St1 yoshimura cams in 1200 bandit

[Rob1200]

Planning on st1 yoshimura cams in my 1200 bandit also porting and light skim of the head. Question is will i need better valve springs? If so will ape heavy duty ones be ok? 

[Jaydee]

What the application, drag or road?

I used normal oem valve springs with my Yoshi stage 1's as I wanted durability as it's a road bike. Most aftermarket hi lift vavle springs have less coils on their springs to prevent valves binding and need a lot more pressure to compress. That's perfect for short bursts on drag strip but after any real milage you could be looking at broken springs or if they hold out, really worn cam profiles and/or cam followers.

[Rob1200]

Just for road use mate. Thank you for the quick answer!