The Shimano Tiagra R451 Dual Pivot Brake Caliper is designed for bicycles with mudguard fitting. The caliper has a 57mm arm and Super SLR dual pivot design keeping friction to a minimum, improving braking performance. Enhanced brake arch proportions give a quicker linear response and increased power.

• Material: aluminium
• Designed for use with ST-4600, ST-4603, ST-5700, ST-5703, ST-6700 or ST-7900 STIs for correct leverage ratio
• Toe-in adjustable brake shoes