Eagle technology provides a light, simple, durable and easy to use drivetrain. Aluminum arms. Includes X-Sync2 direct mount steel chainring with optimized chain retention technology . DUB cartridge bearing bottom bracket set sold separatelySRAM DUB technology creates a lighter, stiffer and stronger crankset. Boost compatible. 52.0mm chainline. Offers the same chain retention performance as seen in all higher-level Eagle drivetrain cranks. 32t direct mount X-SYNC 2 steel chainring included. Aluminum crank arms. 11 / 12 speed compatible. Bottom bracket sold separately. Item Specifications: Defined Color, Black, Rings, 32, Spindle Interface Type, SRAM DUB, Chainring BCD, Direct Mount SRAM, Color, Black, Chainline/Hub Compatibility, 141/148 Boost Hubs, Drivetrain Speeds, 11, Drivetrain Speeds,

SRAM SX Eagle Crankset 12 Speed 170mm 165BCD 32T 49mm DUB Black

Reference Number: 1N40V5

Upgrade your mountain biking setup with the SRAM SX Eagle Boost Crankset - the perfect combination of durability, performance, and sleek style. Designed for aggressive trail riding and enduro adventures, this 170mm aluminum crankset features innovative Eagle technology, providing a lightweight yet robust drivetrain component optimized for 12-speed systems.

Materials & Build Quality:

Constructed with high-grade aluminum alloy, the SRAM SX Eagle Boost Crankset ensures excellent strength-to-weight ratio, resisting deformation under intense riding conditions. The black anodized finish not only adds a sleek, modern look but also enhances corrosion resistance for long-lasting performance in diverse terrains.

Performance & Engineering:

Powered by SRAM Eagle technology, this crankset delivers superior drivetrain efficiency, smooth shifting, and exceptional chain retention - even on the roughest trails. The 52mm chainline enhances stability and clearance, maximizing power transfer and compatibility with Boost hubs (141/148mm). The direct mount 32t X-Sync2 steel chainring features optimized chain retention technology, reducing drops and increasing pedaling efficiency during steep climbs and technical sections.

Components & Technology:

The crankset includes a durable 32-tooth steel chainring with direct mount SRAM BCD 3-bolt pattern, compatible with 11 and 12-speed mountain bike drivetrains. The integrated DUB spindle interface (28.99mm diameter) ensures a lightweight, stiff connection to your bottom bracket (sold separately), improving power transfer and pedal stiffness. The 170mm crank arm length offers a balanced riding position, suitable for trail, all-mountain, and enduro riding styles.

Style & Use Case:

Designed for mountain bikers seeking a reliable, performance-driven crankset, the SRAM SX Eagle Boost is perfect for aggressive trail riding, technical descents, and climbing. Its sleek black finish complements any bike aesthetic, while its Boost compatibility provides increased wheel strength and clearance for wider tires and rims.

Innovative & Differentiating Features:

- Boost Compatibility: Compatible with 141/148mm Boost hubs for enhanced wheel stiffness and clearance.

- Eagle Technology: Offers a lighter, simpler, and more durable drivetrain with proven chain retention.

- Direct Mount Steel Chainring: Optimized for chain retention during rigorous rides, safeguarding against chain drops.

- Lightweight Aluminum Arms: Reduce overall bike weight without sacrificing strength, improving handling and responsiveness.

Note: Bottom bracket set sold separately. For optimal performance, pairing with a compatible SRAM DUB bottom bracket is recommended.

Upgrade your mountain bike with the SRAM SX Eagle Boost Crankset - engineered for durability, efficiency, and style on every trail.

  • Enhance your mountain biking performance with the SRAM SX Eagle Boost Crankset, featuring lightweight aluminum arms for optimal durability and strength on rough terrain.
  • Designed for 12-speed mountain bike drivetrains, this crankset offers seamless compatibility with SRAM Eagle systems and Boost hubs for increased stability and improved pedal efficiency.
  • Includes a robust 32-tooth X-Sync2 direct mount steel chainring with optimized chain retention technology, ensuring superior chain security during aggressive rides and technical climbs.
  • Constructed with SRAM DUB technology, this 170mm crankset delivers increased stiffness, reduced weight, and enhanced power transfer for improved control and responsiveness.
  • Stylish black finish and sleek design make the SRAM SX Eagle Boost Crankset a versatile upgrade for aggressive trail riding, all-mountain, and enduro bikes, combining performance with style.
Item Specifications
Defined ColorBlack
Rings32
Spindle Interface TypeSRAM DUB
Chainring BCDDirect Mount SRAM
ColorBlack
Chainline/Hub Compatibility141/148 Boost Hubs
Drivetrain Speeds11
Drivetrain Speeds12
Number of ChainringsChain Retaining Single
Crank Intended UseMountain
BB IncludedNo
Pedal Spindle9/16"
Crank Length (mm)170
TypeBoost Compatible
Length / Teeth170x32
Bolt PatternDirect Mount
Spindle TypeDUB
Chainring BCDDirect Mount SRAM 3 Bolt
BB IncludedNo
Chainline52mm
Tooth Count32
Crank Spindle Diameter28.99mm
Crank Length (mm)170mm
InterfaceDUB
Crank Arm MaterialAluminum
Pedal Spindle9/16''
Defined ColorBlack
Drivetrain Speeds12
TypeBoost
Rings Included32t
Configuration1x
Length170mm
Direct Mount/BCD3-Bolt
ColorBlack
Model NameSX Eagle
Chainline52mm
BB Shell Width68/73mm
MaterialAluminum
Spindle InterfaceSRAM DUB

Why 365 Cycles?

365 Cycles is an Authorized SRAM Dealer, and we offer the Full SRAM Warranty!

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365 Cycles delivers all your cycling needs fast! We don't waste time preparing your order. Our priority is to serve our customers first and foremost. If you need help picking the right product, have questions about bike component compatibility, or just want to geek out about bikes we are here 7 days a week! Simply put, we are bike experts from dirt to tarmac and want to make sure you get the full 365 Cycles experience when you shop with us.

At 365 Cycles our mission is to simplify the shopping experience. We want to get you the right product in a quick time frame and be here if you need help with questions, warranty, friend to talk to, etc.

We’re dedicated to building lasting relationships with our customers, communities, and team members. We combine the knowledge and service of a traditional bicycle shop with the convenience of shopping in your own home.





Shipping & Handling

Most orders placed during the workweek before 1:30 pm EST ship the same day, but in rare cases (peak season/holiday periods) handling time can take up to 48 hours. If you have questions regarding shipping estimates, please let us know prior to placing your order. There is a direct signature requirement for all orders over $500.

Please allow 1-2 business days for your order tracking to update.

  • Cut off for SAME DAY SHIPPING- 1:30 pm EST Monday - Friday
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  • Due to carrier restrictions orders shipped to: PO Box, HI, AK, & PR 365 Cycles may use a comparable service to what was selected.

Combined Shipping Discounts

To offer customers savings on shipping, we offer discounts when shipping multiple items from our store. We cannot issue refunds on shipping once an order is finalized so please follow the 5 steps below and ask if you are having trouble with the discount before you make a purchase.

  1. Be sure you are using the US site: https://www.ebay.com
  2. Select Add to Cart (instead of Buy It Now) with items from our store 365Cycles
  3. Click on Proceed to Checkout. On the checkout page, the shipping service on each line item needs to match
  4. Compare First Class vs Priority as sometimes Priority can be cheaper and it gets to you faster!
  5. You’ll need to change the shipping method to Priority on every item in your cart before the rate can be calculated.

Returns

365 Cycles offers returns for 30 days on new items in their original, intact packaging. Return shipping for ALL orders are to be paid by the buyer. Please be sure to read our return policy entirely and if you have any questions, please contact Customer Service.

Full refunds are issued on items that are brand new and we are able to resell as new. 365 Cycles reserves the right to deny returns that are outside of policy including, but not limited to, used items, items missing original packaging, items with damaged manufacturer packaging, or international orders. Return orders must be shipped in a box or bubble mailer. Items shipped without an outer box will incur a restocking fee. You will be contacted through eBay if your return is ineligible for a full refund.

Returns must be initiated within 30 days from purchase date through your Purchase History under My eBay.

If we make an error in shipping, please contact us -- we will ship out the correct item and provide a free prepaid return label as quickly as possible!

Exchanges

If you need to exchange your order, the fastest and easiest way to do this is to reorder. We will ship your new order immediately and, in the meantime, please initiate a return through eBay on the original item and return it. We will refund for the returned item once it is received back.



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Company Details

365 Cycles
1180 Enterprise Rd
East Petersburg, PA 17520
United States

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