9-Tooth Single Speed Flywheel for 412 Folding Bike

Details

• Upgrades your folding bike drivetrain with a 9-tooth single-speed gear mechanism, delivering steady power transmission, smooth pedalling performance, and reliable rotation for daily commuting.
• Crafted from a combination of aluminium alloy and steel, offering a strong yet lightweight structure that withstands regular road wear while keeping your bicycle light and portable.
• Specifically designed to fit 412 type folding bicycles with M35*1.25-30 teeth mounting specifications and dual 10mm and 12mm aperture options for accurate frame and hub integration.
• Features two Palin sealed bearings and a 3-pawl hook spring system to for ensure balanced rotational efficiency, prompt gear engagement, and reduced internal friction during ride acceleration.
• for Ideal for folding bike maintenance, single-speed conversions, and component replacements, helping cyclists keep their urban folding bicycles running efficiently on daily road trips.