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 145mm)
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Color: A: 31.8 x 145mm
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.
Description
Bike Repair Stand, Bike Pump, Bike Helmets, Bike Tool Kit...
Color: A 31.8 x 145mm
Item Weight: 0.34 kg
Material: Aluminum
Brand: CXWXC
Product Dimensions: 1.25"W x 5.71"H
Brand Name: CXWXC
Manufacturer: CXWXC
Model Number: XT-AS822
Manufacturer Part Number: XT-AS822
Color: A 31.8 x 145mm
Material Type: Aluminum
Bike Type: Mountain Bike
Item Weight: 0.34 kg
Item Dimensions W x H: 1.25"W x 5.71"H
Item Diameter: 31.8 millimeters
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If you place your order now, the estimated arrival date for this product is:
within 30 days
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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Similar Products
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 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: A: 31.8 x 145mm
This was used to replace the bike stem on a Walmart-Branded Concord 700c Axia road bike. I replaced the stem within 10 minutes and brought it 70-degrees higher, with about a 4.5" rise. My daughter and I went out on a ride together. Well worth it! Instead of the flat stem that was too low, and too far forward, she was able to raise her seat and sit upright! She was able to enjoy the ride, without being slouched over, with the bike-stem and seat-post too low. Well worth the investment! I even took it for a spin myself!
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Reviewed in the United States on June 19, 2026 by Biggs
Color: C: 31.8 x 90mm
31.8mm X 70 fits perfectly on my Ozark Trail G1 (v2) drop bar and aluminum fork without any additional shims. Heavy stem but good quality. The easy adjustability is perfect!
Reviewed in the United States on July 24, 2026 by AbbylitiesDotCom
Color: C: 31.8 x 90mm
This adjustable stem made it easy to fine-tune my handlebar height and riding position without replacing multiple parts. The construction feels solid, and the adjustments hold securely once tightened. It adds a little extra weight compared to a fixed stem, but the versatility makes it well worth it.
Reviewed in the United States on July 20, 2026 by Dennis P.
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 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 by Michelle F.
Color: A: 31.8 x 145mm
Fits perfectly and feels really well constructed. nice finish, screws and threading aligned really well. got this for a 2021 trek FX3 to raise and extend out the handlebars for more upright riding for long rides.
Reviewed in the United States on June 15, 2026 by Chris Chandler