Flywheels

[RooKi]

So I'm replacing the clutch on a smallport 4age and was just wondering if I can install a bigport 200mm flywheel and clutch.
Thanks!

[davew7]

The crank bolt pattern is the same, but note that the RWD and FWD flywheels are different for the 4AGE.

[burcoty]

Also note that if you're installing a fwd 4age into a rwd you'll need the spigot bearing to ensure you don't bend the main shaft in your gearbox.

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[RooKi]

Ahhh I see.
Thanks guys

[Hen may possibly be a nut]

"RWD" is 200mm across the clutch friction surface.
"FWD" is 212mm.

I use the inverted commas as early FWD bigports had the 200mm "RWD" flywheel too.

Both flywheels are interchangeable. But as mentioned, you need to match the clutch to the size of flywheel. And yes, remember to use a spigot bearing if using in RWD format.

And this info is all over the internet, so a quick search should have unearthed it.