While SRAM’s wireless Red eTap groupset has been around for a year now, it hasn’t been possible to fit a wide-range cassette for spinning up really tough climbs. That’s now changed with the addition of SRAM's 'WiFLi' technology, which provides a longer-arm rear derailleur and lets you fit 11-30t or 11-32t cassettes.
The SRAM Red eTap WiFLi Upgrade Kit includes a SRAM Red eTap WiFLi rear derailleur, SRAM XG-1190 11-32t cassette, and a SRAM Red 22 11-speed chain. In addition to supporting wider-range cassettes, the updated derailleur design is said to optimise the chain gap for more consistent shifting.
SRAM WiFLi compatibility
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The new WiFLi kit is designed to work with SRAM PowerGlide and PowerdomeX cassettes. The smallest cassette that it can accept is 11-26t — any smaller and you’ll need to fit the existing short-arm Red eTap derailleur. Read our review of SRAM’s Red eTap groupset for the full lowdown on how it rides.
SRAM WiFLi weight
There is a tiny, barely-there weight penalty with the WiFLi kit: the new long-arm rear derailleur weighs 243g with battery, compared to 237g (with battery) for the existing short-arm derailleur.
SRAM WiFLi pricing and availability
You can read more at BikeRadar.com
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