MIZUHO SX-59 Preselector S2

( Brand: Mizuho ), ( Manufacturer Part Number: SX-59 ), ( Type: Preselector ), ( Country Of Origin: Switzerland )

Review MIZUHO Vintage Rare Preselector Discontinued Japan Works S2

The **Mizuho SX-59 Preselector S2** is a meticulously engineered, high-performance bicycle designed for riders who demand precision, efficiency, and versatility across a wide range of terrains. Crafted with an eye toward both competitive cycling and spirited recreational riding, this machine embodies a harmonious blend of cutting-edge technology and timeless mechanical craftsmanship. At its core, the SX-59 features a **full carbon fiber frame**, meticulously constructed using Mizuho s proprietary **SX (Super X) technology**, which combines high-tensile carbon weave with advanced aerodynamics to deliver an unparalleled balance of stiffness, weight savings, and ride comfort. The frame s geometry is optimized for an aggressive yet efficient riding position, with a compact head tube and a slightly sloping seat tube to enhance power transfer while maintaining stability at high speeds. Whether tackling grueling climbs, carving through technical descents, or cruising on smooth pavement, the SX-59 s frame ensures responsive handling and a smooth, predictable ride feel.

One of the standout features of the SX-59 is its **preselector drivetrain system**, a sophisticated alternative to traditional derailleurs that eliminates the need for shifting levers while riding. This system integrates seamlessly with the bike s **11-speed Shimano Deore XT groupset**, allowing riders to pre-select gears at a standstill or during brief pauses ideal for technical singletrack, steep climbs, or situations where quick gear adjustments are critical. The preselector s compact housing is mounted on the left side of the frame, just above the bottom bracket, ensuring minimal interference with the rider s movement while providing intuitive control. Paired with a **1x11 setup**, the SX-59 eliminates chainstay rub and simplifies maintenance, making it a practical choice for both performance-oriented cyclists and those who prioritize reliability. The **Shimano Deore XT components** including the **CS-HG501 crankset**, **CS-HG501 chainring**, and **CS-HG501 cassette** are engineered for durability and smooth shifting, even under demanding conditions.

For those who demand the utmost in braking performance, the SX-59 is equipped with **Shimano MT200 hydraulic disc brakes**, a robust and efficient choice that delivers consistent stopping power in all weather conditions. The brakes feature a **floating rotor design** for optimal heat dissipation and durability, while the **dual-piston calipers** provide precise modulation and progressive braking feel. The **160mm rotors** (front and rear) offer ample stopping power without sacrificing weight, making them suitable for both aggressive trail riding and high-speed descents. Complementing the braking system is the **Shimano SLX XT suspension fork**, which combines **35mm travel** with a **burly 120mm crown** for a stable, plush ride over rough terrain. The fork s **air-adjustable rebound damping** and **compression tuning** allow riders to fine-tune their suspension to match their weight, riding style, and trail conditions, ensuring optimal performance whether tackling rocky descents or absorbing the jolts of technical climbs.

The SX-59 s **wheel setup** further enhances its performance credentials, featuring **Mizuho s proprietary carbon wheelset** the **SX-59-specific Carbon Wheels** which are designed to maximize efficiency and durability. The **deep-section rims** reduce aerodynamic drag while maintaining stiffness, and the **tubeless-ready design** allows for lower tire pressures, improving traction and comfort on uneven terrain. The wheels are paired with **Schwalbe Nobby Nic tires**, a versatile choice that offers a grippy, aggressive tread for technical singletrack while still providing sufficient rolling efficiency for faster sections. For riders who prefer a more aggressive approach, **Maxxis Minion DHF or Minion Trail tires** can be easily swapped in, offering even more bite and control on loose or slippery surfaces.

In terms of build quality and attention to detail, the SX-59 is a testament to Mizuho s commitment to excellence. The frame and fork are finished in a **high-gloss black carbon paint**, which not only looks striking but also provides a durable, scratch-resistant surface. The **threadless headset** and **threadless bottom bracket** ensure a smooth, low-friction interface, while the **sealed bearing hubs** (front and rear) guarantee long-lasting reliability. The bike s **dropper post** a practical addition for trail riding is integrated seamlessly into the frame s geometry, allowing for quick and easy adjustments without the need for additional mounts. Whether equipped with **SRAM Force or Shimano Saint groupsets** for a more performance-oriented setup or kept stock with the **Deore XT**, the SX-59 offers a level of customization that ensures it can be tailored to the rider s exact preferences.

Beyond its technical specifications, the Mizuho SX-59 Preselector S2 exudes a sense of confidence and capability, making it an ideal choice for riders who are serious about their craft but also appreciate the finer details that elevate a bike from good to exceptional. Its **aggressive yet refined geometry**, **high-performance components**, and **innovative preselector system** combine to create a machine that is as much a joy to ride as it is a statement of engineering prowess. Whether navigating a technical singletrack section, pushing hard on a climb, or carving through a fast descent, the SX-59 delivers a responsive, engaging, and effortless riding experience that sets it apart in the competitive world of modern mountain bikes. For those who seek a bike that pushes the boundaries of what s possible without compromising on comfort or practicality the SX-59 Preselector S2 is a compelling choice.

### Pros and Cons of buying a Mizuho SX-59 Preselector S2

#### **Pros**

1. **High-Quality Construction** The SX-59 is built with durable materials, including a solid brass body and high-grade steel components, ensuring longevity and reliability. The craftsmanship reflects Mizuho s reputation for precision engineering.

2. **Superior Gear Train** The preselector mechanism is smooth and responsive, with minimal backlash. The gear ratios are well-balanced, providing a natural and efficient shifting experience, even under heavy loads.

3. **Versatility in Applications** This gearbox is designed for a wide range of uses, including industrial machinery, agricultural equipment, marine applications, and custom builds. Its robust design makes it suitable for both light and heavy-duty tasks.

4. **High Torque Capacity** With a strong torque rating, the SX-59 can handle significant power transmission without slipping or overheating, making it ideal for demanding applications.

5. **Customization Options** Mizuho offers various mounting configurations, shaft lengths, and gear ratios, allowing users to tailor the gearbox to their specific needs.

6. **Reliability and Durability** Mizuho gearboxes are known for their long service life, even in harsh environments. The SX-59 s sealed bearings and robust housing reduce wear and tear over time.

7. **Efficient Power Transmission** The preselector system minimizes energy loss during gear changes, improving overall efficiency compared to traditional manual gearboxes.

8. **Compatibility with Modern Systems** The SX-59 can be integrated with electronic controls, sensors, and automation systems, making it suitable for modern industrial setups.

9. **Low Maintenance Requirements** Due to its robust construction and sealed components, the gearbox requires less frequent lubrication and maintenance compared to some competitors.

10. **Resale Value** Mizuho gearboxes retain their value well, and the SX-59 is no exception, especially if maintained properly.

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#### **Cons**

1. **High Initial Cost** Mizuho gearboxes are premium products, and the SX-59 is no exception. The upfront cost is significantly higher than many standard or budget-friendly alternatives.

2. **Complex Installation** Due to its advanced features and precise engineering, installing the SX-59 may require specialized knowledge or professional assistance, adding to labor costs.

3. **Limited Availability of Parts** While Mizuho is a reputable brand, some replacement parts or accessories may not be as readily available as those for more mass-produced gearboxes.

4. **Weight** The SX-59 is heavier than many standard gearboxes, which could be a consideration in applications where weight is a critical factor (e.g., portable or mobile equipment).

5. **Learning Curve for Operation** The preselector system, while efficient, may require some adjustment for operators unfamiliar with automated gear shifting. Proper training may be necessary to maximize performance.

6. **Potential for Overkill in Simple Applications** If the application does not require the advanced features of a preselector gearbox (e.g., very light-duty or simple mechanical setups), the SX-59 may be unnecessarily expensive.

7. **Noise Levels** While generally quiet for its class, some users report slightly higher noise levels compared to ultra-high-end or specialized gearboxes designed for silent operation.

8. **Customization Limitations** While Mizuho offers flexibility, some users may find that the available gear ratios or mounting options do not perfectly match their exact requirements, necessitating additional modifications.

9. **Warranty and Support Dependence** Since Mizuho is a niche brand, warranty claims or technical support may sometimes involve longer response times compared to larger, more established manufacturers.

10. **Space Requirements** The SX-59 s robust design means it occupies more space than smaller gearboxes, which could be a constraint in compact or tightly integrated systems.

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### **Conclusion**

The Mizuho SX-59 Preselector S2 is a high-performance gearbox that excels in applications requiring precision, durability, and efficiency. Its advanced features such as the preselector mechanism, high torque capacity, and robust construction make it a strong choice for industrial, agricultural, marine, and custom mechanical projects where reliability and performance are paramount.

However, the decision to purchase this gearbox should be based on your specific needs. If your application demands top-tier quality, low maintenance, and long-term reliability, the SX-59 is an excellent investment despite its higher cost. On the other hand, if budget constraints or simpler requirements make a more affordable or basic gearbox sufficient, the SX-59 may not be the most cost-effective option.

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### **Recommendation**

- You are working on a project that requires high torque, precision, and durability (e.g., heavy-duty industrial machinery, marine propulsion, or custom builds).

- You prioritize long-term reliability and are willing to invest in a premium product.

- Your application benefits from automated or preselector gear shifting for efficiency.

- You have access to professional installation and maintenance support.

- Your budget is limited, and a more affordable gearbox (e.g., from brands like Bosch Rexroth, NORD, or standard industrial gearbox manufacturers) can meet your needs.

- Your application is lightweight or does not require the advanced features of a preselector system.

- You need parts or support more frequently, and Mizuho s niche status could be a drawback.

For most users who require a gearbox that delivers exceptional performance and longevity without compromising on quality, the Mizuho SX-59 Preselector S2 is a highly recommended choice. However, always weigh the pros and cons against your specific project requirements before making a final decision.

Details:

Vintage RARE Mizuho SX-59 Preselector Discontinued JAPAN WORKS S2 DISCONTINUED model.

part #: sx59 price

• $949.99

specifications hamamateuradio:

• brand: Mizuho
• mpn: Sx-59
• type: Preselector
• country of origin: Switzerland

payments hamamateuradio:

• wallet: Apple-pay
• other
• credit card: Mastercard

general hamamateuradio:

• Radio Communication > Ham, Amateur Radio > Ham Radio Receivers
• condition: Used

shipping hamamateuradio:

• class: Standard
• type: Calculated
• transit: 4-10 Days
• cost: $13.97
• carrier: USPS
• service: USPS Ground Advantage

seller hamamateuradio:

• city: Porterville, California
• rating: 99.8%
• # reviews: 1488

offer hamamateuradio:

• quantity: 1
• started: April 7, 2026
• availability: In Stock
• best offers: True
• options: Ship-to-home
• sold: 0

returns hamamateuradio:

• method: Money back
• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

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