Product Colors and Sizes

Adjustable Aheadset Oversize Stem

Regular price:

Sale price: Dhs. 120.00

Special product, Innovation Special product, New Release Special product, Sale End series Personalize me Eco-design Same day delivery

Designed for precisely adjusting the height of your riding position without changing the handlebar. Handlebar diameter: 31,8mm.

Adjustable stem with oversize diameter (31.8 mm) for added comfort.

Color: Choose a color

Select a size

Select the size {{ cleanSize }} before adding this product to your cart.

Sale price: Dhs. 120.00

Regular price:

Product Features

A photo of the Adjustable Aheadset Oversize Stem in use


28.6 mm (1"1/8) headset and OVERSIZE 31.8 mm (1"1/4) handlebar.

Optimised posture

60° adjustment possible for an individually adapted position.

Product Reviews

Skip to reviews AR en
690 reviews

Adjustable Aheadset Oversize Stem
Filtered by translation missing: Loading reviews…
Cycle parts

Good selection of parts in stock

icon-circle-checkmark Verified purchase
Adjustable Stem.

I bought this as I was changing my handlebars and it gives a much wider range of adjustment for comfort and positioning. A pretty descent standard of finish and quality.

icon-circle-checkmark Verified purchase
Works well :-)

Easy to fit and does exactly what I need

icon-circle-checkmark Verified purchase

After suffering with backache due to the handlebars being too low I invested in a adjustable aheadset and have been reaping the benefit since. It has made a huge difference to my riding comfort and enjoyment without having to lengthen brake and gear cables.

icon-circle-checkmark Verified purchase
Well made and easy to install

Very simple to install onto a RockRider 560. I used a 5mm hex bit and an electric screwdriver to screw to the correct torque. Well made and works great!

Not good feels unsecure

i have had nothing but problems with this stem i have torqued all the bolts to the required level but there's still a lot of movement in the stem that feels unsafe tried different angles etc but no joy so have had to take off the bike.

Hello Mark,

Sorry to hear that your experience with this product hasn't been as you'd expected. I've fitted a few of these and not had any play within the stem. I'd suggest you take the item back for a return.

Rob Basnett b'Twin Product Expert DECATHLON
handlebar extension stem

Great product and fitted by a courteous and proficient assistant.

icon-circle-checkmark Verified purchase
Useful, quality item.

I bought this adjustable stem because I've been having trouble getting down on the drops on my road bike, hardly ever used them because I find it uncomfortable, (I'm getting old!!), solved the problem with this stem, raised the bars enough to make using the drops comfortable again. Very useful item, would recommend to anyone who struggles using their drop bars.

icon-circle-checkmark Verified purchase
Great price and sturdy

I am a time trial cyclist. Getting in position is a pain the butt. Buy one of these stems and you can mess with your position until you've got what you want. Then you can buy what suits.... Word

excellent product and easy to set up

Simple to use and gives a good range of adjustment

icon-circle-checkmark Verified purchase


icon-circle-checkmark Verified purchase
Height adjustment of bars on Rockrider 5.3

Wsh decathlon offered a fixed raised stem or this as an option when buying, but I understand most MB users would want the normal stem

icon-circle-checkmark Verified purchase
Good value product: Adjustable OS Headset Stem

Inexpensive product that helped to subtly adjust my riding position to a more comfortable one. Brought the handlebars up and slightly closer to the saddle. Thanks Decathlon!

icon-circle-checkmark Verified purchase
Adjustable Aheadset Oversize Stem

Give the rider choice in regard to a more upright riding position. Most appreciated as you get older

icon-circle-checkmark Verified purchase
Adjustable MTB oversized stem

Good durable stem.Plenty of adjustment and so far has held up well including mountain bike specific trails.Before buying it, consider whether the length of your existing brake and gear cables can handle the change in angle.

icon-circle-checkmark Verified purchase
Skip to reviews

Additional Product informations



  • 100% Aluminium 6061


  • 100% Steel

Product Recently viewed


Size Guide Visual