JAE Grip Spacers/Larger palm swell?

[Winny94]

I watched a video on a JAE chassis and the person referenced grip spacers and larger palm swell inserts - is that something that exists? Where?

Thanks

 

[B-P-UU]

There are spacers you can add to the bottom of the grip (between the grip and grip cap).. making it taller. Nothing to add girth to the palm swell though.