31.8 mm In Store Bicycle Stems
Bar clamp diameter is the diamater of the handlebar.
In Store products are available to view in our showroom. In Store orders usually ship the same or next business day.
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Showing 18 products:
Renthal Duo Stem: 50mm 100d AluGold/Black 31.8
4 of 5
( 2 )
4 of 5 stars average
( 2 reviews )
BuyPART NUM 235686
CNC machined from 6082 T6 aluminium alloy U-shape cradle clamp eliminates handlebar stress risers found with traditional stems Made in Cheshire … read more
4 of 5
( 2 )
4 of 5 stars average
( 2 reviews )
popular
In Store
Ships Freeyour price $132.95 + ships free
BuyPART NUM 235686 
Origin8 Pro-Fit MTB Quill Stem
5 of 5
( 1 )
5 of 5 stars
( 1 review )
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
5 of 5
( 1 )
5 of 5 stars
( 1 review )
15% offretail $39.99 your price $33.99
BuyPART NUM 612721 
Gusset S2 AM Stem, 31.8 x 30mm, 1-1/8", Black BuyPART NUM 335355
BTI Part Number: GU-6526 Vendor Part Number: ASGU2A23K Steerer Diameter: 1-1/8" Bar Diameter: 31.8 Rise: 0 Degrees … read more
your price $99.00 + ships free
BuyPART NUM 335355 
Ritchey WCS C220 Stem - 90mm, 31.8mm, -6 Degree, Aluminum, Matte Black
BuyPART NUM 509818
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 $109.95 + ships free
BuyPART NUM 509818 
Ritchey Classic C220 Stem 31.8mm +/- 6 degree HP Silver 
Choose
C220 with forward facing bolt design for easy installation Coated chromoly hardware Item Specifications Color: Silver Bar Clamp … read more
your price $79.95 + ships free
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Thomson X4 Mountain 31.8 130mm 90 Degrees Black 1-1/8" Threadless Stem
4 of 5
( 2 )
4 of 5 stars average
( 2 reviews )
BuyPART NUM 724444
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
( 2 )
4 of 5 stars average
( 2 reviews )
your price $114.95 + ships free
BuyPART NUM 724444 
FSA Afterburner Stem, (31.8) 78/12d X 70mm - Black
BuyPART NUM 981412
3D forged, CNC machined 6061 aluminum CrMo hardware. 4-bolt alloy faceplate. 2-bolt steerer clamp Two tone black graphics on ±12 deg … read more
your price $80.00 + ships free
BuyPART NUM 981412 
Deity Copperhead 50mm 31.8 Stem Orange BuyPART NUM 661200
Even lighter than the Cavity stem Machined from 6061 T6 aluminum Short 30mm stack height and 55mm wide faceplate for increased stiffness … read more
your price $104.99 + ships free
BuyPART NUM 661200 
Box One Front Load Stem, 48mm x 31.8mm x 28.6mm, Black BuyPART NUM 697072
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
BuyPART NUM 697072 
Genetic Juzzi 2-Axis Adjustable Road Stem, (31.8) 120mm BuyPART NUM 671000
Adjustable 7050 alloy road stem 2-axis pivoting system for setting ideal rise and reach Item Specifications steerer dia.: 1-1/8" … read more
14% offretail $69.95 your price $59.99 + ships free
BuyPART NUM 671000 
ProTaper Stem 31.8 x 30mm, 28.6, Stealth Black BuyPART NUM 590926
3D forged and machined 6061 alloy construction A2 stainless Torx bolts Item Specifications steerer dia.: 1-1/8" bar dia.: 31.8mm … read more
your price $104.99 + ships free
BuyPART NUM 590926 
Spank Spike Race 2 Stem, 31.8 x 50mm, 0d, Green BuyPART NUM 278227
2D forged MGR alloy is CNC weight optimized Chamfered bar clamps reduce stress risers in the critical bar/stem interface Shotpeen anodized … read more
your price $59.99
BuyPART NUM 278227 
Ritchey WCS C220 Stem - 120mm, 31.8mm, -6 Degree, Aluminum, Matte Black BuyPART NUM 376377
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 $109.95 + ships free
BuyPART NUM 376377 
Ritchey C-260 Superlogic Carbon Stem Choose
Ritchey Stems Matte UD carbon Stack: 42mm Item Specifications Color: Black Weight: 125g Intended Use: Road Bar Clamp Diameter: 31.8mm Stem … read more
your price $249.95 + ships free
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Zipp Service Course Stem, 31.8mm x 130mm, 1-1/8', 6 degree, Silver BuyPART NUM 195773
Increased stiffness-to-weight ratio 6061 alloy Steel hardware Bead Blast black finish Item Specifications … read more
your price $56.00 + ships free
BuyPART NUM 195773 
Kalloy Uno Upshot Stem, (31.8) 35d X 110mm Black BuyPART NUM 801402
Lightweight high rise 2D forged aluminum stem for comfort 4-bolt windowed faceplate, 40mm tall steerer clamp. Approximate weight: 160g … read more
your price $13.99
BuyPART NUM 801402 
Paul Components Boxcar Stem - 31.8 x 70mm, Black BuyPART NUM 437421
The perfect combination of stiffness and strength at a reasonable weight Made with US sourced 2024 aircraft alloy All screws are high … read more
your price $147.50 + ships free
BuyPART NUM 437421 
Zipp Service Course Stem, 31.8mm x 90mm, 1-1/8', 25 degree, Silver BuyPART NUM 748924
Increased stiffness-to-weight ratio 6061 alloy Steel hardware Bead Blast black finish Item Specifications … read more
your price $56.00 + ships free
BuyPART NUM 748924 
"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.'
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."
We define color as the main color of the item. It may have accents or highlights in other colors.
These products are one of our best sellers.
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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