Bonneville Speedway the World of Speed, (similar to Speed Week) organized by the Utah Salt Flats Racing Association. The USFRA also meet on the first Wednesday of each month throughout the summer. In October, the Southern California Timing Association puts on World Finals, a scaled-down version of Speed Week. Each year, there are usually a few private meets that are not publicized scattered among the larger public meets. Numerous land speed records in various vehicle categories and classes have been set on the Bonneville speed way. In 1960, Mickey Thompson became the first American to break the barrier, hitting and surpassing John
Triumph Speed Four and other minor concessions to its streetfighter style; the frame and fully adjustable suspension are race-ready. The engine is a 599 cc inline-four-cylinder engine, as used in the TT600. The bike has a top speed of and a time of 4.5 seconds. "Motorcyclist" tested the 2002 Speed Four's time at 11.65 seconds @ and time at 3.71 seconds. The Speed Four was voted No.1 for handling and suspension in "Ride" magazine's 2008 Rider Power Survey. The Triumph Daytona 675 was second in the same category. Triumph UK After Sales has confirmed that 4,606 Speed Fours were produced from 2002 through