Ack Attack

Ack Attack
Also calledTop 1 Ack Attack
ClassLand-speed record streamliner
Engine2× turbocharged 1,299 cc (79.3 cu in) inline-four
Top speed634.217 km/h (394.084 mph)[1]
PowerOver 1,000 hp (750 kW)[2]
TransmissionDual water-cooled drivechains (left and right)
Frame typeTubular steel
Wheelbase12 ft (3.7 m)
DimensionsL: 20.5 feet (6.2 m)
H: 32 in (810 mm)
Weight1,617 lb (733 kg)[2] (dry)
2,000 lb (910 kg)[3]
(including rider) (wet)
Fuel capacity4.7 US gallons (18 L; 3.9 imp gal)
Mike Akatiff with the Top 1 Ack Attack

The TOP 1 Ack Attack is a specially constructed land-speed record streamliner motorcycle that, as of March 2013, has held the record for world's fastest motorcycle since recording a two-way average speed of 605.697 km/h (376.363 mph) on September 25, 2010, in the Cook Motorsports Top Speed Shootout at Bonneville Speedway, Utah. The Ack Attack's fastest one-way speed was officially recorded at 634.217 km/h (394.084 mph). This was the third time in four years the Ack Attack had broken the motorcycle land-speed record.[1]

The record was confirmed and certified by the Federation Internationale de Motocyclisme (FIM), which is the world's leading regulatory authority for motorcycle racing.[4] The Ack Attack's record was included in the 2012 Guinness World Records.[5]

Designed and built from the ground up by Mike Akatiff, the Ack Attack's bullet-shaped chassis is made from chromoly tubing. The motorcycle streamliner is powered by two 1,299 cc (79.3 cu in) Suzuki Hayabusa engines, using a single Garrett turbocharger, intercooled with dry ice at 35 pounds per square inch (240 kPa) boost, which produce more than 900 horsepower (671.1 kW), and runs on Mickey Thompson tires.[2][3][6] While pursuing the land-speed record, the Ack Attack experienced a number of failed attempts, including runs which ended in spectacular crashes.

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