Sram MTB Chain PC GX Eagle 12-Speed 126 Links

Product Information

a) If we have sent you the incorrect bicycle, we will cover the cost of collection and delivery of the correct model. GX Eagle is a step above NX but needs an SRAM specific XD driver for the rear hub (Image credit: SRAM) SRAM GX There are other reasons you might mix and match, too. If you were only able to get parts from one drivetrain because of shortages or location. Grab whatever you can and it will work. If you already have an Eagle drivetrain you could upgrade to electronic with the GX Eagle AXS upgrade kit to keep things as low cost as possible. How often should I clean my bike? Regular cleaning ensures that your material lasts longer and that you can enjoy your cycling for longer. How often you need to clean depends on the weather conditions in which you ride. Do you cycle through all kinds of weather, or do you only go out when the sun is shining? It all affects the degree of wear and tear and some people will have to clean their bikes more often than others. Use the schedule below as a guide: That still leaves the question... what's the real difference? Realistically, it's pretty subtle and it comes down to weight, precision, and price. The weight of GX Eagle groupset is 1,130g total, while the NX Eagle is 1,337g. Along with that weight drop, there are tighter tolerances as you move up the groupset line-up. The difference as you move up more becomes more pronounced, but at this level, it's hard to actually tell the difference.

This chain comes with a missing link as standard. The use of this missing link makes it very easy to assemble the chain, but is also ideal if you want to thoroughly clean your bike. To open and close this missing link you need Missing Link pliers, you can find them here. The new rear derailleur will work with both the 10-50t and 10-52t cassettes Russell Burton / Immediate Media While I’ve tested the alloy crankset here (which hasn’t structurally changed), there is now a new carbon GX option available too, but both feature SRAM’s new two-tone anodised chainring, a treatment said to better improve durability. 2021 SRAM GX Eagle 12-speed groupset performance When you buy a chain it is always too long, which means it always needs to be cut to length. To adjust the chain to the correct length it has to be broken, this is done with a chain punch. Our chain punches can be found here. Make sure you choose a chain tool for the right speed. User tips

Eagle™ technology provides an expanded, optimum, gear range making you fast on the flats, giving you control on the climbs and unleashing your speed on the descents. The Eagle chain has been completely re-engineered, and is produced with new manufacturing technology. Ultra-smooth chain inner-plates are completely devoid of square edges, resulting in a chain that engages the cassette and chainring with far less friction, for quieter performance and better wear life. The design allows a narrower overall profile that can withstand greater angles, and also allows for a flatter outer-plate, which means more consistent chain riveting and enhanced overall strength.

KMC designs are solid, but they're always 2nd fiddle to the chains natively designed to be optimized within their "ecosystem" (e.g. SRAM Eagle chain with SRAM Eagle drivetrain). Only Eagle™ is a complete system-engineered drivetrain designed, tested and proven to deliver the lightest, highest-performing, most durable system for all riders on any trail. If you're the type that wears chains out, I'd go with the X01 Eagle chain, since its hard chrome tech lengthens chain life enough to be worth the extra cost. Alternatively, if you want cutting edge, go KMC DLC. But it’s not all about the cassette because SRAM has revamped the rear mech too. The new GX mech gets a revised pulley wheel offset, a shorter cage and lengthened parallelogram along with new spring and pivot hardware, all of which help increase chain wrap which should help boost cassette and chain life as well as improve shift feel. Just like with NX, you've got options besides the mechanical GX Eagle at the same level of componentry. What's different is that now there are quite a few more options. Instead of either Eagle or not, meaning 1x11 or 1x12, you get options for GX Eagle, GX, GX DH and GX AXS. The latest GX incarnation, Eagle Transmission, is not compatible with the older GX systems though.Only Eagle is a complete system-engineered drivetrain designed, tested and proven to deliver the lightest, highest-performing, most durable system for all riders on any trail. Eagle technology provides an expanded, optimum, gear range making you fast on the flats, giving you control on the climbs and unleashing your speed on the descents. Compatible with all levels of Eagle drivetrain systems. Accurate setup using the new chain gap tool (which you’ll need to set the b-tension screw) is rewarded on the trail with smooth, quiet shifting. It feels crisp and positive too, and I’ve only had to tweak gear cable tension to adjust the indexing to keep things running smoothly.

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11 Speed

As laid out above, the most obvious difference is the cassette and by extension the derailleur that goes with it. Even that isn't as straightforward as it would seem though. All the Eagle drivetrains are cross-compatible. That means if you wanted to spec the GX Eagle but had wheels that couldn't upgrade to the XD freehub you could do it by just using the NX cassette. Alternatively, if you wanted more range all you need to grab is the GX cassette and derailleur.

At the NX level that cassette uses a HG-type freehub. That's a Shimano standard brought over from older drivetrains. If you are upgrading from 11-speed, you don't need new wheels – everything will fit and you can move from 11- to 12-speed.And now a new carbon-fibre GX crankset is also available with both the carbon and unchanged alloy versions getting new anodised chainrings. 2021 SRAM GX Eagle 12-speed groupset details