The grips are suitable for the standardised handlebar diameter (outer diameter) 22.2mm.

I bought the Slender a long time ago and they are exactly the same length. But there was a variant with unequal length to compensate when using SRAM twist shifters.

According to our information, this is the 130 mm variant. :)

For spare parts, I would send an email directly to the customer service.

The manufacturer doesn't seem to give any information on this and unfortunately I didn't find any other precise answers to your question. I assume, however, that this should be possible. If not, you should be able to return the item if necessary.

hello melanieabt, the ends are shiny chrome