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ASTM F1952 (Downhill bicycle) ASTM F1952 is a downhill helmet standard established by ASTM International (the organization formerly known as the American Society for Testing Materials)

And this apparently creates less turbulence

The system can be set to provide assist when you need it and then recharge the battery using a regenerative braking system to scrub off some speed when you are going downhill or cruising on flat ground

Built with 100% high-grade Japanese materials, this premium multifilament line delivers exceptional softness, superior flexibility, and invisible super strength, the trifecta that gives pros their edge on the water

He went on to win two more Formula One (F1) Grand Prix world championships in 1977 and 1984, the latter of which came after his remarkable comeback from a near-fatal crash at the Nrburgring German Grand Prix in 1976

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