Dependable performance. Aimed at the serious road cyclist who wants dependable performance, R451 calipers are hard to beat. Key Features: Good value 57mm drop front calliper brake. Super SLR dual pivot design keeps operating friction to a minimum, improving braking performance. Enhanced brake arch proportions give a quicker linear response and increased power. Lightweight aluminium calliper design with tough anodised finish. Toe-in adjustable brake shoes for perfect pad alignment. Durable quick release for fast and easy wheel removal. 57mm drop. Colour: Black. Sold individually for front or rear.