Any question answered...

52 / 36 semi compact rings from praxis would get you close. I thought you could replace the spider on the SISL cranks, independently of the other components - might be the way to go.

Praxis haven't OKed their chainrings with RED22, so I'll hold off for a bit. It makes me initially think 'it's a fucking chainring, it will work', but I'll leave it to Praxis themselves to decide that.

Can't be arsed to check from the phone, but you can check for yourself whether Stronglight CT2 comes in that fitment. Xxcycle in France is usually the best place to get them. As previously noted, though, a spider swap is the way to go.

Stronglight do them, aye. Thanks Testbro.

Yep - just change the spider. Plenty of people out there who'd swap a 130 for a 110. Spiders from the original SI cranks will fit, too, so there should be plenty around. I picked up a complete set - 2 road and 2 MTB from ebay for less than £100.

Or SRM / P2M etc.

Or SpiderRing.

Top answer, ta!