CeramicSpeed's,
. . . DrivEn pinion-style shaft-drive system, achieved a
. . . 99% efficient multi-speed drivetrain,
. . . while eliminating the chain and complex rear derailleur.
7-10-2018 Source: World’s most efficient #bicycle drivetrain Winner of the 2018 Eurobike Award
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World’s most efficient #bicycle drivetrain
Started by eds, Jul 10 2018 11:22 AM
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