Playful utility for city bikes.Playful utility for city bikes

Small bike objects for city rides.

Bike Buddy Cone mounted on a bicycle handlebar with STEMMA accessoriesBike Buddy Cone mounted on a bicycle handlebar with STEMMA accessories

STEMMA is a New York studio making small-batch bike accessories — designed, assembled, and packed in NYC.

SHOP MEET BIKE BUDDY
#AssembledinNYC#Smallbatch
  • Bike Buddy prototypes mounted on a bicycle handlebar at an outdoor market
  • Bike Buddy Cone mounted on a bicycle handlebar
  • Bike Buddy Burger mounted on a city bicycle
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First product line

Bike Buddy — a glowing sidekick for your ride.

Small city characters that mount to your bike and light up. Mount once, snap in a buddy, swap styles whenever. Decorative bike accessory with glow — not a certified safety light.

MEET BIKE BUDDY

Shop Bike Buddy

Designed and made in New York.

Out in the city

Made to meet real riders.

We bring Bike Buddy prototypes, packaging, and small-batch ideas into the city, listen to riders, and use that feedback to shape what comes next.