Cycle News - Archive Issues - 1980's

Cycle News 1980 03 19

Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles

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WHYWI: Dlorn An AS The MX Open Class is getting to be very open. Every year, engines grow another size and the war seems to be on to see who can build theirs biggest. Can-Am doesn't play the displacement game. Because displacement doesn't win motocrosses, performance docs. And performance we're not short of. Last year, our 370 didn't hqYt:' any trouble knocking off their giants. And if the giants are a little bigger this season, well, we admit it, so are we. We've gone all the way to 399 cc. But oh what that 399 cc can do! By increasing the stroke and redesigning the transfer ports and reed port, we've not only increased rear wheel .VJI"" horsepower to 43, but brought it in lower down the rev range for fatter torque output and an easier-to-ride powerband. .Engine output isn't the only way we've found to help you drop your lap times. Suspension improvements include new magnesium Marzocchi internals for betterchatterbump performance, an equalizer tube that evens out .$ fork pressures, and ...your choice ofS &W shocks or remote reservoir Ohlins at the back end. And there's a trick new intake system that uses the frame backbone as a ram _---1 o 00 0') tube and lets us completely seal the seat for more rear suspension without raising seat height. The Open Class, like any other motocross, is won on the track, not on paper. That's why we built our new MX-6 as a 400. When you're on a Can-Am, you don't need 500 to beat 500. [u]ill rn/tDrn® 0 ';BIJ-dRl eTrJdclllark 01 Bumhardier Limiu.·'l". • 5

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