Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
Yes Ash, they fit all the Honda SOHC fours, 350/400/500/550/750, in my poverty stricken youth we would use whatever was the cheapest at the time, and never had any issues. Our local dealer had purchased a job lot of genuine Honda from a bankrupt dealer abroad somewhere, and didn't realise they fitted all the bikes at the time, so I made a cheeky offer of 50p a set for what were listed as 350four points. We convinced him he would never sell them otherwise as that bike was never sold in the U.K. so we got a good deal for 15 full sets, plus 4 extra right hand sets (cyl 2&3) for £17. Wish I hadn't sold them all off now with the cost of genuine these days>