About
Useful, characterful objects for everyday city rides.
STEMMA is a New York studio making playful, useful accessories for city and folding bikes. We start small: one product line at a time, made in small batches and tested on real rides.
Made from what we pass on a ride.
Traffic cones, corner-store snacks, street signs — Bike Buddy borrows the small details of New York rides and puts them on your handlebar. We sell where we ride: bike markets, group rides, and local shops.
How Originals get made
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Prototype
Each style starts as a 3D model and a stack of printed test shells.
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Small-batch build
Shells are printed, assembled with the light core, and packed by hand in New York.
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Street testing
We bring every batch to real rides and markets and fold the feedback into the next run.
Originals now. Selects next.
STEMMA Originals are products we design and develop ourselves — Bike Buddy is the first line. STEMMA Selects is what comes next: a small, curated collection of third-party bike products we believe in for the U.S. market. Selects is not live yet; when it is, every product will carry its maker's name clearly.