Rennen Sprockets are machined from aircraft quality 7075-T6 aluminum making them 83% stronger than 6061.
With the internal threads being part of the chainring you will never have to use a chainring wrench again!
Rennen Sprockets are machined from aircraft quality 7075-T6 aluminum making them 83% stronger than 6061.
With the internal threads being part of the chainring you will never have to use a chainring wrench again!
