CXWXC Adjustable MTB Stem 31.8mm 70 Degree - 90/110/145mm Bike Stem Riser for Handlebar - Aluminum Alloy Mountain Bike Handlebar Riser Extender for MTB Road City Bike Bicycle (31.8 x 110mm)
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Availability:
20 left in stock
Arrives
Tuesday, Aug 4
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Color: B: 31.8 x 110mm
Features
- NOTE: PLEASE CONFIRM YOUR SIZE BEFORE YOUR PURCHASE. 90, 110 130 and 145mm are not the total long of the stem.
- Ideal Stem for Rider: Can't get comfortable on your bike? Tried too many bike stems? This adjustable stems are a useful way of tweaking your handlebar height and reach, particularly for touring where you spend long hours in the saddle. Our adjustable stem is the best bet to get comfortable
- Compatibility: Only Fit for Handlebar diameter 31.8mm (1-1/4''), front fork stem diameter 28.6mm (1-1/8") and is available in a range of lengths 90, 110 and 145mm.
- Material: The MTB stem is manufactured with a 3D Forged alloy construction that gives strength and control. The durability of this stem is very adjustable with an angle of (-70to +70)
- Easy to Install: Just connect up the original front fork stem. Four bolt bar clamp holds bar securely in position
- Suitable for Most Bike: Our bike stems are suited to a wide variety of bicycles, and also to the different types of riders. Ideal for MTB racing and those who take their off road biking very seriously.
Color: B 31.8 x 110mm
Item Weight: 0.33 Kilograms
Material: Aluminum
Brand: CXWXC
Product Dimensions: 1.25"W x 4.33"H
Brand Name: CXWXC
Manufacturer: CXWXC
Model Number: XT-AS822
Manufacturer Part Number: XT-AS822
Color: B 31.8 x 110mm
Material Type: Aluminum
Bike Type: Mountain Bike
Item Weight: 0.33 Kilograms
Item Dimensions W x H: 1.25"W x 4.33"H
Item Diameter: 31.8 Millimeters
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Aug 4
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: C: 31.8 x 90mm
The CXWXC Adjustable Stem (31.8 × 90mm) completely transformed my ride. Installation was quick and straightforward, and the wide adjustment range made it easy to dial in the perfect upright position. The build feels solid and secure on my e-bike—and the improvement in comfort was immediate. Wrist, elbow, and back strain are basically gone, and I finally feel relaxed and in control while riding. If you’re looking to improve comfort and posture without changing handlebars, this stem is an absolute must-buy.
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Reviewed in the United States on January 3, 2026 Reviewed in the United States on January 3, 2026 by A Harris
Color: B: 31.8 x 110mm
Works great and easy to install. Good quality, too....
Reviewed in the United States on June 2, 2026 by Todd P
Color: B: 31.8 x 110mm
Perfect for raising my handlebar to the exact right height for me. Not too heavy. Fits perfectly.
Reviewed in the United States on May 19, 2026 by jmhnet
Color: B: 31.8 x 110mm
Very well made with good range of adjustment. Not too heavy but adequately strong. Made my biking less painful. Very good buy.
Reviewed in the United States on April 16, 2026 by Nonamemarine
Color: B: 31.8 x 110mm
Got this for my Lectric X 2, to move the handle bars up and back a little bit. It was relatively easy to install with one problem. It needs a spacer for the stock handle bars to work. They did not include a spacer/adapter. I made one out of PVC pipe I found in my junk pile and it works no problem. It was my oversight. There are units with the adapter included out there. Overall a really nice upgrade I wish I had done sooner. Solves the handle bar problem with my Lectric X2.
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Reviewed in the United States on February 20, 2024 by Amazon Customer
Color: A: 31.8 x 145mm
I was nervous at 1st because I was putting this on an Ebike but it is super sturdy and strong. Haven't had ANY issues with this product! Love it!
Reviewed in the United States on March 25, 2026 by Tyler Maldonado
Color: B: 31.8 x 110mm
So a little history about me, I just turned 50, Medically Disabled from the fire Dept. Hadn't ridden a bike in 30 years. I used to race as a kid, and it's been my dream to get a bike for years. 25 years of Fire Fighting has left my body pretty tore up, and fat 340lbs. As MLK said though "I had a dream". Loose weight and eventually cycle again. I started on the recumbent stationary bike at the YMCA, and could barely pedal. I'm 100lbs down now I finally had moved to a standard seat stationary bike. I began to feel better, and I wanted a bike bad. I Could only afford an online bike, but I got the one of my dreams. Problem was I didn't even get to sit on it before I bought it. Fit was going to be an issue. My back has L5:S1 issues, and I have 0 flexibility. I need a boat load of stack. It enabled me to finally have a comfortable cockpit. The Stack is HUGE at 40 degrees, and the shortened reach which aids in the stability of my position. All for 20$. Saved me a 200$bike fit for now. It is definitely worth the money. Just look at my bike. Black/Blue color scheme, shaved out aero look. It get's me out side and riding. Can't beat that!!! As far as the dealer? Originally I received a box with someones random stem replaced and the adjustable no where to be found. Though amazon I was quickly sent a replacement that got me up and riding within the week.
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Reviewed in the United States on May 19, 2025 Reviewed in the United States on May 19, 2025 by Marty from Memphis
Color: A: 31.8 x 145mm
I recently purchased the CXWXC Adjustable MTB 31.8mm 70 Degree - 145mm stem for my Aventon Level 2, and I must say, it has been a game-changer for my riding experience. This stem fit my bike with a minor modification, making it the perfect height to raise the handlebar almost 3 inches without the need to replace any wires. The installation process was relatively straightforward, with the only hiccup being the remounting of the headlight. The CXWXC mount where the existing light mount attaches was slightly larger, requiring me to make a small adjustment. I ended up cutting one of the mounting holes off the light mount to allow it to snug up to the new stem mount. To secure everything in place, I used two of the original short bolts to attach the handlebar to the stem and one of the new long bolts to attach the light mount onto the 4th hole of the stem. Despite this minor inconvenience, the end result was well worth it. Overall, I am extremely satisfied with the CXWXC Adjustable MTB stem. It has provided me with the perfect height adjustment I needed while maintaining the integrity of my bike's existing components. If you're looking to upgrade your ride and enhance your comfort level, I highly recommend giving this stem a try.
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Reviewed in the United States on March 20, 2024 Reviewed in the United States on March 20, 2024 by Michelle F.