The Yamaha YZ125 is a motocross racing motorcycle with a two-stroke 124.9 cc (7.62 cu in) displacement single-cylinder engine made by Yamaha since 1974. It is available to the public. For the first two years it was made with dual rear shocks, then changing to a monoshock. [3]

Nov 1, 2013 · I own 2- '84 YZ 125's that I ride regularly. They don't have much power, mostly midrange..... the bottom doesn't pull great and there really is no top. I added Boyesen dual stage power reeds and one of mine is bored .060 with a wiseco piston kit.

Mar 7, 2012 · I just bought a 1984 Yamaha yz 125. I already disassembled the bike and now planing on the restoration. Does anyone have some tips for upgrades on the Bike? is there anything I should change or upgrade?

Sep 5, 2014 · Chassis / suspension wise, the 83-84 was an improvement over the 82. Unfortunately, the engine package for the 83-85 YZ125 was sad. Yamaha small bores always...

Feb 27, 2016 · I had an 84 black and yellow 125, and a red and white 86 yz-125, 2 different animals!

Browse our extensive inventory of new and used 1976-1984 Yamaha Yz motorcycles from local Yamaha dealers and private sellers. Compare prices, models, trims, options and specifications between different Yamaha motorcycles on Cycle Trader. 2007 HARLEY-DAVIDSON SOFTAIL FAT BOY, FINANCING AVAILABLE OAC. TRADES WELCOME. GET …

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Please consult your owner's manual to confirm manufacturer specs. 7am to 7pm Monday through Friday, 8am to 4pm Saturday MountainTime.

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Research 1984 Yamaha YZ125L - 123cc standard equipment and specifications at J.D. Power.