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Btwin Universal Stem and Handlebar Adapters
Universal stem adapters to adjust the size of the fork steerer from 1" to 1"1/8 and increasing the handlebar from a diameter of 25.4 to 31.8 mm (oversize).
Free shipping over $35
Final Sale: No returns or exchanges
See our return rules
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features

Compatibility
Grey ring for the steerer and black ring for the handlebar
Product Customer Reviews

Does what it says on the box
Just the thing to fit a modern 1 1/8" stem (e.g. for oversize 31.8mm handlebars) with the quill stem adapter. Didn't need the handlebar shim
I have raised the height of the handlebar precisely to he desired height using the stem and the adaptor(black bush). Great stuff from Decathalon - Thanks I have countered my back problem after PRECISELY raising the height of the handle bar of my BTWIN RICK RIDER.
Доволен
O.k. zu gutem Preis.
Bin zufrieden
Cumple lo que promete
Utilizado para aumentar el ancho del tubo de dirección de la horquilla y asà poder añadir un elevador de potencia. Usado en una Rockrider 300.
AdaptaciĂłn para e cambio d potencia perfecto
Se adapta perfectamente a las medidas y tiene buena sujecciĂłn
CumpliĂł perfectamente su funciĂłn. AdaptĂł un tallo de manillar de 25,4 a una potencia que superior. Muy contentos.
Genial, cambiĂ© la potencia de mĂ bici y el manillar quedaba flojo...., con el adaptador perfecto y eso q me dijeron q no servĂa....
Me atendió un vendedor que me supo ayudar muy bien, ya que después de explicar mi problema al tener una bici antigua y necesitar una potencia más corta, me ofreció la posibilidad del adaptador para una potencia de las modernas, al ser estás más anchas. El adaptador perfecto y de fácil montaje.-
Compre una potencia demasiado ancha para el manillar y gracias a este producto pude ajustarlo perfectamente. SĂłlo me hizo falta el adaptador del manillar. El adaptador de la potencia lo guardo por si acaso.
Funciona a la perfecciĂłn
Additional Product Information
Composition
Bottle/Body
- 100% Aluminum
Origin
Imported
Superior quality. Unbeatable prices.
For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.
Decathlon makes the difference
-
Research and development
delivers high-quality cost-effective products
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State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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Minimal retail footprint
lowers overhead and indirect costs

Btwin Universal Stem and Handlebar Adapters
Your location: City, ST
Please enter a valid city with state or zipcode. Example: San Francisco, CA or 94101
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
