I bought a 81’ Yamaha SRX 440 and a 83’ Vmax 540 for 230!! YouTube

81 Yamaha Srx 440. Lake Rocket SRX 440 "Lean, Mean, Black & Evil" Yamaha Motor Corp 1981 As far as any turned in 81's according to Yamaha they were destroyed. yamaha had this stuff pretty well engineered to begin with

Yamaha SRX 440 and Yamaha Exciter 440 for Sale in Plainfield, IL OfferUp
Yamaha SRX 440 and Yamaha Exciter 440 for Sale in Plainfield, IL OfferUp from offerup.com

They didn't come on strong until about 6000 rpm and pulled like hell till about 9200 it was quite a bit faster then my srv ans about 3.

Yamaha SRX 440 and Yamaha Exciter 440 for Sale in Plainfield, IL OfferUp

YEAR: 1981 MANUFACTURER: Yamaha MODEL: SRX 440 ENGINE: SX 600 engine OWNER: Mike Nagel Slinger, WI FEATURES: Resto-mod condition: SX 600 engine and hydraulic brakes I had a 81 SRX for a couple of seasons, It had every update available done to it including being updated with a 82 SRX crank and case. Exceptional 1981 SRX 440 Amazing restoration job inside and out, truly one of a kind 440 SRX.

Yamaha Srx 440 Motorcycles for sale. The 1981 one was the first "wedge" design that was then replaced in 83 with the Vmax540LC They weren't the best trail sled because they had a higher power band

1981 81 YAMAHA SRX 440 Left & Right Cylinders w/ NEW Pistons and Head. The 81 SRX was very problematic and Yamaha even went so far as to give customers a monetairy credit if they returned it and purchased a new Vmax540LC As far as any turned in 81's according to Yamaha they were destroyed.