31.8- mm Black Bicycle Stems
Bar clamp diameter is the diamater of the handlebar.
We define color as the main color of the item. It may have accents or highlights in other colors.
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Showing 656 products:
Dimension Threadless Road Stem: 70mm; 125 Degree; Black; 1-1/8"; 31.8
4.8 of 5
( 19 )
4.8 of 5 stars average
( 19 reviews )
BuyPART NUM 481683
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
4.8 of 5
( 19 )
4.8 of 5 stars average
( 19 reviews )
In Store
Ships Freeyour price $32.00 + ships free
BuyPART NUM 481683 
Origin8 Everland MX/GX 40 degree Stem, 100x31.8, Black BuyPART NUM 175945
High angle stems ideal for Monstercross or Gravel bikes equipped with off-road drop bars Raises drop bars eliminating the need for excessive … read more
15% offretail $34.99 your price $29.75 + ships free
BuyPART NUM 175945 
Origin8 Everland MX/GX 40 degree Stem, 90x31.8, Black BuyPART NUM 506949
High angle stems ideal for Monstercross or Gravel bikes equipped with off-road drop bars Raises drop bars eliminating the need for excessive … read more
15% offretail $34.99 your price $29.75 + ships free
BuyPART NUM 506949 
Ritchey Comp 4-Axis 30D Stem: 60mm, +30 degrees, 31.8, 1-1/8, BB Black
5 of 5
( 1 )
5 of 5 stars
( 1 review )
BuyPART NUM 360324
Item Specifications Color: BB Black Weight: 170 Length: 60 Bar Clamp Diameter: 31.8 Stem Angle: +30 S.H.I.S. Stem Clamp Diameter: 28.6 Stack … read more
5 of 5
( 1 )
5 of 5 stars
( 1 review )
your price $39.95 + ships free
BuyPART NUM 360324 
Salsa Guide Stem 70mm 31.8 +/-6 degree Black
BuyPART NUM 837061
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
BuyPART NUM 837061 
Salsa Guide Stem 65/115 31.8
4.8 of 5
( 13 )
4.8 of 5 stars average
( 13 reviews )
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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
4.8 of 5
( 13 )
4.8 of 5 stars average
( 13 reviews )
your price $40.00 + ships free
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Origin8 Pro-Fit MTB Quill Stem BuyPART NUM 612721
Forged AL6061-T6 alloy construction 31.8mm clamp diameter 4-bolt faceplate 180mm long quill Matte finish with laser etched … read more
your price $24.50
BuyPART NUM 612721 
FSA SL-K Stem - 100mm, 31.8mm, +/- 12 Degree, Aluminum, Black
BuyPART NUM 119460
FSA SL-K Stems Chromoly hardware 3d forged and CNC machined AL-2014 Carbon fiber faceplate Item Specifications … read more
your price $90.99 + ships free
BuyPART NUM 119460 
Thomson X4 Mountain 31.8 90mm 90 Degrees Black 1-1/8" Threadless Stem
4 of 5
( 1 )
4 of 5 stars
( 1 review )
BuyPART NUM 788193
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
4 of 5
( 1 )
4 of 5 stars
( 1 review )
your price $114.95 + ships free
BuyPART NUM 788193 
Salsa Guide Stem 75/105 31.8
4.8 of 5
( 13 )
4.8 of 5 stars average
( 13 reviews )
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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
4.8 of 5
( 13 )
4.8 of 5 stars average
( 13 reviews )
your price $40.00 + ships free
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RaceFace Turbine Stem: 60x31.8mm; 84/96;,Black BuyPART NUM 682152
RaceFace Stems Intended for XC, Trail and All Mountain use Machined to precision with 7075 aluminum for high strength & fatigue resistance at a very … read more
15% offretail $99.99 your price $84.99 + ships free
BuyPART NUM 682152 
Paul Component Engineering Boxcar Stem, 90mm +/- 15 degree 31.8mm 1-1/8" Threadless Black BuyPART NUM 971591
Paul Component Engineering Boxcar Stem, 90mm +/- 15 degree 31.8mm 1-1/8" Threadless Black Item Specifications Color: Black Weight: 172 Length: 90 … read more
Lowest Price$14 offretail $123.00 your price $108.99 + ships free
BuyPART NUM 971591 
Ritchey Comp 4 Axis Stem: 120mm~ 84/96d~ 31.8~ BB Black
5 of 5
( 1 )
5 of 5 stars
( 1 review )
BuyPART NUM 571764
Ritchey Stems Item Specifications Color: Black Intended Use: Mountain Bar Clamp Diameter: 31.8mm Stem Angle: 84,96deg Stem Length: 120mm Defined … read more
5 of 5
( 1 )
5 of 5 stars
( 1 review )
your price $39.95 + ships free
BuyPART NUM 571764 
Syntace Megaforce 2 Stem: 96d; Black
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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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Thomson X2 31.8 130mm 73/107 Degrees Black 1-1/8" Threadless Road Stem BuyPART NUM 875369
Thomson X2 Road Stem features a new steer tube clamp assembly that is lighter than the Elite style. 31.8 bar clamp diameter with smooth edges for carbon … read more
your price $114.95 + ships free
BuyPART NUM 875369 
Thomson X2 31.8 130mm 80/100 Degrees Black 1-1/8" Threadless Road Stem BuyPART NUM 790414
Thomson X2 Road Stem features a new steer tube clamp assembly that is lighter than the Elite style. 31.8 bar clamp diameter with smooth edges for carbon … read more
your price $114.95 + ships free
BuyPART NUM 790414 
Ritchey WCS C-220 Stem, (31.8) 73dx70 Matte Black BuyPART NUM 488928
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
BuyPART NUM 488928 
Zipp Service Course Road Stem 80mm, 84 or 96 degree, 31.8mm, Bead Blast Black BuyPART NUM 438520
Zipp Speed Weaponry Stems Forged AL-7050 Forged AL-7050 Item Specifications Color: Bead Blast Black Weight: 130 Length: 80 Bar Clamp Diameter: … read more
your price $55.00 + ships free
BuyPART NUM 438520 
Zipp Service Course Road Stem: 120mm; 73/107; 31.8 BuyPART NUM 858440
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
BuyPART NUM 858440 
Thomson X4 1.5" 45mm 0 Degrees 31.8 Black BuyPART NUM 355688
Thomson X4 One Point Five Stems feature custom heat-treated bolts with corrosion-preventative plating. Machined 7000-series extruded bar … read more
your price $114.95 + ships free
BuyPART NUM 355688 
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.
"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.'
"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."
"Full Speed Ahead (FSA) produces world class bicycle components for road cycling and mountain biking and we support many of the world's leading road and mountain bike teams."
Thomson is leading with innovative design for two primary markets - aerospace and cycling.
"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."
"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."
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.
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
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