Clip-on extensions don't get much more basic than these ones from Token, but then the price is pretty stripped-down too. While really cheap bars tend to use a one-piece U-bend extension, the Tokens get separate shallow S-bend extensions with laser-etched length markers to allow synced set-up.
They’re not slotted for gear cable routing but the chunky two-piece, front-bolted clamps keep them secure on rough roads. The extensions sit above the bars, which adds some height, but there are no height spacers.
Relatively small curved oval arm rests with removable EVA pads offer four possible settings for slight adjustability. They’re sweaty though, and the tight curve may feel restrictive to some riders. The simplicity of these clip-ons means weight is impressively low, and the price is equally friendly.