Amazon.com : 20 Pieces Bike Bicycle Bottom Bracket Spacer 7 8 9 10 11 Speed Cassette CNC Aluminum Alloy Flywheel Hub Washer Flywheel Hub Spacer 1 mm 1.5 mm 2 mm 2.5
What's a sensible way to put a 1x11 or similar onto 1990s MTB wheels? Do I want a totally new wheel, a hub body transplant, or just a 11 speed cassette? (135mm