Shimano R400 Tiagra Brake Lever rattle solved. - YouTube
Shimano BL-R400 Road Aero Brake Lever Set
I was told by more than one person that it couldn't be done without upgrading my entire braking system, but here's my 30 year old Univega Nuovo with Shimano BL-R400 brake levers!
Shimano BL-R400 Brake Levers - bike-components
Shimano Tiagra/Sora BL-R400 Road Brake Lever Set – Ride Bicycles