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Our on-line store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 12:00 p.m. PST. Orders in high demand will have an estimated production time listed on its product page and will ship according to the date listed.
The SHIMANO R451 caliper brake has a 57mm reach which offers increased tire clearance up to 32mm.
Providing light action & accurate brake power
SHIMANO SUPER SLR system
Adjustable toe-in brake shoes
Quick release Wider Open
57mm reach type
We are a Seattle, WA based outdoor gear store with a mission to make climbing, backpacking, skiing & mountaineering accessible and enjoyable for everyone.
© 2026, Master Store
