Best Fat Bike Stems in 2026

Super Light & Anti-rust: Made of lightweight anodized aluminum, our tubeless presta valve stem is not only lightweight but also anti-rust. Stem length: 40mm, 44mm(two valve presta)

Superior Seal: With a removable valve cover, O-ring, and lock nut. The large soft rubber base can easily form an airtight seal on the valve hole with a diameter of not more than 8MM, ensuring that the nut can be tightened and protecting the rim

Removable Valve Core: The valve core is a removable cover, our valve comes standard with an integrated valve core-removable cover and two other covers as spare parts, which can help you remove the core and easily fill the sealant

★ Please confirm your bike fork diameter is 28.6mm (1-1/8") and the handlebar diameter is 31.8mm (1-1/4") before order!!!

★ The bike stem is sturdy, well designed and easily adjusted, which is preferable to removing the handlebar stem and exchanging it for one with a different angle.

★ The installation is easy because the specs were accurately represented. There is a "degree of angle" indicator on the adjacent parts to allow you to set your angel correctly. The stem has a opening that allows you to see where the handle bar is positioned.

✅ HIGH STRENGTH -- 6061 Aluminum alloy bicycle stem riser is 20% lighter than ordinary Al alloy stem extender. Solid and firm handlebar extender that is hard to loose, more safety when use. Strong in anti-corrosion and rust-free, high toughness and not deformed

✅ FUNCTIONAL GASKETS -- The bike neck extender is equipped with 4 gaskets, 3 x 10mm and 1 x 5mm, can increase the height up to 85mm. (more details refer to Figure 2)

✅ ADJUSTABLE -- The stem adaptor can adjust the gasket to fit your need freely, reducing the pressure of waist effectively, biking more relaxed

Ensure Proper Fit with The Funnduro : The Funnduro is available for handlebars with a 31.8mm or 35mm diameters. This version is 31.8mm only. Please check your handlebar before purchasing and ensure you order the correct version.

Versatile Use : A precision-engineered mountain bike stem for enduro, freeride, trail riding, XC and downhill. This is a perfect MTB stem as well as a BMX stem for riders on challenging terrain.

Tough and Light : CNC machined from high-quality aerospace 6061 alloy, Funnduro bicycle stem is featherweight but tough enough for the harshest conditions.

🚴‍♂️- Great Deal, You are looking at our new released MTB 31.8mm short Stem, made with 3D forged 6061T6 Aluminum, machined by "Double Body" processing, anodized color. It's smart, lightweight and ultra-strong, ready to Jump! A same style of Handlebar is also available;

🌟 - Light Well Build, it's a length of 35mm, 31.8mm clamp, Heigth 40mm, Steerer 28,6mm; designed for improving your riding, jumping, crossing performance and experience; Offering at just only ~143g, hold in hands to see how beautiful it is;

🎁 - Gift Options, it looks just as a beauty with excellent annodization, You may find it a gift option to your husband, wife, boyfriend, girlfriend, or gift for your kids' bike for back to school gift, Christmas gift, Valentine's day gift, Mother's day or Father's day gift, thanksGiving gift or New year gifts, for mountain bike, fat bike or e-bike;

FORGED AL-6061 - Forged from supper strong 6061-T6 aluminum to handle extreme situations and unexpected terrains

LIGHT WEIGHT - Lightweight aluminum body is bored out for weight reduction for a minimal weight just over 200g

FEATURES - 4-bolt handle bar clamp design and 2-bolt steerer tube clamp with a 0-degree stem angle and rise

Only Fit for Handlebar diameter 31.8mm (1.25''), please measure the diameter of your bandlebards before you buy it. front fork stem diameter 28.6mm (1-1/8"), Length: 90mm (center distance of the two holes).This mtb stem only fit for 31.8mm(1.25") handlebars.

Adjustable angle: 0° ~ 60°.Maximum height extension 90mm.

Weight:269g. Constructed of high-strength CNC machined 6061 T6 aluminum alloy.strong and durable.

🚲 SIZE: Stereer Tube diameter: 28.6mm (1-1 / 8"), Handlebar diameter: 31.8mm (1-1 / 4"), length: 45mm, weight: 124g

🚲 LIGHTWEIGHT: The bike stem is made of high-quality 6061 aluminum alloy, hollow design, durable

🚲 EASY INSTALLATION: just connect the original front fork stem, it is very simple

1. Maximum Height Extension: 180mm (7 inch). Include 6 gaskets, 2 x 20mm (4/5 inch), 3 x 10mm (2/5 inch) and 1 x 5mm (1/5 inch). Can freely adjust the gasket to fit your own height

2. Easy installation, just connect up the original front fork stem

3. Forged 6061 Aluminum Alloy Material with polished anodized finish, Solid, Secure, Durable.

【MATERIAL】Made of high strength Aluminum Alloy, Comes anodized in Black, Blue, Gold,Red and Silver,colorfast surface,great anti-corrosion. Beautiful Color,Stand out from the crowd.

【ADJUSTABLE】 Can freely adjust the gasket to fit your own height,Maximum Height Extension is 2.7 inch (70 mm), It helps to relieve the pressure of your shoulder and back, and bring you enjoyable and relaxed cycling experience.

【EASY INSTALLATION】Extender clamps to steerer; stem clamps to extender.

45mm Handlebar diameter 31.8mm (1-1/4"),Stereer Tube diameter: 28.6mm (1-1/8")

Lightweight MTB stem, Length: 45mm (center distance of the two holes)

Material:made of high-strength material - aluminum alloy 6061.

Please confirm your bike handlebar diameter is 31.8mm (1-1/4") and fork steerer tube diameter is 28.6mm (1-1/8") before order!!! Otherwise, the item is not suitable for your bike!

Degree: 0-60° adjustable.Not applicable to Giant bicycles.The mountain bike stem is constructed of high-strength CNC machined 6061 T6 aluminum alloy.Lightweight and Durable MTB Stem - about 280g

Use the adjustable stem to achieve a more comfortable riding position, the pain caused by the original setup in shoulders/arms/back had to be corrected. This stem and a riser handlebar did the trick, allow you to sit more upright on bike which is better for your back.

🚴‍♂️ Stem Riser: We have four sizes to choose from, 115MM(4.52 inch), include 2 Spacers, 1 x 10mm and 1 x 5mm. Choose what you want and can freely adjust the gasket to fit your own height.

🚴‍♂️ Maximum Height Extension: 70mm (2.75 inch). Lots of height adjustment depending on how many included spacers you choose to use and the length of your bikes cables.

🚴‍♂️ Easy to use, just connect up the original front fork stem. Lifts the riding position to make the cycling more comfortable.

Material: 6061 aluminum alloy

Maximum height extension: 115 mm. The handlebar riser comes with 2 spacers (1 × 5mm & 1 × 10mm)

This Bike fork stem extender can be freely to adjust the gasket to fit your height

Notice,If your handlebar diameter is 25.4mm (1 "), please select a stem with a diameter of 25.4mm (1 "). If your handlebar diameter is 31.8MM(1.25"), please select a stem with a diameter of 31.8MM(1.25")，

This SKU is used with handlebars with a diameter of 31.8MM(1.25"). If your handlebars have a diameter of 25.4MM(1"), please choose another SKU.

Material:6061 Aluminum alloy.CNC machined, forged alloy construction, high strength.

Suitable for most bike with 1-1/8'' threadless headset

SPECIFICATIONS: Maximum Height Extension: 180mm (7 inch).Include 6 gaskets, 2 x 20mm (4/5 inch), 3 x 10mm (2/5 inch) and 1 x 5mm (1/5 inch).

Easy to install on bike,Just connect the original front bicycle fork stem.

APPLICATION: The stem riser allows the handlebar to be lifted by 78mm maximum height. Hence it lifting your hands to high position and allows more comfortable upright riding position.

COMPATIBILITY: Compatible with all 1-1/8" = 28.6mm fork steerer. NOT compatible with 1" fork steerer. The maximum rising height is 78cm.

LIGHT & STRONG: The riser is made of heat treated strengthened quality aluminum 6061. It is very safe to use. Weight: 225g=0.49lbs.

For 31.8 mm Handlebars: The MTB stem is suitable for most bike with 28.6 mm (1-1/8") steered tube and 31.8 mm(1 1/4") handlebars, length is 45 mm.

Perfect for Most Bikes: Universal short bicycle handlebar stem is suitable for most road bike, mountain bike, fixed gear bicycle, MTB, BMX, DH, etc.

Allen Wrench Included: The road bike stem comes with a hex key, it is convenient for you to drive bolts on the threadless stems and the faceplate.

APPLICATION: The stem is fully adjustable from Angle: 0º to 90º with stem extension of 90mm. With its wide adjustable range, it can set up a comfortable upright or racing riding position easily.

COMPATIBILITY: The stem is compatible with 1-1/8" = 28.6mm fork steerer only. NOT compatible with 1" fork steerer. Handlebar bar bore: 31.8mm only, NOT for 25.4mm. Please check your bike fork and handlebar size before purchase.

STRONG & LIGHT: The professional level stem is made of 3D forged alloy which is much better than other alloy. Weight: 355g=0.78lbs.

Enduro Stem is made of 3D Forged high strength 6061 T6 VioGi Aluminum Alloy, heat treated and CNC hollow.Light weight: around 150g.

Angle: 0 Degree, handlebar diameter is 31.8mm(1.25”) or 35mm(1.38”),front fork stem diameter 28.6mm(1-1/8”),Length:50mm(Center distance of the two holes).

Discipline: XC AM Enduro DH,the burly 31.8 bar clamp zone is chamfered to reduce stress and increase fatigue life in handlebars.

Two Sizes Handlebar diameter : 31.8mm (1-1/4") and 25.4mm(1",With Free Bar Shim), Steerer Tube diameter: 28.6mm (1-1/8"), Stack Height:40mm,Length: 110mm (center distance of the two holes),Rise:+/-10D

Universal short Bike handle bar stem suitable for Most Road Bike, Fixed Gear Bicycle, Mountain Bike, Downhill bike, Track bike, MTB, BMX, DH, etc.

Constructed of high-strength CNC machined 6061 aluminum alloy.

【Stem size】7 Degree: 60/70/80/90/100mm; 17 Degree: 70/80/90mm; 22 Degree: 70/80/90mm Handlebar center diameter: 31.8m; Riser tube diameter: 28.6mm(1-1/8").

【Unique design】There is a scale on the front end of the mtb stem, which is convenient for the adjustment of the up and down angle, providing you with a better riding experience.

【Stem material】The mtb stem made of 6061 T6 aluminum alloy , lighter weight, better toughness, no deformation, corrosion resistance, provide security for your outdoor travel.

Maximum Height Extension: 115mm. Include 2 gaskets, 1 x 10mm (2/5 inch) and 1 x 5mm (1/5 inch). Can freely adjust the gasket to fit your own height

Easy installation, just connect up the original front fork stem

Forged 6061 Aluminum Alloy Material with polished anodized finish, Solid, Secure, Durable

Stereer Tube diameter: 28.6mm (1-1/8"), Handlebar Diameter: 31.8mm (1-1/4"), Length: 110mm, Weight: 410g, Degree: 0-90° Adjustable

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.

Maximum Height Extension: 2.7 inch (70mm), including 4 metal adjusters

Four Metal Gasket Adjusters: 3pcs 2/5 inch adjusters and 1pcs 1/5 inch adjuster, more flexible for you to raise up the fork stem

Multi Colors Available: Black, Silver, Blue, Red , Golden

Perfect Design: Bynccea Bike Stem constructed of precision 3D Forged alloy, to create the strongest, lightest, most secure bicycle adjustable stem available.

Adjustable angle: -70°~ +70°Adjustable Stem can help you raise or lower the height of the handlebar to improve your position or comfort as you ride,so as to obtain a more comfortable riding experience.

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 90mm, 110mm and 145mm.

Degree: 45°.

Handlebar diameter 31.8mm (1-1/4''), front fork diameter 28.6mm (1-1/8").

Fit for most mountain bikes, fixed gear bicycle, BMX, etc.

【Adjustable Angle ±85°】Adjust upward: Raise handlebar position. Make you bend less while riding, riding comfort and steering control. Adjust downward: Low down handlebar position, reduce wind resitance, ride faster.

【Sturdy Material】The bike stem adopts quality 3D Forged alloy, lighter weight, better toughness, no deformation, corrosion resistance.

【Compatibility】: Fit for Handlebar diameter 31.8mm (1-1/4''); Front fork stem diameter 28.6mm (1-1/8") ; Length: 90mm; Weight: 265/293g

Stereer Tube diameter: 28.6mm (1-1/8"), Handlebar Diameter: 31.8mm (1-1/4"), Length: 130mm, Weight: 310g, Degree: 0-60° Adjustable

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.

Suitable for Handlebar diameter:31.8mm.

Front fork stem diameter 28.6mm (1-1/8").

Length:32mm (center distance of the two holes).