Lowest Price 80- mm 31.8 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.
Bar clamp diameter is the diamater of the handlebar.
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Showing 97 products:
Kalloy Uno AS-7AD Adjustable Stem, 31.8 x 80mm, Black 
BuyPART NUM 517978
Lightweight 3D forged 6061-T6 aluminum 4-bolt faceplate Includes top cap and bushings to adjust stem angle (+/ 8d, +/ 12d … read more
your price $23.19
BuyPART NUM 517978 
EVO E-Tec OS Stem, 28.6mm, 80mm, ±7 degree, 31.8mm, Black 
Info
3D forged alloy construction Fits 1-1/8 (28.6mm) steerer forks Fits 31.8mm handlebar clamp Heat treated hardware … read more
Ships Free7% offretail $29.99 your price $27.99 + ships free
Info 
Origin8 Pro Fit Alloy Ergo Stem, 80x31.8, 8d, Black Info
3D forged AL6061-T6 alloy construction 4-bolt, 2-piece faceplate design Road or Mountain compatible ISO-Mountain safety certified … read more
15% offretail $34.99 your price $29.75
Info 
Origin8 Pro Fit Alloy Ergo Stem, 80x31.8, 17d, Black Info
3D forged AL6061-T6 alloy construction 4-bolt, 2-piece faceplate design Road or Mountain compatible ISO-Mountain safety certified … read more
15% offretail $34.99 your price $29.75
Info 
Ritchey RL-1 4-Axis Stem (31.8mm Clamp, 80mm), Black
BuyPART NUM 479900
With its unique faceplate design, the Ritchey 4-Axis stem was a game-changer when it was first released many years ago. Today, the OE 4-Axis-44 stem … read more
your price $29.95
BuyPART NUM 479900 
EVO E-Tec OS Stem, 28.6mm, 80mm, ±17 degree, 31.8mm, Black Info
3D forged alloy construction Fits 1-1/8 (28.6mm) steerer forks Fits 31.8mm handlebar clamp Heat treated hardware … read more
your price $29.99
Info 
Cinelli Pista 6061-T6 Stem, (31.8) 65d X 80mm - Black BuyPART NUM 655131
Forged and machined 6061-T6 aluminum construction with 4-bolt removable faceplate Twin, opposed-direction steerer clamp bolts Matte … read more
your price $29.99
BuyPART NUM 655131 
Promax Gent 31.8mm Stem, Length 80mm, 1-1/8" Threadless Black BuyPART NUM 816908
Promax Gent Stem Item Specifications Bar Clamp Diameter (mm): 31.8 Color: Black Length: 80 Material: Aluminum S.H.I.S. Stem Clamp Diameter: 28.6 … read more
your price $31.99 + ships free
BuyPART NUM 816908 
Kalloy Uno Ahead Adjustable Stem, 31.8x85mm, Black BuyPART NUM 441808
Kalloy Uno AS-4005 Adjustable Ahead Stem with Riser 13.8 x 85 mm Matte Black … read more
your price $31.99
BuyPART NUM 441808 
FSA Omega Stem 80mm +/-6d, 31.8mm
BuyPART NUM 972972
3D forged then CNC machined from AL6061-T6 aluminum 4-bolt cold forged alloy faceplate 40mm stack height Item Specifications … read more
your price $34.30 + ships free
BuyPART NUM 972972 
Origin8 Pro Fit Threadless Stem, 80 x 31.8mm, +/-6d, Black BuyPART NUM 896679
Available in a variety of lengths, angles, and bar bores for the perfect fit Road or Mountain compatible 3D forged AL6061-T6 alloy … read more
15% offretail $41.99 your price $35.69 + ships free
BuyPART NUM 896679 
MSW 17 Stem: 80mm 31.8 x 17d, 1-1/8, Black BuyPART NUM 482740
MSW 17 degree stems raise the bar--literally--for what riders can expect from an inexpensive stem. Available in lengths from 60-120mm for custom-fitting. … read more
your price $36.99 + ships free
BuyPART NUM 482740 
Dimension Trail Stem - 80mm, 31.8mm, +/- 6 Degree, Aluminum, Black 
BuyPART NUM 873048
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 $36.99 + ships free
BuyPART NUM 873048 
MSW 25 Stem - 80mm, 31.8 Clamp, +/-25, 1-1/8", Aluminum, Black BuyPART NUM 535964
MSW 25 degree stems raise the bar-literally-for what riders can expect from an unassuming stem. Available in lengths from 60-110mm for custom-fitting. … read more
your price $36.99 + ships free
BuyPART NUM 535964 
FSA V-Drive Stem - 80mm 31.8mm +/- 6 Degree Alloy Black BuyPART NUM 498028
3D forged and CNC machined AL6061/T6 mountain bike stem. 4-bolt cold-forged alloy faceplate Chromoly hardware Item Specifications … read more
your price $37.00 + ships free
BuyPART NUM 498028 
Dimension Threadless Stem: 80mm; 83/97 Degree; 31.8; Silver
4.8 of 5
( 23 )
4.8 of 5 stars average
( 23 reviews )
BuyPART NUM 792903
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
( 23 )
4.8 of 5 stars average
( 23 reviews )
your price $37.00 + ships free
BuyPART NUM 792903 
FSA V-Drive MTB Stem, 80mm, +/-17 Degrees, 31.8, Black BuyPART NUM 764078
3D forged and CNC machined AL6061/T6 4-bolt cold-forged alloy faceplate Chromoly hardware 40mm fork clamp stack height … read more
your price $37.00 + ships free
BuyPART NUM 764078 
Origin8 Everland MX/GX 25 degree Stem, 80x31.8, Black BuyPART NUM 617684
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
popular15% offretail $43.99 your price $37.39 + ships free
BuyPART NUM 617684 
Origin8 Everland MX/GX 40 degree Stem, 80x31.8, Black BuyPART NUM 474084
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 $43.99 your price $37.39 + ships free
BuyPART NUM 474084 
Origin8 Flow Stem, 80x31.8x28.6, -7d, Black BuyPART NUM 570052
Road or Mountain compatible 3D forged AL6061-T6 alloy construction 40mm stack height 4-bolt front loading one-piece faceplate … read more
15% offretail $44.99 your price $38.29 + ships free
BuyPART NUM 570052 
"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."
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."
"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."
Thomson is leading with innovative design for two primary markets - aerospace and cycling.
"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."
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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