How do you get a sprocket off a bike?
Wrap the chain whip tool around the largest sprocket and secure it. The chain whip tool holds the cassette in place so that you can loosen the lockring. Place the sprocket removal tool around the lockring. Use a crescent wrench to turn the lockring counter-clockwise, so that you can loosen and remove it.
How do I remove a freehub body?
The axle is independent of the freehub.
- Remove set screw from side of drive side locknut.
- Hold non-drive side cone with cone wrench. Loosen and remove drive side locknut.
- Pull freehub to remove. Use care not to loose small parts. Note orientation of pawls as you remove freehub.
What size sprocket do I need BMX?
Old BMX bikes were equipped with 48T (teeth) sprockets, however this is not a standard nowadays. Most common sprocket size today is 25T or 28T with 23,7mm bore. There are two basic sprocket types – bolt drive and spline drive. Bolt drive sprocket is attached to the crank arm with the bolt.