No, but then they are inexpensive. More importantly, the slides and bodies lasted longer with anodized slide when the bodies were still Zn. The AL bodies of Premier carbs with those slides last even longer. Also, I never found a worn-out anodized slide.
The old un-anodized slides lasted around 1/3-1/2 the life of the bodies. When I still sold on eBay my biggest sellers were AMAL major repair kits + slides. Back then a pair of them was over 1/2 the price of a pair of non-Premier carbs so I started recommending replacing the carbs - putting all those new parts in worn bodies was making little sense to me. It's more confusing now with all the AMAL price increases on Premier carbs sets.
Since, in the US at least, I the majority of riders don't do a lot of miles so I think it makes sense to change old carbs to Premier and possibly never need any new carbs/carb parts other than possibly a needle and needle jet somewhere down the road.
Yes, I know some ride a lot. I've bought over 40 Nortons and Triumphs since 2013 and one had 29k miles, one had 13k miles, some had no speedo, and the rest had under 10k miles.
Finally, other carbs also have parts that need to be replaced over time including the needles and jets an in the case of Mikuni and AMAL MK2, the cold start plunger.
