Original equipment on SRAM and Truvativ cranks, they also work well with other drive trains.

Supplied in TruVativ packaging. Bolt holes are threaded.

Item Specifications: Color, Black, Material, Aluminum, Chainring BCD, 120, Defined Color, Black, Ring Position/TYPE, Outer, Drivetrain Speeds, 10, Tooth Count, 39,

SRAM Truvativ X0 X9 39T Aluminum 10-Speed Chainring for MTB, BB30, Black

Reference Number: 6N66C5

SRAM/Truvativ X0 X9 39t Chainring - Optimize your MTB drivetrain with precision, durability, and high performance. Crafted from premium 7075-T6 aluminum, this 39-tooth outer chainring features a sleek black anodized finish and CNC/laser detailing for unparalleled quality and aesthetics. Designed specifically for 10-speed mountain biking applications, it offers seamless compatibility with SRAM X0 and X9 drivetrains, ensuring smooth, accurate shifting every ride.

Engineered for aggressive trail riding and cross-country mountain biking, the X0 X9 chainring employs advanced technology including perfect-timed shift pins and ramped teeth to deliver precise, reliable gear changes-even under demanding conditions. Its 120 BCD (Bolt Circle Diameter) and bolt hole threadings facilitate easy installation on compatible GXP or BB30 cranksets, while the thick-taper outer ring enhances strength and longevity.

This 39-tooth round chainring is ideal for mountain biking enthusiasts seeking to maximize their bike's performance, improve cadence, and achieve optimal power transfer. Whether you're tackling steep climbs or fast descents, the SRAM/Truvativ X0 X9 chainring ensures durability, lightweight performance, and precision engineering in every pedal stroke.

Upgrade your MTB drivetrain with this high-quality, performance-oriented chainring designed for serious cyclists who demand the best from their gear. Supplied in genuine Truvativ packaging, it's the perfect choice for riders looking to elevate their mountain biking experience.

  • Premium 7075-T6 aluminum construction ensures lightweight durability and superior strength for demanding MTB rides, with a sleek black anodized finish for corrosion resistance and style.
  • Designed for 10-speed SRAM/Truvativ drivetrains, this 39T chainring features precise CNC and laser detailing, offering optimized gear engagement and reliable performance on rugged trails.
  • Innovative direct-mount threaded bolt holes provide secure attachment and easy installation, compatible with GXP and BB30 cranksets to ensure seamless integration with your mountain bike setup.
  • Engineered with perfect-timed shift pins and ramps, the SRAM/Truvativ X0 X9 chainring delivers smooth, accurate shifting across multiple gear combinations, enhancing overall trail riding efficiency.
  • Stylish black color and versatile 120 BCD design make this chainring a perfect upgrade for aggressive trail riders seeking durability, performance, and sleek aesthetics in their MTB components.
Item Specifications
Ring Position/TypeOuter
Tooth Count39
Drivetrain Speeds10
Chainring BCD120
ColorBlack
Defined ColorBlack
Chainring BCD120
Chainring BCD4
Number of ChainringsS-pin BB30 2x10
Tooth Count39
MaterialAluminum
PositionOuter
Defined ColorBlack
Drivetrain Speeds10
Speed2x10
Oval/RoundRound
Teeth39
ColorBlack
Model NameX0/X9
Ring TypeOuter
Mount4x120mm

Why 365 Cycles?

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

Fast Shipping!

Professional Customer Service- available 7 days a week
Check out our 200,000+ amazing reviews!

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
  • Friday afternoon -Sunday orders ship the following Monday
  • 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.



CR2333 .

Company Details

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

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