My lil' Villiers needs a new rear chain.
125cc 9D
From previous discussions here, it needs to be a 1/2" x 3/16" x .335"
(Which is not the same as a 420 at all.)
Terriers used the same for the primary drive (clutch), but are quite short.
Renolds appear to have made this - as 110044, mostly out of stock it would seem.
Bantams used something similar - although maybe not as the .335 ??
Is Villiers Services the only source of this.
Postage is quite a chunk these days, unless something can be sourced closer to home ?
The new sprockets are strategically stamped with this 335 detail ...