SRAM NX/GX Eagle Groupset - Thunder Mountain Bikes
SRAM NX/GX Eagle Groupset - Thunder Mountain Bikes
SRAM NX/GX Eagle Groupset - Thunder Mountain Bikes
SRAM NX/GX Eagle Groupset - Thunder Mountain Bikes
SRAM NX/GX Eagle Groupset - Thunder Mountain Bikes
SRAM NX/GX Eagle Groupset - Thunder Mountain Bikes

NX/GX Eagle Groupset

SKU: NXGXCustom165NB

Regular price $474.00 Sale price$369.99
Shipping calculated at checkout.
Crank Arm Length
Hub Spacing/Chainring Teeth
Cassette Range
  • In stock, ready to ship
  • Backordered, shipping soon
  • Free shipping on all orders $59+

SRAM GX Eagle drivetrains are engineered for optimal performance. Eagle drivetrains are designed, tested, and proven to deliver durable performance for all riders. Eagle technology provides an expanded, optimum, gear range and is 100-percent compatible with all levels of SRAM Eagle drivetrain systems. This groupset includes the NX Eagle cassette for those who don't want to invest in a SRAM XD compatible freehub.

  • The GX crankset is engineered for complete chain control with each tooth precisely designed to work seamlessly with the chain’s inner and outer links
  • The GX Eagle rear derailleur gets the job done with an updated cage architecture that improves chain management and is compatible with both 10-52t and 10-50t cassettes
  • The trigger shifter puts total control of your gear selection into the thumb of one hand
  • GX Eagle chain for smooth and efficient shifting


  • Includes:  Crankset, shifter, rear derailleur, cassette, and chain
  • Speeds: 12-speed
  • Color: Lunar
  • SRAM DUB Bottom Bracket Sold Separately

SRAM GX Eagle DUB Crankset with chainring

  • Hub: 135/142mm, Boost 148mm, Boost Wide 148mm, Superboost+ 157mm, Fat Bike 177mm & 197mm
  • Chainring teeth: 32 (30t for Fat Bike models)

    SRAM GX Eagle Rear Derailleur:

    • Cage: Long
    • Max Cassette Teeth: 52
    • Cable Pull Ratio: X-actuation
    • Cage Material: Aluminum
    • Bearing Material: Steel

    SRAM NX Eagle PG-1230 Cassette:

    • Gearing: 11-50t
    • Technology (Cassette): PG
    • Freehub interface: Shimano / SRAM HG
    • Cog Sizes: 11-13-15-17-19-22-25-28-32-36-42-50

    SRAM GX Eagle Trigger Shifter:

    • Shifter Type: Trigger
    • Cable Pull Ratio: X-actuation
    • Cable Length (SL): 2200mm
    • Clamp: Discrete Handlebar clamp included, MMX compatible

    SRAM GX Eagle 12-Speed Chain:

    • Outer Link Finish: Nickel
    • Color: Silver
    • Inner Link Finish: Black Oxide
    • Chain Connector: PowerLock
    • Chain Length: 126 links
    • Pin: Solid Pin
    • PowerLock Link included

    **Dub Bottom Bracket not included


    • Chain: 12-speed Eagle chains
    • Bottom Bracket: SRAM DUB bottom brackets
    • Pedal: All 9/16" pedals
    • Compatible Freehub: Fits Shimano/SRAM 8, 9, 10-speed freehub

    Please reach out to us with any questions you may have on anything we sell. We want to make sure you get the right items the first time. Our lifelong riders at Thunder Mountain Bikes are knowledgeable and would love to talk to you!


    We currently offer both economy and expedited shipping options though FedEX and USPS.

    Orders totaling over $59 are eligible to ship for free via an economy ground option of our choice.

    Most bikes ship free within the continental US. Bike shipping to AK, HI, or PR is $250.

    If you're in need of something super-quick, please contact us directly. We may be able to overnight your order with an additional fee and depending on your location.


    Should there be an issue with the item you bought, or you no longer need your purchase, we will be happy to set up a return.

    Component & Gear Returns

    Returns may be requested within sixty (60) days of the delivery date. All returned items must be received in new, unused, and uninstalled condition, with the original tags and labels attached and in the original packaging. We cannot accept returns on any items installed or show wear of any kind.

    Bike Returns

    Returns or exchange requests for bikes must be requested by emailing us at within fifteen (15) days from the date of delivery. Bikes must be in un-ridden condition. Custom-built bikes may not be returned. Returned bikes have a $200 restocking fee and the customer pays for return shipping.

    Return Shipping

    Customers may choose to use our provided flat-rate return shipping label at $9, or choose a carrier of their choice to handle their product return.

    The $9 flat rate label will be deducted from the refund issued for the return. You can either print this label after requesting a return from the Order History in your Account profile, or you can request that we email you the label.

    For all other return shipping methods, please email us at after submitting your return request so that we can confirm the shipping information you should use to return your item(s).


    We will process your return after we receive your returned item(s) and inspect the condition. Please allow at least seven (7) days from the receipt of your item to process your refund. We will notify you by email when your return has been processed.


    If you receive defective or damaged products or if we sent you the wrong products, please contact us using the phone number or email below.


    To request a return, please log in to your customer account by clicking the customer account icon Profile icon in the top right of any page or visit

    1. In the Email field, enter your email address and click Continue.

    2. In your email account, open the email sent from our store and copy the six-digit verification code included in the email.

    3. Go back to the online store and enter a six-digit verification code to log in.

    4. Find and click on the order that you want to submit a return for.

    5. If your order has more than one item, select only the items you want to return.

    6. Select a return reason and add a note for the store if needed.

    7. Click Request Return.

    Once your return request is approved, you will receive an email with shipping instructions and a return shipping label.


    If you have any questions concerning our return policy, please contact us at:

    (928) 282-1106   |

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    Customer Reviews

    Based on 1 review
    Von H.C. (Anchorage, US)
    Great components

    Upgraded my 2021 Trek Marlin 5 from Tourney to Sram NX/GX and it's a huge improvement. My bike got way lot smoother shifting and no more dropping chains. Thunder Mountain bikes is really thoughtful bundling this groupset together for customers' convenience. It's a pretty good deal too. Just remember to grab the SRAM dub BSA bottom bracket as well to go with this groupset. Shipping to Alaska took a while but it's definitely worth the wait. Will order from this company again for bike components in the near future

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