Happy Stem 31.8mm

Happy Stem 31.8mm
Happy Stem 31.8mm
Happy Stem 31.8mm
Happy Stem 31.8mm

Happy Stem 31.8mm

Extension Length
Regular price $46.00
  • Free USA shipping on order subtotals over $150
  • Secure payments
  • In stock, ready to ship
  • Inventory on the way

What's with the name? It's a simple all-silver polished threadless stem with a 45 degree angle to keep your back and wallet happy. It's perfect for touring or dirt drops like our Dajia Far Bar.

It is a four-bolt face plate designed for 31.8mm bars and 1-1/8" (28.6mm) forks. You need at least 37mm of steerer tube to fit the stem. The stem has a 45-degree rise that results the vertical height of the 90 mm stem being 97 mm and 112 mm vertical height for the 110 mm stem. The design of the stem eliminates the need for a stem cap. Longer compression bolt is included. This stem will not work with the threadless stem adapter and is not to be used with carbon steerer tubes.


  • Handlebar Clamp: 31.8mm
  • Steerer Clamp: 1-1/8"
  • Steerer required: 37mm
  • Angle: +45deg
  • Weight: 203g (90mm size)
  • MTB-tested

We do offer a shim for 1" threadless forks.

Free Shipping for Retail customers with subtotals over $150: Velo Orange offers free shipping to the lower 48 States for retail orders with a subtotal of at least $150. Use the coupon code 150SHIP when you check out to get the deal.

Free Shipping for Wholesale customers with subtotals over $400: Velo Orange offers free shipping for wholesale orders to the lower 48 States with a subtotal of at least $400. No coupon code required for this deal.

Oversize international shipping: Large products including (but not limited to) frames, fork, fenders, handlebars, racks, and rims may incur oversize shipping charges. We will notify you of additional charges.

For additional info, please visit our FAQ page or contact us.

Customer Reviews

Based on 58 reviews
31.8mm Riser Stem

Works great, looks even better. Used to replace Cane Creek stem in black on Surly midnight special. The stem lifted up my bars juuuuust the right amount to make long distance riding a pleasure. I like the added attention to detail by including a rubber stopper that prevents water from sitting on the adjustment bolt's head, would love to see added protection for the 2 side clamping bolts.

Great Stem

Perfect stem for raising your bars a bit without adding a tonne of reach.

tom mccabe
It’s fucking great!

I put this on my gravel bike which had too low of a stack and it raised it up and decreased reach just the right amount. It’s a bit dorky looking but I don’t care!

Robert Smith

I wanted to raise the bar on my mtb about 2 inches above the saddle for a more upright position and the 90mm happy stem looked ideal for the job. The old stem was 90mm and 7degrees and the happy one raised the bar about 2.5 inches and back maby an inch, just what I wanted. Happy with the happy stem.

John Napolitano

Seeing this stem for the first time was a Eureka moment for aa re-constructor of road bike straight bar conversions. Finally, a way to enable an upright riding posture without violating the sleek aesthetic! Congrats to whoever dreamed this stem up and congrats to Velo-O for seeing that is was produced with such high quality and attention to detail. Well done!

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