The 11 speed drivetrain is still on the way but SRAM makes a big step by releasing bigger ring and a bit different with their drivetrain lineup. SRAM takes different approach for their newest drivetrain. Now they use the name Eagle, rather than using X series like their all drivetrain products before. The SRAM Eagle is a 1x12 speed drivetrain and will be known as "front derailleur killer."
SRAM Eagle 1x12 Drivetrain Highlights
Available in XX1 and X01 groups
Fits existing bikes with XD drivers
New 12-speed 10-50 tooth cassette provides 500% gear range (10-12-14-16-18-21-24-28-32-36-42-50 teeth)
New direct-mount carbon crankset designs tailored to match your riding needs
New chain designed to reduce noise, friction, and wear while being stronger than ever
New X-SYNC 2 chainring is quieter and more durable
New derailleur with improved Type-3 clutch mechanism and revised B-plate for more secure mount
Meets ISO standards
Group Weights: XX1 - 1456g, X01 - 1502g including all but bottom bracket (add 60-120g)
MSRP: XX1 - $1,502 US, X01 - $1,417 US
Available June, 2016
SRAM claims that the Eagle is smoother, quiter, and more durable. Beside the chainring upgrade, SRAM also make a new updates for the chain. Even the brand says that the Eagle's chain is one of the best part of this new drivetrain. SRAM makes the new chain with new design and it makes the chain will smoother and quiter because there is no sharp edges inside. The chain also stronger as this built from flatter plates.
But surely the big attention will be on the chainring. SRAM also develops the new X-SYNC 2 tooth profile, which is different with their previous version of X-SYNC. This profile offers better performance, it can avoid the hook, reduces wear, improves retention at the same time, and able to clean up the mud. As it first appearance, the ring will be available in direct mount model. And the good news, the 1x11 SRAM component will be fit with the Eagle.
From all parts, the new Eagle rear derailleur will be there to get most people attention. It gets new design on the finishing, with the black and orange combination and a small Eagle logo along with XX1 logo. The new thing used in this RD is a Type 3 Roller Bearing Cluth mechanism which offer more consistent operation. The lower pulley also bigger with 14 tooth. The Eagle RD is also has long cage, different from any SRAM X series RD which is mostly available is short or medium option.
The Eagle's cassette will be fit perfect with 1x11 XD driver, so the fans don't have to replace their XD driver to the new driver to use the Eagle. As 12 speed, the cassette is now bigger, tooth counts are 10-12-14-16-18-21-24-28-32-36-42-50 with progressively larger 2-2-2-2-3-3-4-4-4-6-8-tooth jumps. And SRAM makes it a nice finishing with gold rings, looks very luxurious though it will be same after it brought to the track; muddy track. (pic: vitalmtb.com)
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