The Sold Secure silver-rated 8mm hardened steel chain is long enough to fit around the wheel and frame and is covered by a tough nylon sleeve.
For Grainger, who had also secured silver in the quad in Sydney, the moment was one of disappointment.
He appeared to have lifted 189kg and to have secured silver but the judges ruled it out.
Jack Laugher has gained GB's 50th medal of the Rio Olympics after securing silver in the men's 3m springboard.
Four years ago Smith's score of 15.800 would have secured silver; China's Xiao Qin took the gold with only 0.075 more.
Within minutes, the Welsh swimmer Jazz Carlin had secured silver in the women's 400m freestyle to make it a truly memorable evening for British swimming.
The Latvian team is led by Martins Dukurs, the seven-times defending World Cup overall champion who has secured silver medals at the past two Olympics.
Great Britain's men won bronze in the 4x100m final and the GB women secured silver in the 4x200m at the IAAF World Relays in the Bahamas, on a night when more records tumbled and USA and Jamaica dominated.
Whitlock won gold in the pommel, while the team secured silver.
In securing silver, Cho became the first Britain to make the podium during the event.
