[shaner1100gs]

Originally Posted by mtiberio

I just picked up a Guzzi G-5 (949cc, 5 speed) that is fitted with Lester Mags. I can't see paying the weight penalty of mags, and not having them set up for tubeless.

Has anyone ever set up a late 70's early 80's set of Lester Mags for tubeless operation?

I have converted many a set of the standard Guzzi cranked spoke mags of that same era. Since the inside had no flat machined around the stem hole, I always simply tapped the hole for a 1/8 pipe thread, and fit a tank valve. Works amazingly well. I'd prefer to not tap the Lesters,

Does anyone know of a tubeless valve stem that works in the Lester Mags?

Thanks,
Mike

Here you go. https://www.denniskirk.com/parts-unl....prd/54155.sku

I think I used these on my Lesters on my 77 R100S.

Shane