| Also known as | 7028+.020 |
| Listed in parts books | Not catalogued by year yet |
RING SET B50 +.020 HASTIN
Piston ring set for the BSA B50, +.020 oversize, Hastings brand.
This is a piston ring set for the BSA B50, sized at +.020 over standard bore. The description ties it to a Hastings ring set, which is a common brand for oversize replacement rings on rebuilt cylinders. It's cataloged under BSA-specific numbering, not Triumph, so if you're working on a BSA B50 rebuild and your bore has been taken out to +.020, this is the ring set that matches.
Read more
We don't have much more detail on this one beyond the basic listing. It's a BSA part, not a Triumph part, despite showing up in a mixed inventory system that sometimes tags things oddly by supplier code.
If you're not sure your cylinder was bored to +.020 exactly, measure before you order — ring sets are cut to a specific oversize and won't work if the bore doesn't match. Call the shop and we'll help confirm before you commit to this one.
Sorry if we got something wrong here. If you think this information isn't correct, .