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@Dtroll
The sa hub has a range of 256%. With 5 gears that's big jumps. Shifting isn't as smooth as the Shimano so you loose lots of momentum each time you shift. The SRAM s7 has a range of 300% and is 130oln about the same price as the sa! If the frame is steel then spreading it to 135 isn't an issue. My experience of igh's is if you need gears you need the best or you'll be disapointed. From 130 to 135 is only 5mm a couple do washers on each side of your fixed will fill the gap and shouldn't affect your chain line too much. I cold set my frame from 120 to 135 about a year ago and ride on some quite rough surfaces with no issues. Don't be afraid of changing the spacing. A frame builde charged me £30 to do mine and braze a mount for a coaster brake to the chainstay.