cyprus (Europe).
  • Customers outside the EU may incur additional import taxes based on the value of the item.

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How we handle your order in 4 steps

  • 1. Order Verification

    We confirm the order and make sure the correct part number, quantity, and any special requests match what’s on the sales confirmation

  • 2. Quality Check

    Since our parts are new old stock we Inspect the parts for any defects, scratches, or missing components to ensure it meets quality standards. otherwise will notify you before proceeding with the order.

  • 3. Safe and Secure packaging

    • Protective Wrapping: We use bubble wrap or foam padding to wrap the part, focusing on sharp edges or delicate components.
    • Boxing: We place the wrapped part inside a sturdy box, filling gaps with packing materials to prevent movement.
    • Sealing and Labeling: Securely tape the box and attach the shipping label, including orientation-specific markers like "Fragile."

  • 4. Finalizing of Shipment

    We confirm the shipping address and contact details, give the package to the Post, keep the tracking number, and then send it to the customer along with the shipment notification.

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