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Pirelli launches $37 SmarTUBE lightweight inner tubes

Pirelli's new $1 p/gram inner tubes are said to be 70% lighter and 50% more compact than traditional butyl tubes.

The post Pirelli launches $37 SmarTUBE lightweight inner tubes appeared first on CyclingTips.

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A sub-4 kg road bike for everyday use? Berk Composites says so

Is this the lightest practical "every day" road bike ever made?

The post A sub-4 kg road bike for everyday use? Berk Composites says so appeared first on CyclingTips.

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