Season 1 Episodes13
Cast1

Mark Tewksbury
Narrator (voice)
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Ranked #13 of 13 in Season 1•−0.4 vs season avg
Expanded foam and protective shells are combined into bicycle helmets, aluminum is extracted and processed into usable metal, friction components and hydraulic parts become automotive braking systems, and precisely layered materials are assembled into rechargeable lithium-ion batteries.

Mark Tewksbury
Narrator (voice)
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"Bicycle Helmets, Aluminum, Automotive Brakes, Lithium-Ion Batteries" is episode 13 of How It's Made season 1. It scored 7.1/10 from 50 votes, ranking #13 of 13 episodes this season (season average 7.5). It aired on March 31, 2001.