Yamaha SRX: Light Fast and Collectible: The sled that brought Yamaha to prominence and launched a virtual mythology was a 440cc lightweight racer that went on to serve as the forerunner for the Yamaha SRX.. By 1978 the SRX 440 featured a 439cc liquid-cooled twin that retailed for US$2,400. The engine that helped Yamaha dominate tracks across.. Yamaha SRX 440 Question. Jump to Latest 14K views 24 replies 8 participants last post by xc500 Jun 7, 2004. V. VernNet Discussion starter. 45 posts · Joined 2004 Add to quote; Only show this user #1 · May 30, 2004. Hello, I'm looking for a little background history on the old Yamaha SRX 440's..
1978 srx 440 how much hp? Jump to Latest. 76 srx mid to upper 80's for horsepower, 77 srx 98 h.p. give or take, 78-80 80-85 in that area, mostly around 82 h.p. Despite the fact that the 78 srx had slightly more compression it didnt yield much more hp over a 79 or an 80. Best to worst for performance, 77 then 76 then 78 and/or 79 then 80, the.. Has anybody on this forum ever owned a 1981 SRX 440(YAMAHA)? Don't want to go into such a long conversation unless somebody else has, this sled is a true "crotch rocket" of its time. RIDITLIKYUVGOT2WEX2LIV! Save Share Reply Quote Like. Sort by Oldest first Oldest first Newest first Most reactions. S. SRV540. 264 posts.