Teeth and chains

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Iain Treloar gets geared up to explain the secrets of chains, gears and ratios for road bikes.  Gearing has gone through a number of variations over the past 10 years. On mountain bikes: a wide spread remains king—generally a triple chainring on the front, multiplied by between 7 and 11 gears on the back. Recently, however, this has started
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SRAM WiFLi drivetrain review

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A smart and beautifully-executed wide-range gearing solution for the road: Iain Treloar reports on testing. Rating         90%  Function     38/40 Quality       38/40 Price      7/10 Appearance    7/10 Derailleur from $94.95 (Apex), $174.95 as tested (Force 22); cassette from $71.95 (Apex), $134.95 as tested (Force 22) At
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