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28.6 31.8 mm 53 mm Bicycle Stems

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

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.

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Showing 12 products:

Promax Impact BMX Stem - 53mm, Top Load, Black
Promax Impact BMX Stem - 53mm, Top Load, Black

The Impact is a top-load BMX stem, cold forged from the highest quality 6061-T6 aluminum then CNC machined to refine the shape and further reduce weight. … read more

your price $49.99 + ships free

BuyBuyPART NUM 740438
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, 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
Promax Banger BMX Stem - 53mm, Front Load, Black
Promax Banger BMX Stem - 53mm, Front Load, Black

Banger stems have a front-load design and can be used with either side up, providing a 5-millimeter drop or rise. Available with 48-millimeter and 53-millimeter … read more

your price $49.99 + ships free

BuyBuyPART NUM 560168
Promax Banger 53mm Front Load Stem for 31.8mm Bars Silver
Promax Banger 53mm Front Load Stem for 31.8mm Bars Silver

Promax Stems Uses M6 bolts Item Specifications Bar Clamp Diameter (mm): 31.8 Color: Silver Reach: 53 Steerer Clamp Diameter: 1-1/8" … read more

your price $49.99 + ships free

BuyBuyPART NUM 386167
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, 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 Hollow Stem, (31.8) 0d X 53mm - Black
BOX Hollow Stem, (31.8) 0d X 53mm - Black

Forged, CNC machined 6061-T6 aluminum with hollow CrMo hex bolts Open skeletal design and a dual mid-bolt wedge mounting system Choose … read more

Currently Sold Out

your price $99.95 + ships free

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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

InfoInfo
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, 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 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
Atomlab

"Built for Race"

See all Atomlab

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

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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