SHIMANO FC-739 Deore Xt Mountain Bike Crank Set Arms 175 26/36/46T Chainrings

( Brand: Shimano ), ( Manufacturer Part Number: FC-739 ), ( Model: SHIMANO DEORE XT FC-739 ), ( Type: Cranksets ), ( Color: Silver ), ( For Bike Type: Mountain Bike ), ( Country Of Origin: Japan ), ( Vintage: Yes )

Review SHIMANO Deore Xt Mountain Bike Crank Set 175 Arms 26/36/46t Chainrings

The **Shimano FC-739 Deore XT Mountain Bike Crankset** represents a refined blend of performance, durability, and precision engineering, designed to elevate your climbing efficiency and descending control on even the most demanding trails. With its **175mm Q-factor arms**, this crankset strikes an ideal balance between stability and agility, allowing for a natural, responsive pedal stroke that minimizes fatigue over long rides. The **XT-grade components** ensure a robust yet lightweight construction, featuring a **30mm-wide bottom bracket shell** that enhances stiffness and power transfer, while the **4-bolt spindle design** delivers superior strength and compatibility with a wide range of frames and bottom brackets. Built to withstand the rigors of aggressive riding, the crankset s **heat-treated arms** resist bending and warping, ensuring consistent performance even after countless descents and technical climbs.

At the heart of the FC-739 is Shimano s **Hollowtech II** bottom bracket system, a hallmark of reliability and smoothness that reduces friction and extends component longevity. The **26/36/46t chainring setup** offers a versatile gearing range, catering to both spirited climbs and high-speed descents with precision. The **26t compact small ring** provides a punchy, efficient pedal stroke for steep ascents, while the **46t large ring** ensures strong acceleration when conditions allow, making it ideal for fast, flowing trails or aggressive riders who demand every ounce of power. The **36t mid-ring** serves as a versatile middle ground, perfect for maintaining cadence on moderate climbs or transitioning between gears with ease. Each chainring is **shaved and polished** for optimal chain engagement, reducing wear on both the chain and cassette while improving shifting performance.

The **Deore XT branding** signifies Shimano s commitment to delivering a high-performance, mid-range option that doesn t compromise on quality. While it may not carry the same level of premium tuning as the top-tier XTR or Ultegra, the FC-739 excels in practicality and value, offering **durable construction, smooth shifting, and reliable durability** for riders who demand performance without the premium price tag. Whether tackling rocky singletrack, technical descents, or grueling endurance rides, this crankset provides the **stiffness, responsiveness, and efficiency** needed to push your limits with confidence. Its **clean, modular design** also ensures easy installation and maintenance, making it a practical choice for both serious enduro riders and weekend warriors alike. For those seeking a crankset that balances power, versatility, and longevity, the Shimano FC-739 Deore XT is a standout choice that delivers where it matters most on the trail.

### Pros and Cons of buying a Shimano FC-739 Deore XT Mountain Bike Crankset (175mm Arms, 26/36/46t Chainrings)

1. **Reliability and Durability** Shimano s Deore XT components are well-regarded for their robustness and longevity, especially in demanding off-road conditions. The FC-739 crankset is designed to handle heavy loads and frequent use without excessive wear.

2. **Performance-Oriented** The XT series is positioned above Deore but below top-tier models like Saint or SLX, offering a balanced mix of performance and value. The crankset is optimized for climbing efficiency and power transfer, making it suitable for aggressive riding styles.

3. **Compatibility** The 175mm arm length is a standard for many modern mountain bikes, ensuring a good fit for most riders. The 26/36/46t chainring setup provides a versatile gear range, ideal for climbing steep terrain while maintaining reasonable top-end speed.

4. **Maintenance-Friendly** Shimano components are widely available, and replacement parts (e.g., chainrings, bottom brackets) are easy to source. The crankset s design allows for straightforward maintenance, such as chainring replacement or bottom bracket servicing.

5. **Weight Considerations** While not the lightest option (e.g., compared to carbon cranks), the FC-739 is relatively lightweight for its class, offering a good trade-off between weight and durability. The aluminum construction resists bending and fatigue better than cheaper alternatives.

6. **Chainring Durability** The 26/36/46t setup is durable, with the smaller chainrings (26t) designed to last longer than single-crosschain setups, reducing the need for frequent replacements. The larger chainrings (46t) are also built to handle heavy loads without warping.

7. **Compatibility with Other Shimano Groupsets** If you re using a Shimano drivetrain (e.g., Deore, SLX, or higher), the FC-739 integrates seamlessly with other components like derailleurs, shifters, and cassettes, ensuring smooth shifting and reliable performance.

8. **Resale Value** Shimano XT components hold their value well, making this crankset a practical long-term investment if you plan to upgrade or sell your bike later.

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1. **Higher Cost Compared to Lower-End Options** The FC-739 is more expensive than entry-level cranksets (e.g., Shimano Deore or SRAM NX), which may not offer the same level of durability or performance. If you re on a tight budget, you might find alternatives that serve similar purposes for less.

2. **Not the Lightest Option** While durable, the aluminum construction means the crankset is heavier than carbon alternatives (e.g., Shimano Saint or SRAM NEX). For racers or ultra-lightweight riders, this could be a drawback, though the difference may not be significant for most trail riders.

3. **Chainring Wear Over Time** The 26t chainring is prone to wear faster than larger chainrings due to the increased stress from cross-chaining. While durable, you may need to replace it sooner than the 36t or 46t, depending on riding conditions.

4. **Limited Customization** The fixed chainring setup (26/36/46t) doesn t allow for adjustments like a double or triple chainring system. If you prefer a wider gear range or specific ratios, you might need to pair it with a different drivetrain setup.

5. **Bottom Bracket Compatibility** The FC-739 uses a standard press-fit bottom bracket (e.g., PF30 or PF42), which is common but may require additional tools or adapters if your bike uses a different standard (e.g., square taper or threaded). Ensure compatibility before purchasing.

6. **Potential for Overkill for Casual Riders** If you primarily ride on smooth trails or light terrain, the XT crankset may offer more performance than you need. For casual or beginner riders, a Deore crankset could suffice without the extra cost.

7. **Maintenance Costs** While maintenance is straightforward, parts like chainrings or bottom brackets can be pricey if they wear out prematurely. Regular cleaning and lubrication are essential to prolong the lifespan of the crankset.

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The **Shimano FC-739 Deore XT crankset (175mm arms, 26/36/46t chainrings)** is a strong mid-range option that excels in durability, performance, and compatibility. It s ideal for riders who demand reliability in aggressive or technical terrain without the premium price of top-tier components. The crankset strikes a balance between weight, durability, and gear versatility, making it a practical choice for serious mountain bikers who want a step up from entry-level setups.

However, it s not the best choice for riders prioritizing ultra-lightweight performance or those on a tight budget. If you re looking for a more affordable alternative, consider a Deore crankset, and if you want lighter weight, carbon cranks (e.g., Shimano Saint) may be worth the investment.

- You ride demanding trails frequently and need a durable, high-performance crankset.

- You re using a Shimano drivetrain and want seamless integration.

- You value longevity and don t mind paying a premium for reliability.

- You appreciate the gear range provided by the 26/36/46t setup.

- You re a casual rider or mostly ride smooth trails where a Deore crankset would suffice.

- You prioritize weight savings and are willing to invest in carbon cranks.

- You re on a tight budget and can find a suitable alternative (e.g., SRAM NX or lower-tier Shimano).

- Your bike s bottom bracket isn t compatible with the press-fit standard.

**Final Verdict:** The FC-739 is a **highly recommended** choice for intermediate to advanced mountain bikers who want a crankset that delivers consistent performance and durability without reaching the price of top-tier models. It s a smart investment for riders who push their bikes hard and expect their components to keep up.

Details:

Shimano Deore XT FC-739 Mountain Bike Crank Set 175 Arms 26/36/46T Chainrings, All parts are used and may exhibit signs of cosmetic mechanical wear including scratches, scuffs, chips, cracks, dings, dents marring to the finish decals some which have been cosmetically/paint retouched. Includes only what you see in the main/first picture. Some parts may not be original OEM. All parts may be disassembled for packing.

part #: fc739 price

• $109.99

specifications vintagebikepartiz:

• brand: Shimano
• mpn: Fc-739
• model: Shimano Deore Xt Fc-739
• type: Cranksets
• color: Silver
• for bike type: Mountain Bike
• country of origin: Japan
• vintage: Yes

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• options: Ship-to-home
• started: March 10, 2026

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