The Best 45 Degree Stem of 2025 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best 45 Degree Stem of 2025. Check our ranking below.
2,809 Reviews Scanned
Rank No. #1
Azarxis Bike Stem 31.8mm 45 Degree 90mm Lightweight Bicycle Short Handlebar Stem Riser Suitable for BMX MTB Road Bike Mountain Bike (31.8 x 90mm)
- Fits Most Standard Bikes: Compatible with 28.6mm (1-1/8") steerer tubes and 31.8mm (1-1/4") handlebars. Available in 90mm length with an adjustable angle from 0° to 45°, making it ideal for customizing your riding position
- Durable and Lightweight Design: Crafted from high-strength 6061 T6 aviation aluminum alloy, this stem offers the perfect balance of strength and low weight—built to last without weighing you down
- Secure and Stable Connection: Features a four-bolt bar clamp that firmly holds your handlebar in place, ensuring a solid and reliable ride
- Quick and Simple Installation: Installs easily by connecting to your bike’s original front fork stem — no complicated tools or steps required
- Versatile Fit for Most Bikes: Perfect for road bikes, mountain bikes, track bikes, MTB, BMX, downhill bikes, and more
Rank No. #2
Bike Stem 31.8mm 35 Degree 110mm FOMTOR Light Weight MTB Stem Handlebar Stem Riser for Road Bike Mountain Bike BMX MTB (110mm)
- !!! NOTE (very important) : This mountin bike mtb stem ONLY fit for 31.8mm handlebar! Other handlebar is NOT applicable！Handlebar diameter 31.8mm (1.25''), front fork stem diameter 28.6mm (1-1/8"), Length: 110mm (center distance of the two holes)
- Angle: 35 degree. Help to up or down the heigth of handlebar.
- Light weight and durable, Weight Only166g (0.38lb).
- Constructed of high-strength CNC machined 6061 T6 aluminum alloy.
- Suitable for most road bike, mountain bikes, track bike, MTB, BMX, DH, etc.
Rank No. #3
TRIWONDER 31.8 Bike Stem 45 Degree 90mm Bicycle Handlebar Stem Riser Bar Clamp MTB Stem for Road Bike Mountain Bike BMX
- ▶ Handlebar diameter 31.8mm (1.25''), front fork stem diameter 28.6mm (1-1/8"), Length: 90mm (center distance of the two holes)
- ▶ Angle: +/- 45 degree. Help to up or down the heigth of handlebar
- ▶ Light weight and durable. Weight: 238g(0.5lb)
- ▶ Constructed of high-strength CNC machined 6061 T6 aluminum alloy
- ▶ Suitable for most road bike, mountain bikes, track bike, MTB, BMX, DH, etc
Rank No. #4
MTB Stem 45 Degree 31.8 90mm Bike Stem Wake Mountain Bike Stem Short Handlebar Stem Riser for Most Bicycle, Road Bike, MTB, BMX, Fixie Gear, Cycling (Aluminum Alloy, Black)
- Stereer Tube diameter: 28.6mm (1-1/8"), Handlebar diameter: 31.8mm (1-1/4"), Length: 90mm, Weight: 230g
- Hollow design, Light weight
- Four bolt bar clamp holds bar securely in position.
- Easy installation, just connect up the original front fork stem.
- Universal short handle bar stem suitable for most road bike, fixed gear bicycle, mountain bikes, etc
Rank No. #5
MTB Stem Mountain Bike Stem 31.8 50mm 30 Degree Short Handlebar Stem for Most Bicycle, Fixed Gear, Road Bike, Downhill Bike, Track Bike, MTB, BMX, Cycling
- Stereer Tube diameter: 28.6mm (1-1/8"), Handlebar Diameter: 31.8mm (1-1/4"), Length: 50mm, Weight: 220g, Degree: 30°
- Easy installation, just connect up the original front fork stem. Four bolt bar clamp holds bar securely in position
- Constructed of high-strength CNC machined 6061 T6 aluminum alloy.
- Universal short handle bar stem suitable for most road bike, fixed gear bicycle, mountain bikes, downhill bike, track bike, MTB, BMX, DH, etc.
- Suitable for modified, DIY, upgrade the bike. Downhill, Chongshan, climbing, with them very comfortable.
Rank No. #6
Bike Stem 31.8mm 45 Degree 90mm FOMTOR Bicycle Handlebar Stem Riser MTB Stem Suitable for Mountain Bike Road Bike BMX MTB (31.8 x 90mm)
- Fit for bike handlebar diameter 31.8mm (1.25''), front fork stem diameter 28.6mm (1-1/8"), Length: 90mm (center distance of the two holes)
- Light Weight: Only 205g. Constructed of high-strength CNC machined 6061 T6 aluminum alloy.
- Angle: +/- 45 degree. help to up or down the heigth of bicycle handlebar.
- Easy installation, just connect up the original front fork stem. Four bolt bar clamp holds bar securely in position
- Suitable for most road bike, mountain bikes, track bike, MTB, BMX, etc.This 45 degree stem is only suitable for front fork stem diameter 28.6mm and the handlebar diameter 31.8mm.Please confirm the diameter of your handlebar is 31.8mm before you buy it.
Rank No. #7
CYSKY Bike Stem 31.8 60mm/70mm/90mm/110mm 35 Degree MTB Stem Mountain Bike Stem Riser Handlebar Stem for Most Road Bike Stem, MTB Stem, BMX Stem, Bicycle Stem (60mm)
- 【31.8mm Bike Stem】Handlebar diameter 31.8mm (1-1/4"), Front fork stem diameter 28.6mm (1-1/8")
- 【Angle】35 degree, Length: 60mm (center distance of the two holes), Weight: 122g (0.27 lb)
- 【Quality material】Constructed of high-strength 6061 T6 aluminum alloy, anti-corrosion, anti-rust, and oxidation resistance, strong and sturdy
- 【Easy Installstion】Easy to install stem, just connect up the front fork stem, four bolt bar clamp holds bar securely in position, After installing, feel at ease and won’t tire out arms/shoulders/back
- 【Wide Application】The short handlebar stem, Suitable for most road bikes, mountain bikes, downhill bikes, track bikes, MTB, BMX, DH and so on. Perfect for modifying, DIY and upgrading your bike. Good replacement for your mountain bike
Rank No. #8
CYSKY 31.8 Bike Stem 7 Degree 45mm MTB Stem Handlebar Riser Extender for Road Bike, Mountain Bike, MTB, BMX, Cycling (45mm)
- Angle: +/- 7 Degree, Handlebar Diameter: 31.8mm (1-1/4"), fork diameter is 28.6mm (1-1/8")
- Weight: 100g (0.22lb), Length: 45mm, This bicycle stem is Lightweight and sturdy, Reduce weight while maintaining strength
- The use of sandblasting technology, frosted texture makes the product non-slip wear-resistant and more beautiful
- Constructed of high-strength 6061 T6 aluminum alloy, anti-corrosion, anti-rust, and oxidation resistance, strong and sturdy
- Easy to install, just connect up the original front fork. Four bolt bar clamp holds handlebar securely.
Rank No. #9
31.8mm Stem Alunimium Alloy Tube Stem Replacement for Mountain Road 45 Degree Adjustable
- PREMIUM MATERIAL: The stem adopts quality aluminium alloy, high strength and anti deformation.
- EXQUISITE WORKMANSHIP: CNC processing and anodization treatment ensure sleek and colorfast and great anti feature.
- SIMPLE TO INSTALL: Easy to install on stem and firmly connect handlebar.
- FIT FOR: Suitable for front fork diameter 28.6mm, handlebar diameter 31.8mm. Good replacement for your mountain bike.
- GUARANTEE: If you are not satisfied with our product you received, you can send emails to us at any time. We will reply you instantly and help you solve your problem.
Rank No. #10
GEWAGE Bike Bicycle Stem - -65 ~ +45 Degree Adjustable Bike Stem- 140mm Bike Stem Riser for 31.8(1-1/4") Handlebars- Aluminum Alloy Mountain Bike Handlebar Riser Extender for Mountain Road City Bike
- 【Compatibility 31.8 Handlebar & 28.6mm Tube】- This bike stem is custom made for your bike and designed to meet the needs of most bikes on the market. Bicycle handlebar risers are compatible with 28.6mm (1-1/8") diameter fork tubes and 31.8mm (1-1/4") diameter handlebars and is available in a range of lengths – 110, 125 and 145mm. PLEASE MEASURE THE SIZE OF YOUR BIKE ACCURATELY BEFORE PURCHASING.
- 【Aluminium Alloy Material】- The adjustable bike stem manufactured with a 3D Forged aluminum alloy construction that gives strength and control. The surface of the bicycle handlebar risers uses the frosted process. The hexagonal hole design makes the split body fully conform to the structure, greatly increasing wear resistance and reducing noise. Which can bring maximum safety to your driving.
- 【Ergonomic Design for Your Riding Health】- The bicycle stem riser can provide a maximum angle adjustment of -75-+50 Degree and precise scale, so you can freely adjust the handlebar height you want and change the riding style to relieve the waist pain, neck pain caused by improper handlebar height , inability to straighten your back and alleviate other health problems.
- 【Ideal Stem for Rider】- The bicycle stem is the best choice for all types of riders. Whether your teenager's physical growth leads to a need for height adjustable bars, or you are looking for a healthier ride, or you are a mountain bike or road bike enthusiast, you can rest assured that our adjustable stems can meet your various needs.
- 【Easy Assembly, Quick and Convenient】- The assembly process of the 31.8 stem is simple and quick. You can adjust the handlebar angle anytime, anywhere with the included hex bolts. When assembling, please carefully check whether the screws are tightened to avoid safety problems caused by loose screws.
Last update on 2026-04-15 / Affiliate links / Images from Amazon Product Advertising API
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- Brand Value: Every brand of 45 Degree Stem has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
- Features: What bells and whistles matter for an 45 Degree Stem?
- Specifications: How powerful they are can be measured.
- Product Value: This simply is how much bang for the buck you get from your 45 Degree Stem.
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- Product Quality: You don’t always get what you pay for with an 45 Degree Stem, sometimes less, and sometimes more.
- Product Reliability: How sturdy and durable an 45 Degree Stem is should be an indication of how long it will work out for you.
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