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50 mm Bicycle Stems

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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Thomson X4 Mountain 31.8 50mm 90 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 50mm 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 534897
Deity Components Copperhead Stem - 50mm 35mm 0 Degree Aluminum Red
Deity Components Copperhead Stem - 50mm 35mm 0 Degree Aluminum Red

Inspired by the sleek and deadly lines of a Copperhead snake, the sweeping center channels of the Copperhead stem wrap around the entire stem to minimize … read more

your price $98.99 + ships free

BuyBuyPART NUM 974196
Renthal Apex 35 Stem: 35mm Clamp, 1-1/8" Steerer, 50mm Length, +/- 6 degree, Black/Gold
Renthal Apex 35 Stem: 35mm Clamp, 1-1/8" Steerer, 50mm Length, +/- 6 degree, Black/Gold

Combining All Mountain strength, Enduro stiffness and XC weight savings, this stem is ideal for any type of riding style. The unique 240 degree, two-piece … read more

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

$21 offretail $109.95 your price $87.99 + ships free

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RaceFace Atlas Stem Black 50mm x 31.8
RaceFace Atlas Stem Black 50mm 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 720812
DMR Defy2 Stem, (31.8) 5d X 50mm - Black
DMR Defy2 Stem, (31.8) 5d X 50mm - Black

CNC machined 6061 aluminum stem, ideal for All Mountain and Trail use Internal steerer clamp with low stack height (31mm) Super wide … read more

your price $69.99 + ships free

BuyBuyPART NUM 579856
Paul Component Engineering Boxcar Stem, 50mm +/- 0 degree 31.8mm 1-1/8" Threadless Black
Paul Component Engineering Boxcar Stem, 50mm +/- 0 degree 31.8mm 1-1/8" Threadless Black

Paul Component Engineering Boxcar Stem, 50mm +/- 0 degree 31.8mm 1-1/8" Threadless Black Item Specifications Color: Black Weight: 137 Length: 50 … read more

$14 offretail $123.00 your price $108.99 + ships free

BuyBuyPART NUM 154649
Black Op MX BMX Quill Stem - Black
Black Op MX BMX Quill Stem - Black

Material Alloy/Steel 4 bolt clamp BMX Quill Steerer 4-1/4" … read more

your price $21.99

BuyBuyPART NUM 343326
Black Ops Defend'R BMX Threadless Stem, 1-1/8", Red
Black Ops Defend'R BMX Threadless Stem, 1-1/8", Red

4-Bolt Face Clamp 28.6mm (1-1/8`) Steerer Clamp 50mm Length Extension 30mm Stack height AL6061 Forged Alloy 240g … read more

your price $24.99

BuyBuyPART NUM 305891
Black Ops Defend'R BMX Threadless Stem, 1-1/8", Black
Black Ops Defend'R BMX Threadless Stem, 1-1/8", Black

4-Bolt Face Clamp 28.6mm (1-1/8`) Steerer Clamp 50mm Length Extension 30mm Stack height AL6061 Forged Alloy 240g … read more

your price $23.99

BuyBuyPART NUM 167642
Origin8 Fix8 OS Stem, 1-1/8x50x31.8, Black
Origin8 Fix8 OS Stem, 1-1/8x50x31.8, Black

AL6061 3D forged aluminum construction 4 bolt front loading design EN MTN safety certified Type: Mountain Threadless Fork … read more

15% offretail $43.99 your price $37.40 + ships free

BuyBuyPART NUM 523981
Thomson 50mm x 7/8" Black BMX Stem
Thomson 50mm x 7/8" Black BMX StemThomson

Thomson BMX Stems are constructed of machined 7000-series extruded bar stock with heat-treated bolts. Item Specifications Color: Black Intended Use: … read more

your price $114.95 + ships free

BuyBuyPART NUM 368738
Dimension Trail Stem - 50mm, 35mm, 0 Degree, Aluminum, Black
Dimension Trail Stem - 50mm, 35mm, 0 Degree, Aluminum, Black Dimension

For cross country and all-mountain riding, Dimension Trail Stems provide a broad array of sizing options--lengths from 35 to 120mm--rigorously tested … read more

your price $35.00 + ships free

BuyBuyPART NUM 863173
Eclat Onyx 25.4mm Stem 33mm Rise 50mm Reach 25.4mm Clamp Army Green
Eclat Onyx 25.4mm Stem 33mm Rise 50mm Reach 25.4mm Clamp Army GreenEclat

Introducing the Onyx stem. Using cold forging technology rather than CNC machining, this stem has an incredibly smooth and unique shape but also strength … read more

your price $59.99 + ships free

BuyBuyPART NUM 760141
Syntace Megaforce 2 Stem: 96d; Black
Syntace Megaforce 2 Stem: 96d; BlackSyntace

Syntace Megaforce 2 Stems Intended use: all-mountain, freeride, downhill 36 x 42mm bar clamp was designed to stiffen up cockpits using bars more than … read more

32% offretail $99.00 $67.00 to $89.10

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RaceFace Atlas Stem Blue 50mm x 31.8
RaceFace Atlas Stem Blue 50mm 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 191283
Thomson X4 Mountain 31.8 50mm 90 Degrees Silver 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 50mm 90 Degrees Silver 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 465413
Black Ops MX  BMX Quill Stem 5-1/2 Steerer Black
Black Ops MX BMX Quill Stem 5-1/2 Steerer Black

Material Alloy/Steel 4-bolt Alloy top Steerer: 5-1/2" … read more

your price $19.99

BuyBuyPART NUM 116205
Race Face Chester 35 Direct Mount Stem: 50mm x 35mm Black
Race Face Chester 35 Direct Mount Stem: 50mm x 35mm Black

Race Face Chester 35 Direct Mount Stem: 50mm x 35mm Black Item Specifications Color: Black Length: 50 Bar Clamp Diameter: 35.0 S.H.I.S. Stem Clamp … read more

15% offretail $59.99 your price $50.99 + ships free

BuyBuyPART NUM 346534
RaceFace Atlas Stem Red 50mm x 31.8
RaceFace Atlas Stem Red 50mm 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 562413
Thomson

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

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We The People

"W-T-P have always taken a lot of pride in ourselves and in building bikes that are capable of taking everything a rider throws at them. We are constantly at the forefront of developing and manufacturing materials that will with stand hard and furious riding and our designs are made to combat common breaks and bends."

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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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Eclat

"Simplicity is the hardest design principle to follow; It's at the heart of our approach to eclat."

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Syntace

"Strong. Light. Smart."

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Industry Nine

"Industry Nine hubs are handmade in Asheville, NC"

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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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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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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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Atomlab

"Built for Race"

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Saltplus

Ridden by everyone around the world, from BMX PRO's to newcomers, the Saltplus collection brings the latest technology and modern designs down to an affordable price point without sacrificing quality.

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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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