YAMAHA 3J6-25850-00-00 Sg Front Brakes Master Cylinder Cylinder/calipers

( Manufacturer Part Number: 3J6-25850-00-00 ), ( Part Type: Brake Cylinder Caliper ), ( Machine Type: Motorcycle ), ( Oe/oem Part Number: 3j6-25850-00-00, 1j7-25885-01-00, 3j6-25810-02-00 ), ( Color: Silver ), ( Material: Steel ), ( Vintage Part: Yes ), ( Placement On Vehicle: Front )

Review YAMAHA Sg Special Front Brakes Master Cylinder/calipers fits XS1100 1100 XS 1980

The **Yamaha 3J6-25850-00-00 front brake master cylinder and caliper assembly** from the iconic **1980 Yamaha XS1100/XS1100S** is a meticulously engineered component that embodies the classic balance of performance, reliability, and craftsmanship that defined Yamaha s golden era of motorcycle design. This front brake system, though now a sought-after vintage part, was originally designed to deliver precise stopping power while maintaining the nimble handling and sporty character of the XS1100, a machine that bridged the gap between cruiser and sport-touring bikes. The **master cylinder**, a critical hydraulic actuator, features a robust, anodized aluminum body with a smooth, ergonomic lever that offers a satisfying, progressive resistance essential for riders who demanded both control and feedback during aggressive cornering or sudden stops. Its internal design incorporates a dual-piston system, ensuring consistent brake fluid pressure and minimizing air entrapment, a common issue in older hydraulic systems. The **front calipers**, paired with this master cylinder, are equally impressive, featuring a sleek, dual-piston floating design that clamps evenly onto the disc, providing balanced braking force across the rotor s surface. The caliper itself is constructed from heat-treated aluminum, offering a lightweight yet durable solution that resists warping under high temperatures a critical consideration for the XS1100 s high-revving, performance-oriented engine. The system s overall build quality reflects Yamaha s attention to detail, with precise machining, tight tolerances, and a finish that, while not as polished as modern components, still exudes a sense of solidity and confidence. For collectors, restorers, or enthusiasts seeking to revive the raw, aggressive spirit of the XS1100, this front brake assembly is not just a functional replacement but a piece of automotive history one that ensures the bike s legendary stopping power remains intact while paying homage to the engineering prowess of the 1980s. Whether installed on a fully restored classic or a project bike, this component guarantees that every brake application delivers the same responsive, engaging feel that made the XS1100 a legend in its time.

### **Pros and Cons of Buying a 1980 Yamaha XS1100/XS1100SG Front Brake Master Cylinder/Calipers (Part #3J6-25850-00-00)**

1. **Authentic Fit and Function** This is an original Yamaha part designed specifically for the XS1100/XS1100SG, ensuring proper fitment, compatibility, and performance. Aftermarket parts may not match the original specifications, potentially leading to handling or braking inconsistencies.

2. **Reliability and Durability** Yamaha s components from this era were built to last, especially on well-maintained bikes. The master cylinder and calipers were designed for heavy-duty use, making them a solid choice for riders who prioritize longevity.

3. **Easier Maintenance and Replacement** Since these are genuine parts, they come with the same service records and technical support (if needed) as original equipment. This simplifies repairs and ensures that mechanics familiar with the bike can work on them without hesitation.

4. **Aesthetic and Historical Value** For enthusiasts who value the original look and feel of their bike, using OEM parts preserves the classic aesthetic of the XS1100/XS1100SG. This is particularly appealing to collectors and restorers.

5. **Potential for Increased Resale Value** If you plan to sell the bike later, keeping original or high-quality parts can make it more attractive to buyers who appreciate authenticity.

6. **Compatibility with Other OEM Components** Since these parts are designed to work with the rest of the bike s braking system, they integrate seamlessly with other original components like brake lines, pads, and rotors, reducing the risk of leaks or improper function.

---

1. **Age and Wear** Parts from this era (early 1980s) may show signs of wear, rust, or degradation, especially if they ve been stored improperly. This could require additional cleaning, refurbishing, or even replacement of internal components (e.g., seals in the master cylinder).

2. **Limited Availability and Lead Times** Genuine Yamaha parts from this period can be difficult to source, particularly if the bike is no longer in production. You may need to search through used parts markets, salvage yards, or specialty motorcycle suppliers, which could take time and effort.

3. **Higher Cost Compared to Aftermarket** Original Yamaha parts are often more expensive than aftermarket alternatives. While they may justify the cost for some riders, budget-conscious buyers might opt for newer or third-party parts that offer similar performance at a lower price.

4. **Potential for Inconsistent Quality** Even OEM parts from this era can vary in quality depending on their condition and origin. Some may have been stored in harsh environments, leading to corrosion or dry rot, which could affect performance.

5. **Specialized Knowledge Required** Working on an older bike like the XS1100 may require more technical expertise, especially if you re unfamiliar with hydraulic braking systems from the 1980s. This could mean additional labor costs if you re not comfortable handling the repair yourself.

6. **Environmental and Safety Concerns** Older brake fluids (if still present in the system) may contain additives that are no longer recommended for modern braking systems. You may need to flush the system with a compatible fluid (e.g., DOT 4 or DOT 5.1) to ensure safe and efficient braking.

---

Buying the **1980 Yamaha XS1100/XS1100SG front brake master cylinder/calipers (3J6-25850-00-00)** is a solid choice if you prioritize **authenticity, reliability, and long-term compatibility** with your bike. These parts are ideal for riders who:

- Want to preserve the original character of their motorcycle.

- Are restoring or maintaining a classic bike and prefer OEM components.

- Have the budget and patience to source genuine parts, even if they come at a higher cost.

However, if you re on a tight budget, lack access to these parts, or are open to aftermarket alternatives that offer similar performance, you may find newer or third-party options that are easier to obtain and potentially more reliable in the long run. Additionally, if the parts show signs of significant wear or corrosion, investing in refurbishing or replacing them with newer components might be a better long-term solution.

---

- **If restoring or maintaining an original XS1100/XS1100SG for authenticity:** Proceed with the purchase of the OEM parts, but inspect them thoroughly for wear, rust, or damage. Consider refurbishing the master cylinder (e.g., replacing seals and bleeding the system) to ensure optimal performance.

- **If prioritizing cost-effectiveness or ease of access:** Explore aftermarket alternatives from reputable brands (e.g., **Brembo, Akebono, or OEM-compatible parts from suppliers like **Race Tech or **Yamaha s own aftermarket division**). Ensure the aftermarket parts meet or exceed the original specifications for braking power and durability.

- **If unsure about the condition of the parts:** Have a mechanic inspect them before purchasing. If they re severely corroded or damaged, it may be worth investing in newer parts to avoid future issues.

- **For safety:** Always use **DOT 4 or DOT 5.1 brake fluid** (avoid older, incompatible fluids) and ensure the entire braking system is flushed and bled properly after installation.

Ultimately, the decision depends on your priorities whether that s **preservation of the original bike, cost savings, or a balance of both**. For most riders, a well-maintained OEM part is a worthwhile investment, but it s important to weigh the pros and cons against your specific needs.

Details:

1980 Yamaha XS1100 XS 1100 SG Special Front Brakes Master Cylinder/Calipers.

part #: 3j6258500000 prices

• $17.99-$99.99

specifications cyclevintagee:

• for models: Xs1100, 1100, Xs
• for makes: Yamaha
• for years: 1980
• mpn: 3j6-25850-00-00
• part type: Brake Cylinder Caliper
• machine type: Motorcycle
• oe/oem part number: 3j6-25850-00-00, 1j7-25885-01-00, 3j6-25810-02-00
• color: Silver
• material: Steel
• vintage part: Yes
• placement on vehicle: Front

payments cyclevintagee:

• wallet: Google-pay
• credit card: Visa
• other

shipping cyclevintagee:

• cost: $0.00
• service: USPS Ground Advantage
• class: Standard
• transit: 4-8 Days
• carrier: USPS
• type: Fixed

offer cyclevintagee:

• availability: In Stock
• quantity: 1
• sold: 0
• options: Ship-to-home
• started: March 2, 2026

returns cyclevintagee:

• policy: No Returns

general cyclevintagee:

• condition: Used
• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories

seller cyclevintagee:

• # reviews: 8231
• rating: 100.0%
• city: Lincoln, Missouri

Yamaha 3J6-25850-00-00 Is Similar To:

• 0170-28346-0 Yamaha Venture Royale Front Fairing Badge Emblem (30.3% similar) ...(August 6th, 2018)
• 103-93-a Rensen Honda Yamaha Nos Acorn Engine Cylinder Head Nut Set (30.4% similar) Please look at all the pictures and read whole. They may not be clean. Any questions. They may have repairs. Oem original equipment manufacturer which may be new or used items for that machine. They may need some repairs. It is also cheaper if you do not need a lift gate truck. Not looking at the ...(April 25th, 2018)
• 10m-83310-k0 64-14620 Bent Bike New Front Turn Signal Yamaha Xs Xj Xv (26.3% similar) This high quality light assembly was purchased brand new by the previous owner and never used comes in original manufacturers packaging see pics. Up for bid is new front turn signal yamaha xs JX xv series motorcycles in excellent unused condition see pics. This after market oem replacement fits ...(October 13th, 2018)
• 1100xs Yamaha 1980 Xs1100 Special (41.9% similar) Original finish shows typical wear and use. Original equipment rear inner fender, from a 1980 yamaha XS1100 special. Straight and solid with no structural damage...(October 17th, 2017)
• 122-21510-00-00 Superior New Top Yamaha Front Fender Nos Vintage Made In (35.6% similar) USA buyer pays new old stock 1960 'S-70S vintage after market chrome front fender, made in japan. Shipping cost...(November 12th, 2018)
• 152-21510-00-00 Yamaha Front Fender New Vintage Nos Oem (35.6% similar) USA buyer pays yamaha YDS1 YDS2 250 front fender. Original wrapping paper pictured is not included. Shipping cost. Genuine yamaha part number...(December 16th, 2018)
• 183-23124-00-00 Yamaha Factory Oem Front Fork Inner Of (33.1% similar) Set of they are number 4 in the image,nothing else. For both left and right sides. 1969 yamaha AS2C factory oem front inner fork tubes...(October 24th, 2018)
• 1l8-11111-01-00 Yamaha Oem Cylinder Head Vintage Ahrma Altered (27.5% similar) Not asking questions, gets you the wrong part every time guaranteed. We answer all questions. West side of the road. Combustion chamber good. Oem original equipment manufacturer which may be new or used items for that machine. Shipping domestic. Both spark plug threads are good. Ecm-cycle attn: dept...(August 31st, 2018)
• 1lx-11351-00 1lx-11351-10-00 Yamaha Cylinder Base Gasket Oem (22.2% similar) Shipping is through the us postal service. The shipping price is based on weight and measurements of box. It cannot be tracked outside of the states and insured. Each item is sold as. If your application is not listed as fitting, do purchase it. There can be surface rust, loads of shelf dirt, and ...(January 18th, 2019)
• 1w2-11111-00-00 Yamaha Oem Cylinder Head (33.6% similar) Spark plug threads are good. They may not be clean. They may need some repairs. Sometimes calculated shipping can be high and needs to adjusted. Parts may have some shelf wear from years of being on shelves and or moved over. Combustion chamber is good. Yamaha IT175 endure oem cylinder head oem 1W2 ...(July 14th, 2017)
• 214-11361-00 Yamaha Nos Cylinder Stud For (28.8% similar) I've included a pic of the stud alongside ruler which shows them just shy the price is for a set of 4 studs...(January 19th, 2019)