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Amazon.com : SHIMANO R451 Rear Mid- Reach Road Caliper, Black : Bike Brake Calipers : Sports & Outdoors
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shimano - Modern long reach calipers on old bike, strong enough for safe braking from the hoods? - Bicycles Stack Exchange
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Amazon.com : SHIMANO R451 Rear Mid- Reach Road Caliper, Black : Bike Brake Calipers : Sports & Outdoors
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