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Black 31.8 mm Available Bicycle Stems

We define color as the main color of the item. It may have accents or highlights in other colors.

Bar clamp diameter is the diamater of the handlebar.

These models are available for online purchasing and can be shipped directly to you.

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Showing 551 products:

Renthal Duo Stem: 50mm 100d AluGold/Black 31.8
Renthal Duo Stem: 50mm 100d AluGold/Black 31.8

CNC machined from 6082 T6 aluminium alloy U-shape cradle clamp eliminates handlebar stress risers found with traditional stems Made in Cheshire … read more

StarStarStarStarStar 4 of 5 ( 2 ) 4 of 5 stars average ( 2 reviews )

your price $132.95 + ships free

BuyBuyPART NUM 235686
Origin8 Pro-Fit MTB Quill Stem
Origin8 Pro-Fit MTB Quill Stem

Forged AL6061-T6 alloy construction 31.8mm clamp diameter 4-bolt faceplate 180mm long quill Matte finish with laser etched … read more

StarStarStarStarStar 5 of 5 ( 1 ) 5 of 5 stars ( 1 review )

15% offretail $39.99 your price $33.99

BuyBuyPART NUM 612721
Gusset S2 AM Stem, 31.8 x 30mm, 1-1/8", Black
Gusset S2 AM Stem, 31.8 x 30mm, 1-1/8", Black

BTI Part Number: GU-6526 Vendor Part Number: ASGU2A23K Steerer Diameter: 1-1/8" Bar Diameter: 31.8 Rise: 0 Degrees … read more

your price $99.00 + ships free

BuyBuyPART NUM 335355
Ritchey RL-1 4-Axis Stem (31.8mm Clamp, 120mm), Black
Ritchey RL-1 4-Axis Stem (31.8mm Clamp, 120mm), BlackRitchey

With its unique faceplate design, the Ritchey 4-Axis stem was a game-changer when it was first released many years ago. Today, the OE 4-Axis-44 stem … read more

your price $29.95

BuyBuyPART NUM 819073
Ritchey RL-1 4-Axis Stem (31.8mm Clamp, 110mm), Black
Ritchey RL-1 4-Axis Stem (31.8mm Clamp, 110mm), BlackRitchey

With its unique faceplate design, the Ritchey 4-Axis stem was a game-changer when it was first released many years ago. Today, the OE 4-Axis-44 stem … read more

your price $29.95

BuyBuyPART NUM 141134
Ritchey WCS C220 Stem - 90mm, 31.8mm, -6 Degree, Aluminum, Matte Black
Ritchey WCS C220 Stem - 90mm, 31.8mm, -6 Degree, Aluminum, Matte BlackRitchey

The WCS C220 stem is easy to install and remove thanks to a press-fit handlebar clamp interface and forward-facing hardware. Bolt forces are aligned … read more

your price $109.95 + ships free

BuyBuyPART NUM 509818
MSW 17 Stem: 110mm 31.8 x 17d, 1-1/8, Black
MSW 17 Stem: 110mm 31.8 x 17d, 1-1/8, Black

MSW 17 degree stems raise the bar--literally--for what riders can expect from an inexpensive stem. Available in lengths from 60-120mm for custom-fitting. … read more

your price $36.99 + ships free

BuyBuyPART NUM 729879
Promax Gent 31.8mm Stem, Length 60mm, 1-1/8" Threadless Black
Promax Gent 31.8mm Stem, Length 60mm, 1-1/8" Threadless Black

Promax Gent Stem Item Specifications Bar Clamp Diameter (mm): 31.8 Color: Black Length: 60 Material: Aluminum S.H.I.S. Stem Clamp Diameter: 28.6 … read more

your price $31.99 + ships free

BuyBuyPART NUM 535439
Thomson X4 Mountain 31.8 130mm 90 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 130mm 90 Degrees Black 1-1/8" Threadless StemThomson

Thomson X4 Mountain Stems feature smooth edges for carbon bar compatibility and use bolts that are custom heat treated with corrosion preventative plating. … read more

StarStarStarStarStar 4 of 5 ( 2 ) 4 of 5 stars average ( 2 reviews )

your price $114.95 + ships free

BuyBuyPART NUM 724444
FSA Afterburner Stem, (31.8) 78/12d X 70mm - Black
FSA Afterburner Stem, (31.8) 78/12d X 70mm - BlackFull Speed Ahead

3D forged, CNC machined 6061 aluminum CrMo hardware. 4-bolt alloy faceplate. 2-bolt steerer clamp Two tone black graphics on ±12 deg … read more

your price $80.00 + ships free

BuyBuyPART NUM 981412
Box One Front Load Stem, 48mm x 31.8mm x 28.6mm, Black
Box One Front Load Stem, 48mm x 31.8mm x 28.6mm, Black

Traditional front loading style BMX stems with a 31.8mm clamp, compatible with MTB and oversized BMX handlebars Constructed from 6061-T6 … read more

your price $69.99 + ships free

BuyBuyPART NUM 697072
Genetic Juzzi 2-Axis Adjustable Road Stem, (31.8) 120mm
Genetic Juzzi 2-Axis Adjustable Road Stem, (31.8) 120mm

Adjustable 7050 alloy road stem 2-axis pivoting system for setting ideal rise and reach Item Specifications steerer dia.: 1-1/8" … read more

14% offretail $69.95 your price $59.99 + ships free

BuyBuyPART NUM 671000
Ritchey WCS C220 Stem - 120mm, 31.8mm, -6 Degree, Aluminum, Matte Black
Ritchey WCS C220 Stem - 120mm, 31.8mm, -6 Degree, Aluminum, Matte BlackRitchey

The WCS C220 stem is easy to install and remove thanks to a press-fit handlebar clamp interface and forward-facing hardware. Bolt forces are aligned … read more

your price $109.95 + ships free

BuyBuyPART NUM 376377
ProTaper Stem 31.8 x 30mm, 28.6, Stealth Black
ProTaper Stem 31.8 x 30mm, 28.6, Stealth Black

3D forged and machined 6061 alloy construction A2 stainless Torx bolts Item Specifications steerer dia.: 1-1/8" bar dia.: 31.8mm … read more

your price $104.99 + ships free

BuyBuyPART NUM 590926
Ritchey C-260 Superlogic Carbon Stem
Ritchey C-260 Superlogic Carbon StemRitchey

Ritchey Stems Matte UD carbon Stack: 42mm Item Specifications Color: Black Weight: 125g Intended Use: Road Bar Clamp Diameter: 31.8mm Stem … read more

your price $249.95 + ships free

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Kalloy Uno Upshot Stem, (31.8) 35d X 110mm Black
Kalloy Uno Upshot Stem, (31.8) 35d X 110mm Black

Lightweight high rise 2D forged aluminum stem for comfort 4-bolt windowed faceplate, 40mm tall steerer clamp. Approximate weight: 160g … read more

your price $13.99

BuyBuyPART NUM 801402
Paul Components Boxcar Stem - 31.8 x 70mm,  Black
Paul Components Boxcar Stem - 31.8 x 70mm, Black

The perfect combination of stiffness and strength at a reasonable weight Made with US sourced 2024 aircraft alloy All screws are high … read more

your price $147.50 + ships free

BuyBuyPART NUM 437421
Ritchey Comp 4-Axis Stem - 60 mm, 31.8 Clamp, +30, 1 1/8", Alloy, Black
Ritchey Comp 4-Axis Stem - 60 mm, 31.8 Clamp, +30, 1 1/8", Alloy, BlackRitchey

Proven time after time to be a reliable, easily adjustable system that continues to outperform the competition, the 4-Axis stem is a sure fire go to for … read more

StarStarStarStarStar 5 of 5 ( 4 ) 5 of 5 stars average ( 4 reviews )

your price $49.95 + ships free

BuyBuyPART NUM 960951
Cirrus Cycles Kinekt Suspension Stem - 100, 31.8 Clamp, +30, 1-1/8", Alloy, Black
Cirrus Cycles Kinekt Suspension Stem - 100, 31.8 Clamp, +30, 1-1/8", Alloy, Black

The Kinekt Suspension Stem is designed to reduce arm, wrist, and shoulder discomfort. Adjustable, Compact, and built to last. Significantly reduces … read more

your price $189.95 + ships free

BuyBuyPART NUM 631002
Redshift ShockStop +/-6 deg 90mm Stem: Black
Redshift ShockStop +/-6 deg 90mm Stem: Black

An adjustable stiffness suspension stem that smooths out the ride by reducing the affects of impacts and road vibrations. Unwanted vertical movement … read more

StarStarStarStarStar 4 of 5 ( 1 ) 4 of 5 stars ( 1 review )

your price $189.99 + ships free

BuyBuyPART NUM 863400
Ritchey

"Ritchey bicycle components have been raced to victory in some of the biggest cycling competitions in the world including the UCI World Championships, the Tour de France and the Olympics and it all began in a simple garage in Menlo Park, California with Tom Ritchey.'

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Thomson

Thomson is leading with innovative design for two primary markets - aerospace and cycling.

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Full Speed Ahead

"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."

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Dimension

Dimension makes quality components to repair or custom-fit the vast majority of bikes being ridden today, and provide the accessories that make them fun to ride.

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Salsa

"At Salsa, we believe a sense of adventure makes life better. The bicycle can be so much more than just a bike; it's a path to new places, new people, and amazing experiences."

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Whisky Parts Co.

"Whisky Parts Co. makes high quality carbon components designed with unique features that help you do more with your bike and stand out from the rest. We believe that our work can help every rider find a new level of confidence and performance with our sturdy and lightweight forks, bars, rims and more. So whether you are building a new bike or upgrading one you already have, you'll find an uncommon attention to detail in every product we offer."

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Industry Nine

"Industry Nine hubs are handmade in Asheville, NC"

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Cane Creek

"The world's best choose Cane Creek. A key element of Cane Creek's mission is to support the sport of cycling, including racing, charitable activities and cycling advocacy. Cane Creek believes strongly in the power of bicycles and their potential to effect positive change in our society. To that end, Cane Creek supports athletes and teams whose purpose encompasses more than competitive racing, such as getting more people on bikes, improving or promoting a healthy lifestyle, and making our world better through the use of a bike."

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Sunlite

"Every year bikes change, styles and trends evolve, old bikes are in need of repairs and new bikes are waiting for that personal touch. We provide the means to keep your bike on the road and fun to ride!"

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Kind Shock

Kind Shock is an industry leader in suspension and dropper seat posts.

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We define color as the main color of the item. It may have accents or highlights in other colors.

These products are one of our best sellers.

In Store products are available to view in our showroom. In Store orders usually ship the same or next business day.

These models are available for online purchasing and can be shipped directly to you.

Bar clamp diameter is the diamater of the handlebar.

Stem length is measured from the center of one clamp to the center of the other clamp. This measurement is sometimes known as the reach or extension.

S.H.I.S clamp diameter is the steerer tube diameter.

Stem angles are measured perpendicular to the clamp. For example, a 90 degree stem is straight. Sometimes, this may also be refered to as a 0 degree stem. If two measurements are listed, the stem can be flipped for angling up or down.

Stem Type

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