As of June 2009 In pure stock form, that is right off the showroom floor with NOTHING being added to it, with acceleration and top speed that beats out the best competition, the Polaris Outlaw 525 IRS is the fastest ATV on the market. As far as purpose built machines go : Built by Turbosmart's Puerto Rican Distributor - TurboTech - the "Spiderman" quad uses a turbocharged 1000cc Yamaha RX1 snow mobile engine. Utilising Garrett GT3071R turbo with Turbosmart Ultra-Gate, Race Port BOV, FPR-1200 fuel pressure regulator and an e-Boost2 boost controller, the "Spiderman" quad pumps out 450hp and flies past the 1/8 mile market in just 5.0 seconds! Current Guinness Record holder The highest speed on a quad bike (ATV) is 249.51 km/h (155.04 mph) achieved by Terry Wilmeth (USA) onboard the AlbaAction/Fullbore/Powroll Rocket Raptor version 5.0 at the Madras Airport, Madras, Oregon, USA on 16 June 2007.
The fastest stock, production atv is either the Yamaha 350 Banshee or the Suzuki Quadzilla but this is highly debated. Modified or custom atv's can go faster.
the fastest stock 450 ATV is the ds 450 by can-am.
rocket raptor holds the world speed record
the fastest racing ATV is the Polaris Outlaw 525, It goes 50 MPH. , SORRY. THE YAMAHA 700 RAPTOR IS THE FASTEST ATV OUT IVE RIDDEN BOTH AND THE RAPTOR IS FASTER new answer:i think the fastest three wheeler is the Yamaha z 250 im not sure what the top speed is but its the fastest thing ive ever drove
no not the fastest but it is a fast reptile
fastest in the world
the world's fastest speed boat is the spirit of australia
Light
The Greyhound is the fast dog in the world
1000kph
Shohaib Akter is the world fastest bowler.
Raptor700