Speed is an amusement ride design produced by the Dutch company KMG.

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It is commonly referred to as KMG Booster, due to its similarity with the Fabbri Booster ride.^{[citation needed]}

It has become an extremely common ride on European travelling funfairs, particularly in the UK. This is due to a combination of the ride's spectacular visual impact, and its highly practical operation. The ride can be transported on only one trailer, and requires just three hours to build up.^[1]

The ride is primarily a 37-metre arm, connected midway to the main support of the ride. Two sets of two seats are mounted at the end of each arm, back to back. Each four-seat assembly can swing through 360 degrees.^[1]

The arm rotates at up to 13 revolutions per minute, producing an acceleration of 3.5 g on the riders.^[1]