Lol happy cutting and grinding smooth!!! Turn signals... Any aftermarket one really. Hard the say because it really depends on the look of your bike. Most of them have the same thread so really you should be able to buy whatever you'd like. If it doesn't fit just use the bolt supplied or drill out and tap the hole or again, use the bolt supplied. That said sometimes wiri can be funky due to American style wiring and Japanese style wiring.