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31.8 mm Black Bicycle Stems

Bar clamp diameter is the diamater of the handlebar.

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

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Showing 790 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 Everland MX/GX 40 degree Stem, 90x31.8, Black
Origin8 Everland MX/GX 40 degree Stem, 90x31.8, Black

High angle stems ideal for Monstercross or Gravel bikes equipped with off-road drop bars Raises drop bars eliminating the need for excessive … read more

15% offretail $43.99 your price $37.39 + ships free

BuyBuyPART NUM 506949
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 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
FSA K-Force OS-99 Carbon Stem 31.8x90mm
FSA K-Force OS-99 Carbon Stem 31.8x90mmFull Speed Ahead

FSA (Full Speed Ahead) K-Force Light OS-99 Stems 3D forged and CNC machined from AL-2014 UD carbon weave skin applied through CSI process … read more

your price $186.20 + ships free

BuyBuyPART NUM 159864
Promax Gryf 31.8mm MTB Stem, Length 35mm, 1-1/8" Threadless Black
Promax Gryf 31.8mm MTB Stem, Length 35mm, 1-1/8" Threadless Black

Promax Gryf Stems. Rugged, durable, dependable. The GRYF stem was designed and cold forged to hold up on any ride. City, trail, mountain. Item Specifications … read more

your price $44.99 + ships free

BuyBuyPART NUM 250229
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
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
Profile Design Aris Stem: 70MM; 65/115degree; Black; 1-1/8"; 31.8
Profile Design Aris Stem: 70MM; 65/115degree; Black; 1-1/8"; 31.8

Profile Design Aris Stems. Available for 26.0 & 31.8 3D forged 6061-T6 Aluminum Item Specifications Color: Black Intended Use: Road Steerer Tube: … read more

your price $42.00 + ships free

BuyBuyPART NUM 448740
RaceFace Atlas Stem Black 65mm x 31.8
RaceFace Atlas Stem Black 65mm x 31.8

RaceFace Atlas Stems Intended use is All Mountain, Freeride and Downhill 4-bolt bar clamp with interlocking u-shaped faceplate Opposing bolts on … read more

15% offretail $99.99 your price $84.99 + ships free

BuyBuyPART NUM 961881
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
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
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
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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Cinelli Pista 6061-T6 Stem, (31.8) 65d X 100mm - Black
Cinelli Pista 6061-T6 Stem, (31.8) 65d X 100mm - Black

Forged and machined 6061-T6 aluminum construction with 4-bolt removable faceplate Twin, opposed-direction steerer clamp bolts Matte … read more

your price $29.99

BuyBuyPART NUM 610221
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
Redshift ShockStop +30 100mm  Stem: Black
Redshift ShockStop +30 100mm 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

your price $189.99 + ships free

BuyBuyPART NUM 513672
Redshift ShockStop +/-6 deg 100mm Stem: Black
Redshift ShockStop +/-6 deg 100mm 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 5 of 5 ( 2 ) 5 of 5 stars average ( 2 reviews )

your price $189.99 + ships free

BuyBuyPART NUM 575573
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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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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Thomson

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

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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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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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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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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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Syntace

"Strong. Light. Smart."

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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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