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- Rear cassette hub
- Hadley "SDH"
- Aluminum
- 8/9-speed
- 5 sealed cartridge bearings
- 10mm bolt-on axle
- 135mm width
- Titanium cassette body
- Light load full contact seals and adjustable preload cartridge bearings
- International Standard 6-bolt/44mm-BCD disc mounting dimensions
- SDH rear hub includes 4 cartridge bearings
- Titanium 8/9sp cassette body with a 72 point 4-pawl engagement system
- For ISO mount disc brakes
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