28.6 31.8 mm Bicycle Stems
S.H.I.S clamp diameter is the steerer tube diameter.
Bar clamp diameter is the diamater of the handlebar.
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Showing 901 products:
Cirrus Cycles Kinekt Suspension Stem - 100, 31.8 Clamp, +30, 1-1/8", Alloy, Black 
BuyPART NUM 631002
The Kinekt Suspension Stem is designed to reduce arm, wrist, and shoulder discomfort. Adjustable, Compact, and built to last. Significantly reduces … read more
In Store
Cirrus Cycles ST100HR
Ships Freeyour price $189.95 + ships free
BuyPART NUM 631002 
Redshift Sports ShockStop Stem - 80mm, 31.8 Clamp, +/-6, 1 1/8", Aluminum, Black BuyPART NUM 609797
An adjustable stiffness suspension stem that smooths out the ride by reducing the affects of impacts and road vibrations. Unwanted vertical movement … read more
your price $189.99 + ships free
BuyPART NUM 609797 
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 )
popularyour price $132.95 + ships free
BuyPART NUM 235686 
Soma Shotwell Stem (31.8) 83/7 X 100mm Silver BuyPART NUM 422025
3-D forged aluminum with 4-bolt bar clamp 83 or 7 degree flip flop design. 137g (80mm) Includes shim for 1" threadless steerers … read more
One remaining at this priceyour price $44.99 + ships free
BuyPART NUM 422025 
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
Choose 
Promax Gent 31.8mm Stem, Length 90mm, 1-1/8" Threadless Black BuyPART NUM 882930
Promax Gent Stem Item Specifications Bar Clamp Diameter (mm): 31.8 Color: Black Length: 90 Material: Aluminum S.H.I.S. Stem Clamp Diameter: 28.6 … read more
your price $31.99 + ships free
BuyPART NUM 882930 
FSA K-Force OS-99 Carbon Stem 31.8x90mm
BuyPART NUM 159864
FSA (Full Speed Ahead) K-Force Light OS-99 Stems 3D forged and CNC machined from AL-2014 UD carbon weave skin applied through CSI process … read more
your price $186.20 + ships free
BuyPART NUM 159864 
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 
Promax Gryf 31.8mm MTB Stem, Length 35mm, 1-1/8" Threadless Black BuyPART NUM 250229
Promax Gryf Stems. Rugged, durable, dependable. The GRYF stem was designed and cold forged to hold up on any ride. City, trail, mountain. Item Specifications … read more
your price $44.99 + ships free
BuyPART NUM 250229 
Hope XC Stem - 70mm, 31.8 Clamp, +/-0, 1-1/8", Red BuyPART NUM 639939
Hope XC stem is optimised for the perfect balance of weight and stiffness. Gone are the days that XC meant noodly handling. Our new stem is designed … read more
your price $120.00 + ships free
BuyPART NUM 639939 
Ritchey Comp 4-Axis Stem - 110 mm, 31.8 Clamp, +/-6, 1 1/8", Alloy, Black BuyPART NUM 742604
Proven time after time to be a reliable, easily adjustable system that continues to outperform the competition, the 4-Axis stem is a sure fire go to for … read more
your price $52.95 + ships free
BuyPART NUM 742604 
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 
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 
Profile Design Aris Stem: 70MM; 65/115degree; Black; 1-1/8"; 31.8 BuyPART NUM 448740
Profile Design Aris Stems. Available for 26.0 & 31.8 3D forged 6061-T6 Aluminum Item Specifications Color: Black Intended Use: Road Steerer Tube: … read more
your price $42.00 + ships free
BuyPART NUM 448740 
RaceFace Atlas Stem Black 65mm x 31.8 BuyPART NUM 961881
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
BuyPART NUM 961881 
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 
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 
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
Choose 
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 
"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.'
"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."
Thomson is leading with innovative design for two primary markets - aerospace and cycling.
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.
"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."
"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."
"The world's best choose Cane Creek. A key element of Cane Creek's mission is to support the sport of cycling, including racing, charitable activities and cycling advocacy. Cane Creek believes strongly in the power of bicycles and their potential to effect positive change in our society. To that end, Cane Creek supports athletes and teams whose purpose encompasses more than competitive racing, such as getting more people on bikes, improving or promoting a healthy lifestyle, and making our world better through the use of a bike."
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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