SRAM FC-GX-D1 Eagle Transmission Mountain Bike Crankset Dub Gx 170MM 34T Mtb

( Brand: Sram ), ( Manufacturer Part Number: FC-GX-D1 ), ( Model: GX EAGLE TRANSMISSION FC-GX-D1 ), ( Part Type: Bike ), ( Compatible Brand: For Sram ), ( Crankarm Length: 170 Mm ), ( Color: Gray ), ( Compatible Bike Type: Hardtail Bike, Mountain Bike, Racing Bike ), ( Set Includes: Crankset ), ( Material: Aluminum ), ( Number Of Chainrings: Single ), ( Country Of Origin: Taiwan )

Review SRAM Gx Eagle Transmission Mountain Bike Crankset 170mm 34t Dub Wide T type Mtb

The **SRAM FC-GX-D1 Eagle Transmission Mountain Bike Crankset** is a high-performance, precision-engineered drivetrain component designed to elevate your off-road riding experience with unmatched efficiency, durability, and versatility. Part of SRAM s revolutionary **Eagle Transmission** lineup, this **34t Dub T-Type** crankset features a **170mm BCD (bolt circle diameter)** for compatibility with a wide range of mountain bike frames, ensuring seamless integration whether you re riding hard-tail, full-suspension, or even gravel-adjacent terrain. The **GX-D1** designation signifies a robust, mid-tier build quality, striking a balance between performance and affordability while maintaining SRAM s signature reliability and innovation. At its core, this crankset is built around the **Eagle Transmission** system, which introduces a **12-speed drivetrain** with a **1:1 gearing ratio** in the smallest chainring (34t), eliminating the need for a front derailleur a game-changer for mountain bikers seeking smoother, faster shifting and reduced mechanical complexity. The **Dub** designation indicates a **dual-chainring setup**, combining a **34t small ring** for climbing efficiency and a **larger chainring** (typically 44t or 48t, depending on the cassette) for descending power, all while maintaining a compact, efficient chainline that minimizes chain slap and improves overall drivetrain longevity.

Crafted from **high-strength aluminum**, the crankset s **T-Type arms** are engineered for both strength and weight savings, delivering a rigid, responsive platform that transfers pedal power directly to the wheels with minimal energy loss. The **34t small chainring** is optimized for climbing efficiency, allowing riders to maintain high cadence on steep, technical ascents while reducing the strain on the drivetrain. Meanwhile, the **larger companion chainring** provides ample torque for aggressive descents and technical riding, ensuring you re never caught short of power when it matters most. The **Eagle Transmission** system further enhances this performance by incorporating **SRAM s X-Sync shifting technology**, which delivers ultra-smooth, precise shifts between all 12 speeds whether you re transitioning between chainrings or adjusting your gearing mid-ride. This level of shifting consistency is particularly beneficial in fast-flowing trails or technical descents where hesitation can be costly.

Durability is a cornerstone of the **FC-GX-D1**, with components designed to withstand the rigors of mountain biking, including **hardened chainring teeth** that resist wear from aggressive riding and debris, as well as **reinforced crank arms** that handle the stresses of high-torque pedaling and rough terrain. The **170mm BCD** ensures compatibility with a broad range of frames, from entry-level to high-end models, making it a versatile choice for riders upgrading their drivetrain without needing a full frame swap. Additionally, the **T-Type bottom bracket shell** (compatible with **SRAM s Hollowtech II** or **PressFit** bottom brackets) ensures a secure, vibration-dampening fit, reducing fatigue and improving pedal feel over long rides. Whether you re tackling double-black diamond trails, enduro races, or all-day cross-country adventures, this crankset delivers the **speed, efficiency, and reliability** needed to push your limits without compromise.

For riders who prioritize **maintenance efficiency**, the **Eagle Transmission** system simplifies drivetrain upkeep by eliminating the need for a front derailleur, reducing the number of moving parts that require adjustment or replacement. The **single-chainring design** (when paired with a compatible cassette) also minimizes chain wear and extends the life of your drivetrain components, saving time and money in the long run. The **GX-D1** model strikes a perfect balance between performance and value, offering the same **Eagle Transmission** benefits as higher-end SRAM cranksets while remaining accessible to a wider range of riders. Whether you re a seasoned enduro racer, a trail junkie, or a weekend warrior looking to upgrade, this crankset is a **game-changing addition** to your bike, transforming your riding experience with its **smooth shifting, efficient gearing, and unmatched durability**. Upgrade to the **SRAM FC-GX-D1 Eagle Transmission Crankset**, and feel the difference in every pedal stroke.

The SRAM FC-GX-D1 Eagle Transmission Mountain Bike Crankset (170mm arm length, 34t chainring, Dub T-Type) is a high-performance component designed for modern mountain biking, particularly for riders seeking efficiency, weight savings, and advanced shifting capabilities. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

- The FC-GX-D1 is designed to work seamlessly with SRAM s Eagle transmission system, which offers a massive 12-speed drivetrain. This provides an unprecedented gear range (up to 52:12 or wider ratios) for climbing efficiency and descending speed. The Eagle system is ideal for riders tackling extreme terrain, including steep climbs and fast descents, where traditional drivetrains may struggle.

- SRAM s FC-GX-D1 crankset is built with a carbon fiber chainring and aluminum crank arms, significantly reducing weight compared to steel or heavier aluminum cranksets. This weight savings can improve pedal efficiency and overall bike handling, especially on long rides or aggressive trails.

- The Dub T-Type chainring is optimized for the Eagle transmission, featuring a unique tooth profile that reduces chain slap and improves chain engagement. This design enhances durability and shifting performance, particularly in rough conditions where chain alignment can be compromised.

- If you re using SRAM s wireless electronic shifting system (E-Tap AXS), the FC-GX-D1 is fully compatible. This allows for precise, rapid shifting and customizable shift maps, which can be a game-changer for riders who demand control over their drivetrain.

- The FC-GX-D1 is built to handle the demands of aggressive mountain biking. The chainring is designed to resist wear and deformation, and the crank arms are robust enough to withstand the stresses of rough terrain. The Dub T-Type chainring is also less prone to bending compared to traditional chainrings.

- SRAM s Eagle transmission is a relatively new technology, and investing in a crankset that supports it future-proofs your bike for potential upgrades or compatibility with other Eagle-compatible components (e.g., rear derailleurs, cassettes).

- SRAM is a well-respected brand in the cycling industry, and the FC-GX-D1 s design reflects modern, high-performance aesthetics. While this may not be a functional advantage, it can be appealing to riders who value brand reputation and visual appeal.

---

- The FC-GX-D1 is significantly more expensive than traditional cranksets, especially those designed for 1x drivetrains or non-Eagle systems. The price reflects the advanced technology, lightweight materials, and compatibility with Eagle transmission. For riders on a budget, this may be a major drawback.

- The FC-GX-D1 is not compatible with non-SRAM drivetrains or older SRAM systems (e.g., XX1, NX). If you re not committed to SRAM s ecosystem or plan to mix components from different brands, this crankset may not be practical. Additionally, the Eagle transmission requires a compatible rear derailleur and cassette, adding to the overall cost.

- The Eagle transmission system is more complex than traditional drivetrains. This can translate to higher maintenance costs, as specialized tools or knowledge may be required for servicing or repairs. Additionally, the risk of chain derailment or shifting issues can be higher if the system is not properly maintained or tuned.

- While the FC-GX-D1 is lightweight, the difference in weight compared to other high-end cranksets may not be significant enough for all riders to feel a tangible improvement. The perceived benefit of weight savings can be subjective and may not justify the cost for some.

- Riders unfamiliar with Eagle transmission or electronic shifting may experience a learning curve in terms of shifting feel and behavior. The rapid shifting and wide gear range can be overwhelming for beginners or those accustomed to traditional drivetrains.

- The Eagle transmission s aggressive gearing and wide ratios can increase chain wear over time, especially if the rider frequently uses the highest gears on descents or the lowest gears on climbs. This may require more frequent chain replacements compared to traditional drivetrains.

- As a relatively new and niche product, the FC-GX-D1 may have limited resale value compared to more established cranksets. Additionally, finding replacement parts or servicing options may be more challenging outside of SRAM s authorized service centers.

---

The SRAM FC-GX-D1 Eagle Transmission Crankset is a cutting-edge component that excels in performance, weight savings, and compatibility with SRAM s advanced drivetrain technology. It is ideal for riders who prioritize efficiency, aggressive trail riding, and are willing to invest in a high-performance setup. The crankset s strengths lie in its ability to handle extreme terrain, its lightweight construction, and its seamless integration with the Eagle transmission system.

- Riders who already use or plan to use SRAM s Eagle transmission system.

- Enthusiasts who demand the latest technology and are willing to pay for it.

- Competitive or aggressive riders who benefit from the wide gear range and lightweight components.

- Those who value SRAM s brand and ecosystem.

For riders on a budget, those who prefer simplicity, or those who do not plan to use the full Eagle system, a more traditional crankset (e.g., SRAM s GX or XX1) may be a more practical and cost-effective choice.

---

- You are already part of the SRAM Eagle ecosystem or plan to build a full Eagle drivetrain.

- You ride aggressive trails that demand the wide gear range and efficiency of the Eagle system.

- You prioritize weight savings and high-performance components.

- You are willing to invest in advanced technology and are prepared for the associated costs and maintenance.

- You are on a budget or prefer a more traditional drivetrain.

- You do not plan to use the full Eagle system or are open to mixing components from different brands.

- You value simplicity and lower maintenance requirements.

- You are unsure about the long-term value or durability of the Eagle system.

Details:

length : 170mm. Bottom Bracket Compatibility: SRAM DUB. Model: GX Eagle Transmission.

part #: fcgxd1 prices

• $59.95-$129.99

specifications ribicycl:

• brand: Sram
• mpn: Fc-gx-d1
• model: Gx Eagle Transmission Fc-gx-d1
• part type: Bike
• compatible brand: For Sram
• crankarm length: 170 Mm
• color: Gray
• compatible bike type: Hardtail Bike, Mountain Bike, Racing Bike
• set includes: Crankset
• material: Aluminum
• number of chainrings: Single
• country of origin: Taiwan

general ribicycl:

• condition: Used
• Cycling > Bicycle Components Parts > Cranksets

shipping ribicycl:

• type: Fixed
• transit: 4-7 Days
• cost: $0.00
• service: USPS Ground Advantage
• carrier: USPS
• class: Standard

seller ribicycl:

• rating: 100.0%
• city: Boulder, Colorado
• # reviews: 21369

returns ribicycl:

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

payments ribicycl:

• credit card: Diners-club
• other
• wallet: Paypal

offer ribicycl:

• sold: 0
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• started: May 7, 2026

Sram FC-GX-D1 Is Similar To:

• 00.0000.200.041 Sram Mtb Bike Cassette (31.7% similar) Part: 00.0000.200.041 prices...(October 19th, 2018)
• 00.0000.200.289 Sram Mountain Bike Cassette Silver 710845002892 (38.4% similar) Mountain time. You pay the regular shipping price for heaviest item and product ships through USPS or ups ground. People ride bikes for a variety of reasons. For any other reason: you can return the product reason, as long it is in original condition when was purchased, with packaging. Featuring ...(July 7th, 2018)
• 00.0000.200.393 Sram Pg-970 11-32t Mountain 710845003936 (29.2% similar) Mountain time. Mountain time. Product ships through USPS or ups ground. In-stock items purchased before 12 PO. Mountain time ship same day. You see, we love to ride bikes too, and think that everyone should with us. For any other reason: you can return the product reason, as long it is in original ...(November 12th, 2017)
• 00.0000.200.645 Sram Mrx Comp Grip Shift Bike Twist Shifter Set Cables (27.8% similar) Condition is new. Sram Marx comp 3X8 grip shift 24-SPEED bike twist shiftier set cables fits shaman. Shipped with USPS first class package...(February 28th, 2019)
• 00.0000.200.650 Sram Mrx Comp Bike Right Rear Grip Twist Shifter Gripshift (27.2% similar) Sram Marx comp 6-SPEED bike right rear grip twist shiftier grip shift fit shaman new old stock...(November 4th, 2018)
• 00.0000.200.656 Sram Comp Esp Speed Bike Rear Grip Shift (29.2% similar) New take off...(November 3rd, 2018)
• 00.2418.036.000 Sram Speed Mountain Mtb Cx Cross Cassette (26.2% similar) 10 speed teeth...(October 30th, 2018)
• 00.2418.043.000 Sram Dome Mtb Cassette Pc Chain Included (15.3% similar) Sram X01 XG-1195 cassette bundle listing: includes slightly used PC speed chain 112 links with power link. Teeth: 10-42 speed: 11-SPEED drive: 1X11 type: x-dome usage: mtb cassette fits x1 black 10-42T free priority shipping msrp: 350 feel to ping me with any questions. Ridden once. Less than 15 ...(April 29th, 2018)
• 00.2418.052.004 Sram Nx Cassette Mtb For Gx Shimano New 710845782961 (23.1% similar) Brand new in box. Sram pg cassette...(September 4th, 2018)
• 00.2418.071.000 Sram Eagle Speed Mountain Bike Cassette Xd 710845788321 (44% similar) Sram XG-1295 eagle speed cassette black brand new 12 in. Maximum strength-to-weight ratio is achieved with x-dome machined 10-COG structure...(June 13th, 2018)
• 00.2418.078.000 Sram New Gx Eagle Mtb Cassette Black (25.7% similar) I will return your call within 24 hours. Buyer pays for return shipping. Warranty:if this product is proven to be defective under normal use, it will replaced without any charge. I will replace the product with a brand new unit from same factory...(August 8th, 2018)