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31.8- mm 90 deg Bicycle Stems

Bar clamp diameter is the diamater of the handlebar.

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.

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Showing 191 products:

Atomlab Pimplite Stem, 31.8 x 38mm, 1-1/8", Black
Atomlab Pimplite Stem, 31.8 x 38mm, 1-1/8", BlackAtomlab

Super light and beautifully CNC machined 6061 aluminum with oversized clamp. 142g Item Specifications steerer dia.: 1-1/8" bar dia.: 31.8mm … read more

Currently Sold Out

22% offretail $75.55 your price $58.99

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Atomlab Pimplite Stem, 31.8 x 53mm, 1-1/8", Black
Atomlab Pimplite Stem, 31.8 x 53mm, 1-1/8", BlackAtomlab

Super light and beautifully CNC machined 6061 aluminum with oversized clamp. 142g Item Specifications steerer dia.: 1-1/8" bar dia.: 31.8mm … read more

Currently Sold Out

your price $75.55

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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
Box One Front Load Stem, 48mm x 31.8mm x 28.6mm, Silver
Box One Front Load Stem, 48mm x 31.8mm x 28.6mm, Silver

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 549097
Box One Front Load Stem, 53mm x 31.8mm x 28.6, Silver
Box One Front Load Stem, 53mm x 31.8mm x 28.6, Silver

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 833510
Box One Front Load Stem, 53mm x 31.8mm x 28.6mm, Black
Box One Front Load Stem, 53mm 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

Currently Sold Out

your price $69.99 + ships free

InfoInfo
Box One Top Load Stem, 48mm x 31.8mm x 28.6, Silver
Box One Top Load Stem, 48mm x 31.8mm x 28.6, Silver

45 degree top loading design with a 31.8mm clamp for use with any standard MTB bar and over sized BMX bars Constructed from 6061-T6 aluminum … read more

your price $69.99 + ships free

BuyBuyPART NUM 669628
Box One Top Load Stem, 48mm x 31.8mm x 28.6mm, Black
Box One Top Load Stem, 48mm x 31.8mm x 28.6mm, Black

45 degree top loading design with a 31.8mm clamp for use with any standard MTB bar and over sized BMX bars Constructed from 6061-T6 aluminum … read more

your price $69.99 + ships free

BuyBuyPART NUM 792765
Box One Top Load Stem, 48mm x 31.8mm x 28.6mm, Blue
Box One Top Load Stem, 48mm x 31.8mm x 28.6mm, Blue

45 degree top loading design with a 31.8mm clamp for use with any standard MTB bar and over sized BMX bars Constructed from 6061-T6 aluminum … read more

your price $69.99 + ships free

BuyBuyPART NUM 206793
Box One Top Load Stem, 53mm x 31.8mm x 28.6mm, Black
Box One Top Load Stem, 53mm x 31.8mm x 28.6mm, Black

45 degree top loading design with a 31.8mm clamp for use with any standard MTB bar and over sized BMX bars Constructed from 6061-T6 aluminum … read more

Currently Sold Out

your price $69.99 + ships free

InfoInfo
Box One Top Load Stem, 53mm x 31.8mm x 28.6mm, Blue
Box One Top Load Stem, 53mm x 31.8mm x 28.6mm, Blue

45 degree top loading design with a 31.8mm clamp for use with any standard MTB bar and over sized BMX bars Constructed from 6061-T6 aluminum … read more

your price $69.99 + ships free

BuyBuyPART NUM 742140
Box One Top Load Stem, 53mm x 31.8mm x 28.6mm, Red
Box One Top Load Stem, 53mm x 31.8mm x 28.6mm, Red

45 degree top loading design with a 31.8mm clamp for use with any standard MTB bar and over sized BMX bars Constructed from 6061-T6 aluminum … read more

your price $69.99 + ships free

BuyBuyPART NUM 576594
Box One Top Load Stem, 53mm x 31.8mm x 28.6mm, Silver
Box One Top Load Stem, 53mm x 31.8mm x 28.6mm, Silver

45 degree top loading design with a 31.8mm clamp for use with any standard MTB bar and over sized BMX bars Constructed from 6061-T6 aluminum … read more

Currently Sold Out

your price $69.99 + ships free

InfoInfo
Box One Top Load Stem, 60mm x 31.8mm x 28.6, Black
Box One Top Load Stem, 60mm x 31.8mm x 28.6, Black

45 degree top loading design with a 31.8mm clamp for use with any standard MTB bar and over sized BMX bars Constructed from 6061-T6 aluminum … read more

StarStarStarStarStar 5 of 5 ( 1 ) 5 of 5 stars ( 1 review )
Currently Sold Out

your price $69.99 + ships free

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Chromag Hifi V2 Stem Diameter: 31.8mm x  31mm. Red
Chromag Hifi V2 Stem Diameter: 31.8mm x 31mm. Red

Contoured surfaces for human contact and structural optimization High polished finish Low stack height Weight: 195g … read more

Currently Sold Out

your price $94.00 + ships free

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Chromag Hifi V2 Stem, 31.8mm x 31mm, Orange
Chromag Hifi V2 Stem, 31.8mm x 31mm, Orange

Contoured surfaces for human contact and structural optimization High polished finish Low stack height Weight: 195g … read more

your price $94.00 + ships free

BuyBuyPART NUM 475429
Chromag Hifi V2 Stem, 31.8mm x 40mm, Orange
Chromag Hifi V2 Stem, 31.8mm x 40mm, Orange

Contoured surfaces for human contact and structural optimization High polished finish Low stack height Weight: 195g … read more

your price $94.00 + ships free

BuyBuyPART NUM 110730
Chromag HiFi V2 Stem: 40mm 31.8mm Clamp 1-1/8 +/- 0 Degree Black
Chromag HiFi V2 Stem: 40mm 31.8mm Clamp 1-1/8 +/- 0 Degree Black

HiFi V2 stems are forged and designed to be light and durable. Featuring a variety of clamp sizes and lengths, the HiFi V2 is the perfect complement … read more

your price $94.00 + ships free

BuyBuyPART NUM 819759
Chromag Hifi V2, Stem, 31.8mm x 31mm, Blue
Chromag Hifi V2, Stem, 31.8mm x 31mm, Blue

Contoured surfaces for human contact and structural optimization High polished finish Low stack height Weight: 195g … read more

Currently Sold Out

your price $94.00 + ships free

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Chromag HiFi Version 2 Stem: 50mm 31.8mm 1-1/8 +/- 0 degree Black
Chromag HiFi Version 2 Stem: 50mm 31.8mm 1-1/8 +/- 0 degree Black

HiFi V2 stems are forged and designed to be light and durable. Featuring a variety of clamp sizes and lengths, the HiFi V2 is the perfect complement … read more

10% offretail $94.00 your price $84.60 + ships free

BuyBuyPART NUM 717933
Atomlab

"Built for Race"

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Thomson

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

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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."

See all Whisky Parts Co.

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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Kind Shock

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

See all Kind Shock

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.

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

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.

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Buy this product and your entire order ships for free.

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