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About MASH
MASH is a bicycle shop in San Francisco, California with a 4.9-star rating from 37 reviews. The shop operates with limited hours, opening Wednesday and Monday from 11 AM to 4 PM, and serves cyclists visiting or residing in San Francisco. Customers describe the experience as feeling more like a welcoming skate shop than a traditional bike store, with a unique walk-up Dutch door entrance displaying smaller accessories in the glass.
What distinguishes MASH from typical bicycle retailers is its curated selection of cycling apparel and accessories. The shop carries clothing including shirts, jackets, vests, sweatshirts, jerseys, and bibs, along with socks, hats, caps, gloves, and arm warmers. Accessories include bags, wallets, bells, and water bottles. Reviewers note the shop offers considerable merchandise variety despite its compact footprint, with staff providing honest advice on parts without pushing expensive alternatives.
Reviewers share specific experiences highlighting the shop's service approach. Jesse from out of town praised the welcoming atmosphere and friendly staff during a visit. Paige Turner mentioned Mike answered all her questions and resolved her needs completely. Sandy Cochrane noted the team provided good advice on parts while resisting opportunities to upsell more expensive options. Multiple reviewers describe the staff as super cool and nice, with one noting the shop maintains its hype without disappointing visitors.
What Customers Say
All eight reviewers awarded 5-star ratings, with customers specifically calling out staff members Mike and the team for helpful, non-upselling service. Reviewers describe the shop atmosphere as welcoming and compare it favorably to a skate shop rather than a traditional bike retailer.
Working Hours
| Sunday | Closed |
| Monday | 11 AM–4 PM |
| Tuesday | Closed |
| Wednesday | 11 AM–4 PM |
| Thursday | Closed |
| Friday | Closed |
| SaturdayToday | Closed |
Services
Cycling Apparel
Shirts, jackets, vests, sweatshirts, jerseys, and bibs for road and competitive cycling.
Socks, Hats & Accessories
Cycling-specific socks, hats, caps, gloves, and arm warmers for all-weather riding.
Bags & Wallets
Cyclist-focused bags, panniers, and wallets for gear transport and everyday use.
Bells & Safety Accessories
Bike bells and safety-related accessories for urban cycling.
Water Bottles & Hydration
Cycling water bottles and hydration solutions for rides.
Curated Accessories
Smaller accessories displayed in-shop with staff assistance for special orders.