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This component is installed on EVERY professionals bike. It keeps the chain from falling in case of an over-shift. Never again drop a chain when downshifting. The concept is simple: If you overshift when going from big-to-small ring, the plastic tooth prevents the chain from coming off the small ring. Actual weights: 28.6mm: 9g, 31.8mm: 10g, 34.9mm: 11g › See more product details
This component is installed on EVERY professionals bike.
It keeps the chain from falling in case of an over-shift.
Never again drop a chain when downshifting.
The concept is simple If you overshift when going from big-to-small ring, the plastic tooth prevents the chain from coming off the small ring.
Actual weights 28.6mm 9g, 31.8mm 10g, 34.9mm 11g