Sram NX Groupset 170mm Boost - The Inside Line Mountain Bike Service Ltd.

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Sram NX Groupset 170mm Boost

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Article number: GS-NX-1-A1
SKU: 00.7918.076.002

Complete NX Eagle DUB Build Kit.



  • Rear derailleur
  • Trigger shifter
  • DUB Crankset with 32t chainring
  • Chain
  • XG-1230 11-50t cassette
  • Chain gap gauge

SRAM NX Eagle DUB Boost 170mm 32t Set w/ Cassette, Shifter, Derailleur, Chain

The NX Eagle crankset delivers Eagle styling and performance to the newest addition of the Eagle ecosystem. DUB technology features a better-engineered bottom bracket and a new spindle design, which together allows for a more uniform approach to bottom bracket fitment, better sealing against contamination and forward and backward compatibility.

  • Designed for SRAM's X-Sync 2 chainrings
  • 6000 series forged aluminum arms with DUB Spindle Interface
  • 11 / 12 speed compatible
  • Direct Mount X-Sync 2 Steel Chainring included
  • Bottom bracket sold separately


Sram's engineering team has been challenging the standards of the bike industry for a while now and to fill you in on recent changes, Sram has released a new Bottom Bracket Spindle Interface. DUB. Dub has single-handedly shifted everything we know about the mechanics of Bottom Brackets and spindle sizing. To no surprise, Sram has installed DUB on the NX Eagle Crankset. That means no BB30 or GXP options as those will soon be discontinued. Moving on from the spindle diameter, we go to the chainring. The NX Eagle chainring will still feature the X-SYNC 2 chainring that has been designed around the Eagle drivetrain to work perfectly. You can still run other branded chainrings but it is highly recommended to stick with the X-SYNC 2 that is designed for this drivetrain. The Crankset is also compatible with Sram’s Direct Mount system that can be seen on all other models of Eagle Cranks. This leaves us with the crank arms themselves. These are made out of 6000 series forged aluminum and are available in 165mm, 170mm, and 175mm crank arm lengths. For weighing in at only 705g, this crank is hard to beat when it comes down to price and length options.


NX Eagle Trigger Shifter

The actual part we make contact with held true to Sram’s legacy and has a splitting image of its relative trigger shifters. At first glance, you may not even notice that it is marked as NX. This shifter can be used with every model of Eagle derailleur for a fraction of the price ($42 USD). Eagle has created what many would argue as a smoother and more precise shifting experience backed by its reliability. Even for an entry-level shifter such as the NX series, it holds true to the design. The Shifter is also available in an E-MTB specific Eagle™ shifter option limiting the pull lever to a single engagement. The Shifter is also available with the Matchmaker™ X Clamp. Keeping the weight and cost down, the NX Shifter features a plastic trigger that resembles the feel and structure of the alloy version in the higher end versions of Eagle. The Trigger shifter only weighs in at 112g!


NX Eagle Rear Derailleur 

Sram Introduces a completely new Rear derailleur that will still feature their proven 1x-specific X-HORIZON™ design to better accommodate the 11t cog featured on the new cassette. A 14-tooth lower pulley easily facilitates 11- to 50- and 10- to 50-tooth cassette capacity, and also adds to NX Eagle’s overall smooth-pedaling feeling you experience while riding. No shortcut was taken and the derailleur has been designed to match it predecessors with The Type-3 ROLLER BEARING CLUTCH™ that provides quiet, consistent performance, and durability. This NX Eagle Derailleur will also feature the notorious Cage Lock™ design Sram has become so popular for incorporating into their derailleurs. Not bad for such a cost-efficient derailleur that weighs 339g.


NX Eagle PG-1230 Cassette

Causing the biggest issue when upgrading to Eagle was the XD Freehub design. Sram has introduced the NX Eagle Cassette as being the first 12-speed cassette they have to offer that does not feature the XD Freehub. Instead, the PG-1230 will feature the standard 7/8/9/10 speed freehub body; or Shimano Freehub as many know it by. With the XD freehub body not featured, it would have been nearly impossible and almost impractical to feature a 10t small cog. Instead, the cassette will have an 11t small cog and still top out at 50t. Giving you that dinner plate that everybody loves. It won’t make you scream in terror looking at the scale either. The Cassette only weighs 615g. With the idea of E-Bikes becoming more popular, the PG-1230 Cassette was built tough and ready to take some abuse.


NX Eagle Chain

What good is a drivetrain without a chain? No good. No good at all. The NX Eagle chain is completely compatible with all other versions of Eagle and will continue to provide smooth and efficient shifting. Eagle™ PowerLock® chain connector with FLOW LINK™ technology provides better chain-guiding and increased longevity. The NX Eagle Chain only weighs 278g. Matched with an eagle Chainring, you bet this puppy will last you a while.

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