MenuMenuModern Bike

Black 31.8 mm 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.

SortSort

Showing 878 products:

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 ( 1 ) 5 of 5 stars ( 1 review )

your price $33.95 + ships free

BuyBuyPART NUM 960951
Origin8 Flow 3D MTB Stem, 35x31.8x28.6 0d, Black
Origin8 Flow 3D MTB Stem, 35x31.8x28.6 0d, Black

3D forged AL6061-T6 alloy construction 40mm stack height 4 bolt front loading faceplate design ISO-Mountain safety certification … read more

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

15% offretail $34.99 your price $29.75

BuyBuyPART NUM 354468
Salsa Guide Stem 90mm 31.8 +/-6 degree Black
Salsa Guide Stem 90mm 31.8 +/-6 degree BlackSalsa

The Guide Stem is lightweight, reliable, and provides excellent steering response on the road or trail. Bead-blasted, then anodized, finish … read more

your price $40.00 + ships free

BuyBuyPART NUM 333149
Ritchey Comp 4-Axis Stem - 60 mm, 31.8 Clamp, +/-6, 1 1/8", Alloy, Black
Ritchey Comp 4-Axis Stem - 60 mm, 31.8 Clamp, +/-6, 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

your price $34.95 + ships free

BuyBuyPART NUM 110255
FSA V-Drive MTB Stem, 60mm, +/-17, 31.8, Black
FSA V-Drive MTB Stem, 60mm, +/-17, 31.8, BlackFull Speed Ahead

3D forged and CNC machined AL6061/T6 4-bolt cold-forged alloy faceplate Chromoly hardware 40mm fork clamp stack height … read more

your price $31.99

BuyBuyPART NUM 958238
Ritchey Adjustable 4-Axis Stem
Ritchey Adjustable 4-Axis StemRitchey

+/-55 degree range of height adjustability Stainless bar and stem clamp bolts Item Specifications Weight: 270 Bar … read more

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

your price $42.95 + ships free

ChooseChoose
Salsa Guide Stem 65/115 31.8
Salsa Guide Stem 65/115 31.8Salsa

Salsa Guide Stems. The Guide Stem is lightweight, durable, and provides excellent steering response on the road or trail. 3D-forged for increased … read more

StarStarStarStarStar 4.9 of 5 ( 15 ) 4.9 of 5 stars average ( 15 reviews )

your price $40.00 + ships free

ChooseChoose
Origin8 Pro Fit Alloy Ergo Stem, 100x31.8, 17d, Black
Origin8 Pro Fit Alloy Ergo Stem, 100x31.8, 17d, Black

3D forged AL6061-T6 alloy construction 4-bolt, 2-piece faceplate design Road or Mountain compatible ISO-Mountain safety certified … read more

15% offretail $34.99 your price $29.75

BuyBuyPART NUM 430371
Ritchey Trail Stem: 60mm, +/- 0, 31.8, 1-1/8, Black
Ritchey Trail Stem: 60mm, +/- 0, 31.8, 1-1/8, BlackRitchey

3D forged 2014 alloy C220 with forward facing bolt design for easy installation 220 degree, extra-wide bar clamp improves stiffness … read more

your price $33.95 + ships free

BuyBuyPART NUM 881314
Reverse 20 Degree Stem, 31.8 x 90mm, Black
Reverse 20 Degree Stem, 31.8 x 90mm, Black

Lightweight 3D forged aluminum for XC use High rise for ergonomic positioning 135g Item Specifications steerer dia.: … read more

your price $54.99

BuyBuyPART NUM 857453
Ritchey WCS C-220 Stem, (31.8) 73dx70 Matte Black
Ritchey WCS C-220 Stem, (31.8) 73dx70 Matte BlackRitchey

Patented 220-degree 4-bolt bar clamp reduces weight, increases stiffness and distributes stress more evenly 3-D net forged and internally … read more

your price $89.95 + ships free

BuyBuyPART NUM 488928
Chromag HiFi V2 Stem, (31.8) 0d X 31mm - Black
Chromag HiFi V2 Stem, (31.8) 0d X 31mm - Black

Light, yet extremely strong Enduro and Freeride stem Structurally optimized CNC machined 6061-T6 aluminum 4-bolt face plate, 2-bolt … read more

10% offretail $99.00 your price $89.10 + ships free

BuyBuyPART NUM 670130
Origin8 Flow Stem, 70x31.8x28.6, +7d, Black
Origin8 Flow Stem, 70x31.8x28.6, +7d, Black

Road or Mountain compatible 3D forged AL6061-T6 alloy construction 40mm stack height 4-bolt front loading one-piece faceplate … read more

15% offretail $34.99 your price $29.75

BuyBuyPART NUM 604123
Ritchey Superlogic C260 84D Stem - 120mm, 31.8mm, -6 Degree, Carbon, Black
Ritchey Superlogic C260 84D Stem - 120mm, 31.8mm, -6 Degree, Carbon, BlackRitchey

The Ritchey Superlogic C260 Carbon Stem adds uses high modulus carbon fiber, increased boom diameter and a wider clamp. Item Specifications … read more

your price $269.95 + ships free

BuyBuyPART NUM 194926
Zipp Service Course Road Stem: 120mm; 73/107; 31.8
Zipp Service Course Road Stem: 120mm; 73/107; 31.8

Zipp Speed Weaponry Stems Forged AL-7050 Item Specifications Color: Black Weight: 130g Intended Use: Road Bar Clamp Diameter: 31.8mm Stem Angle: … read more

34% offretail $76.00 your price $50.49 + ships free

BuyBuyPART NUM 858440
Thomson X4 Mountain 31.8 130mm 100 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 130mm 100 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 ( 1 ) 4 of 5 stars ( 1 review )

your price $114.95 + ships free

BuyBuyPART NUM 623442
FSA Omega Stem 31.8 84/96 100mm Black
FSA Omega Stem 31.8 84/96 100mm BlackFull Speed Ahead

FSA Omega Stem Item Specifications Color: Black Length: 100 Bar Clamp Diameter: 31.8 Stem Angle: 84 S.H.I.S. Stem Clamp Diameter: 28.6 … read more

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

your price $29.99

BuyBuyPART NUM 989122
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 $269.95 + ships free

ChooseChoose
FSA SL-K Drop Stem, (31.8) -20d X 70mm - Black
FSA SL-K Drop Stem, (31.8) -20d X 70mm - BlackFull Speed Ahead

Flat head stem with aggressive drop of -20 degrees for 27.5", 29" and TT bike bike set-ups 3D forged then CNC machined from AL7075/T73 with … read more

$16 offretail $124.99 your price $108.99 + ships free

BuyBuyPART NUM 415936
Syntace Flatforce Stem 44mm Black
Syntace Flatforce Stem 44mm BlackSyntace

Syntace Stems Super-low handlebar position solution for unique fit requirements Steerer height is 27mm for all Flatforce stems Bar clamp face width … read more

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

$11 offretail $119.00 your price $107.10 + ships free

BuyBuyPART NUM 410655
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.'

See all Ritchey

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."

See all Salsa

Full Speed Ahead

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

See all Full Speed Ahead

Thomson

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

See all Thomson

Syntace

"Strong. Light. Smart."

See all Syntace

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.

See all Dimension

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."

See all Whisky Parts Co.

Kind Shock

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

See all Kind Shock

fizik

fi'zi:k is a racing brand. It represents beauty, speed, passion, freedom for those who race against each other, race against the clock and for enthusiast cyclists around the world who identify with the feeling of the fire of competition.

See all fizik

Industry Nine

"Industry Nine hubs are handmade in Asheville, NC"

See all Industry Nine

Atomlab

"Built for Race"

See all Atomlab

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!"

See all Sunlite

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

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

This is the part number or identifier for this item from the manufacturer

Our Lowest Price - This product is ineligible for additional discounts or rebates.

Buy this product and your entire order ships for free.

Some orders are inelligible for delivery discounts. See offer details for disqualifying products and destinations.