Cycle News - Archive Issues - 1980's

Cycle News 1983 11 02

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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Sohere's8. We drilled forpowe& Open wide and ~y ahhh. This years YZ125 and YZ250 are stronger than ever The reason is those two little lrles you see in the diagram on the left. They're sub-exhaust ports and, by drilling two of them off the main exhaust, our engineers discovered they could supply the YZS with more power where you need it most In the low and middle range. Combined with the Yamaha Power Valve System (YPVS~ a sliding valve that au1Dmatically adjusts tor low-end torque or high-end poweJ; this design gives you more efficient power production. As well as a smoother transition of that power from the bottom all the way through the top end. Last year, we ttdc the YZs down to the minimum weight limit This year, we took that low weight and redistributed it. We started by Ioweting and centering the engi. Ie, frame and maD: Then we redesigPed ewsythiDg from the hubs to the Mmoshock rear suspens1OO. The result is a line ofbikes that can take JOU fDaplace JOU've always wanted to go. Rrstplace. The newYamaba works ethic. A good, finn grip is great If you're trying to impress your girlfriend's fatheI: If you're trying to impress the competition t:Ix>ugh, this years yz grips are the way to go. They're softer and more durable than ever: So tlrty'lllast a lot longer: Am so will you 24 This year, the only difference between our works and production bikes is whO's riding them. That's because, at Yamaha, there are IX> more works bikes. .Just the most advanred line of production Imtoc:rossers ever the new YZs are as good as an}'OOe else's works bikes. No more exaISes. Am to that em, we've refined all the YZs by using stIooger materials and more advanced engineeringtedmiques.Soyoucan dial youryz in tightEr than ~ unleashed. The 1984 YlBO,VZ125, For you, that means a better chance ofbeing COfi1)etitive with 'YZ25O and Yl490. They aren't like the works the fadny riders. No more excISes. bikes. They are the \\Ub likes. For us, it means making sure

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