By kazimladimeji 
If you’re looking to upgrade your mountain bike to a clean, modern 1×12 drivetrain without spending GX or X01 money, the SRAM NX Eagle DUB Groupset is probably already on your shortlist. It’s one of the most affordable ways to get full Eagle 12-speed performance — and it fits standard HG freehubs, so you won’t need a new rear wheel.
Let’s take a closer look at what it offers, how it performs, and who it’s best suited for.
What You Get in the Box
The full kit usually includes:
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Rear Derailleur (12-Speed, Long Cage)
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Trigger Shifter with Clamp
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Crankset (DUB, Direct Mount 32T X-SYNC Chainring)
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Cassette (XG-1230, 11-50T)
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12-Speed Chain (126 links)
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Chaingap Gauge
Everything you need for a complete 1×12 drivetrain conversion — apart from the bottom bracket (choose the DUB version that matches your frame).
Buy on Amazon UK: SRAM NX Eagle DUB Groupset – Full Kit
SRAM’s Reputation and the Eagle Line
SRAM has a stellar reputation in MTB drivetrains, known for bold innovation and simplicity. The Eagle range was the first to deliver a massive 500%+ gear range with a single front chainring — now the default for most trail bikes.
The NX Eagle sits at the entry level of that lineup, below GX, X01, and XX1. It shares the same key technologies — like X-SYNC 2 tooth profiling, Roller Bearing Clutch, and X-Horizon derailleur geometry — but uses more cost-efficient materials, meaning slightly more weight but a much lower price tag.
For most riders, it’s the perfect balance of performance, simplicity, and affordability.
- Revolutionary innovation
- Performance that is simply second to none
- Achieve the ultimate ride
- Eagle technology revolutionised the mountain bike experience by providing riders with a 1x drive solution specifically designed to be light, strong and intuitive
- With its gear ratio, it is equipped for all terrain
- The nx eagle drive is the latest addition to the eagle family and shares technologies with the drives xx1, x01 and gx, making it 100% compatible within the eagle family
- Sram eagle drives are the only 1x drive systems that have been fully developed for optimal performance
- The kit comes without dub bottom bracket. the inner bracket suitable for the frame is ordered separately
Installation Tips
Although SRAM provides good setup guides, a few real-world tips help:
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Check your freehub – The cassette uses a standard HG spline, not the XD driver required by pricier Eagle cassettes. That means most wheels are already compatible.
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DUB bottom bracket – Make sure you buy the correct DUB BB for your frame standard (BSA, PF92, PF30, etc.).
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Chain length matters – With a 50T largest sprocket, correct chain length and B-tension setup are vital. Use the included Chaingap Gauge to dial this in.
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Cage Lock for easy wheel removal – Push and lock the derailleur cage forward when removing the wheel.
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Shifter setup – Use SRAM’s “Zero Loss” trigger for instant engagement and make sure cable tension is spot-on.
Once installed correctly, shifts are crisp and reliable — even under load.
Ride Impressions
On the trail, NX Eagle feels solid and confidence-inspiring. You get the signature SRAM click with each shift, and the 11-50T cassette gives you an excellent climbing range without sacrificing top-end speed.
Yes, it’s a touch heavier and not quite as silky as GX Eagle or Shimano XT, but in normal use you’d be hard-pressed to notice. It’s durable, quiet, and capable — ideal for trail centres, technical singletrack, or general all-mountain riding.
Suitable Bikes and Riding Styles
The NX Eagle DUB Groupset is designed for mountain bikes with a single front chainring. It’s perfect for:
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Hardtails or full-suspension trail bikes
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Down-country and all-mountain builds
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e-MTB conversions (with correct chainring size)
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Budget custom builds
It’s less suited to ultralight XC racers or those seeking the absolute lightest drivetrain — but for real-world riders, it hits a sweet spot.
Custom Build or Upgrade?
This groupset works beautifully in both cases:
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Custom Build: Ideal if you’re starting from scratch and want modern 12-speed simplicity without blowing your budget.
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Upgrade: Brilliant for riders with an older 9-, 10- or 11-speed bike who want to move to 1×12 while keeping their existing rear wheel (thanks to the HG-compatible cassette).
Either way, it’s a big step up in performance, silence, and reliability.
How It Compares
| Groupset | Speeds | Cassette Range | Freehub | Approx Weight | Key Strength | Typical Use |
|---|---|---|---|---|---|---|
| SRAM NX Eagle | 12 | 11-50 T | HG | ~2.2 kg | Great value & compatibility | Trail / All-Mountain |
| SRAM GX Eagle | 12 | 10-52 T | XD | ~1.9 kg | Lighter & smoother shifting | Trail / Enduro |
| Shimano Deore M6100 | 12 | 10-51 T | Micro Spline | ~2.1 kg | Superb reliability & quietness | XC / Trail |
| Shimano SLX M7100 | 12 | 10-51 T | Micro Spline | ~1.95 kg | Refined shifting & durability | Trail / Enduro |
If your wheel uses an HG body and you’re not chasing grams, NX Eagle is unbeatable for the money.
If you’re building from scratch with an XD or Micro Spline hub, GX Eagle or Deore M6100 are worth considering for lighter weight and slightly smoother shifting.
Pros and Cons
✅ Pros
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Excellent price-to-performance ratio
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Full 12-speed range (11-50T)
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Compatible with standard HG freehub
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Proven SRAM Eagle technology
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Robust and easy to maintain
⚠️ Cons
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Heavier than mid-tier systems
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Slightly less refined under heavy load
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Plastic shifter feel vs premium alloy units
- Revolutionary innovation
- Performance that is simply second to none
- Achieve the ultimate ride
- Eagle technology revolutionised the mountain bike experience by providing riders with a 1x drive solution specifically designed to be light, strong and intuitive
- With its gear ratio, it is equipped for all terrain
- The nx eagle drive is the latest addition to the eagle family and shares technologies with the drives xx1, x01 and gx, making it 100% compatible within the eagle family
- Sram eagle drives are the only 1x drive systems that have been fully developed for optimal performance
- The kit comes without dub bottom bracket. the inner bracket suitable for the frame is ordered separately
Final Verdict
The SRAM NX Eagle DUB Groupset is a top pick for riders who want modern 12-speed performance at a sensible price. It’s ideal for upgrading older trail bikes or forming the backbone of a budget-friendly custom build. Installation is straightforward with the right tools, and once dialled in, it delivers crisp, consistent shifts ride after ride.
If you value reliability, compatibility, and the trusted SRAM name, this groupset ticks all the boxes.
🚵♂️ Ready to Ride Eagle 12-Speed?
👉 Get the full SRAM NX Eagle DUB Groupset now on Amazon UK:
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