[AdrianB1]

Yes. The parachute has a pyrotechnic deployment mechanism that is consumed; I never saw a BRS sold in separate components, so you need to replace the entire package. The 10 year shelf life is coming from the pyrotechnic charge and the parachute material, they both age.

[fnordfnordfnord]

You can buy the components separately but they won't usually be certified so that's only useful for EAA types and people like Mike Patey.