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31.8 mm Bicycle Stems

Bar clamp diameter is the diamater of the handlebar.

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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 $44.95

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 Comp 4-Axis Stem - 110 mm, 31.8 Clamp, +30, 1 1/8", Alloy, Black
Ritchey Comp 4-Axis Stem - 110 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

your price $44.95

BuyBuyPART NUM 917853
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 $54.95

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Dimension Threadless Stem: 70mm; 125 Degree; 31.8; Silver
Dimension Threadless Stem: 70mm; 125 Degree; 31.8; SilverDimension

Dimension 31.8 Road Stems are fully forged 6061-T6 aluminum stems that have a 4-bolt handlebar clamp. 31.8mm can be used with 26.0 bars with additional … read more

StarStarStarStarStar 4.8 of 5 ( 19 ) 4.8 of 5 stars average ( 19 reviews )

your price $35.00 + ships free

BuyBuyPART NUM 811671
Renthal Apex Stem: 31.8, 1-1/8, 31mm Reach, +/- 6 degree
Renthal Apex Stem: 31.8, 1-1/8, 31mm Reach, +/- 6 degree

Renthal Apex Stems. The Renthal Apex combines All Mountain strength, Enduro stiffness and XC lightweight that makes this stem the perfect choice for any … read more

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

$8 offretail $99.95 your price $91.84 + ships free

BuyBuyPART NUM 111506
Origin8 Pro Fit Threadless Stem, 110 x 31.8, +/-6d, Black
Origin8 Pro Fit Threadless Stem, 110 x 31.8, +/-6d, Black

Available in a variety of lengths, angles, and bar bores for the perfect fit Road or Mountain compatible 3D forged AL6061-T6 alloy … read more

your price $34.79

BuyBuyPART NUM 144045
Dimension Threadless Stem: 110mm; 125 Degree; 31.8; Silver
Dimension Threadless Stem: 110mm; 125 Degree; 31.8; SilverDimension

Dimension 31.8 Road Stems are fully forged 6061-T6 aluminum stems that have a 4-bolt handlebar clamp. 31.8mm can be used with 26.0 bars with additional … read more

StarStarStarStarStar 4.8 of 5 ( 19 ) 4.8 of 5 stars average ( 19 reviews )

your price $35.00 + ships free

BuyBuyPART NUM 956053
Cinelli Graphis Alloy Stem, 31.8 x 120mm, 82d, Black
Cinelli Graphis Alloy Stem, 31.8 x 120mm, 82d, Black

Hyperlight design for maximized strength-to-weight ratio 3D-forged and machined 7050-T6 aluminum with a 4-bolt 6061 alloy faceplate … read more

your price $69.99

BuyBuyPART NUM 465701
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
Paul Components Boxcar Stem (31.8) 15d X 90mm - Silver
Paul Components Boxcar Stem (31.8) 15d X 90mm - Silver

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

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

your price $123.00 + ships free

BuyBuyPART NUM 337356
Ritchey Classic C220 Stem: 80mm, +/- 6, 31.8, 1-1/8, HP Silver
Ritchey Classic C220 Stem: 80mm, +/- 6, 31.8, 1-1/8, HP SilverRitchey

C220 with forward facing bolt design for easy installation Coated chromoly hardware Item Specifications Color: Silver Weight: 115 … read more

your price $59.95 + ships free

BuyBuyPART NUM 779732
Industry Nine A318 Stem, 31.8 x 50mm, +/-5d, Turquoise
Industry Nine A318 Stem, 31.8 x 50mm, +/-5d, TurquoiseIndustry Nine

7075 domestically sourced aluminum is machined, anodized and assembled in North Carolina 180 degree clamp wrap with high strength 316 stainless … read more

your price $145.00 + ships free

BuyBuyPART NUM 159408
Velo Orange Cigne Stem, 31.8 x145 x 90mm, High Polish Silver
Velo Orange Cigne Stem, 31.8 x145 x 90mm, High Polish Silver

Enables handlebars to be placed in a higher position without the use of a ton of spacers Functions as both a stem and top cap. Star nut should … read more

your price $95.00 + ships free

BuyBuyPART NUM 552502
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
Origin8 Pro Fit Threadless Stem, 70 x 31.8, +/-6d, Silver
Origin8 Pro Fit Threadless Stem, 70 x 31.8, +/-6d, Silver

Available in a variety of lengths, angles, and bar bores for the perfect fit Road or Mountain compatible 3D forged AL6061-T6 alloy … read more

your price $36.79

BuyBuyPART NUM 671030
Thomson X4 Mountain 31.8 100mm 90 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 100mm 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 ( 1 ) 4 of 5 stars ( 1 review )

your price $114.95 + ships free

BuyBuyPART NUM 428098
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 WCS C220 Stem - 110mm, 31.8mm, -6 Degree, Aluminum, Matte Black
Ritchey WCS C220 Stem - 110mm, 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 $89.95 + ships free

BuyBuyPART NUM 134352
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
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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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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Thomson

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

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Syntace

"Strong. Light. Smart."

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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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Kind Shock

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

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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.

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Atomlab

"Built for Race"

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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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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

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