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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.
Promax C-1 chain tensioners are extruded then CNC-machined from 6061-T6 aluminum for optimal strength and low weight. When used properly, they will protect your frame dropouts and help hold your rear wheel in place
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
