I have a relatively ok pair of Middleburns as shown. Ideally l need some Black or silver Turbines if anyone wants a swap? Cash either way depending on what you have. I’d also buy yours too if you aren’t interested in mine.
Needs to be square taper , nice condition and ideally have matching rings
Those rs7s are compact drive. Standard drive rings are not available in smaller than 33 teeth without offset bolt holes that would render them unusable in a triple.