Joined: Jun 2005
Posts: 9,625
Likes: 40
From: South of Raleigh, North of New Hill, East of Harris Lake, NC
Bikes: Specialized Tarmac, Specialized Roubaix, Giant OCR-C, Specialized Stumpjumper FSR, Stumpjumper Comp, 88 & 92Nishiki Ariel, 87 Centurion Ironman, 92 Paramount, 84 Nishiki Medalist
The main spring action to return a brake lever is the spring in the brake itself. BTW, installing aero levers is a very good move. Not only does the bike look better, but the aero levers provide better mechanical advantage, much safer. Consider replacing the cables as well to provide smoother action.
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