31.8- mm 30 mm Threadless Bicycle Stems
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.
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Showing 14 products:
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
In Store
Ships Freeyour price $99.00 + ships free
BuyPART NUM 335355 
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 
Industry Nine A318 Stem, (31.8) 30mm - Black
BuyPART NUM 548212
7075 domestically sourced aluminum is machined, anodized and assembled in North Carolina 180 degree clamp wrap with high strength 316 stainless … read more
your price $145.00 + ships free
BuyPART NUM 548212 
Industry Nine A318 Stem, (31.8) 30mm - Blue BuyPART NUM 125089
7075 domestically sourced aluminum is machined, anodized and assembled in North Carolina 180 degree clamp wrap with high strength 316 stainless … read more
your price $145.00 + ships free
BuyPART NUM 125089 
Industry Nine A318 Stem, (31.8) 30mm - Silver
5 of 5
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5 of 5 stars
( 1 review )
BuyPART NUM 350396
7075 domestically sourced aluminum is machined, anodized and assembled in North Carolina 180 degree clamp wrap with high strength 316 stainless … read more
5 of 5
( 1 )
5 of 5 stars
( 1 review )
your price $145.00 + ships free
BuyPART NUM 350396 
Industry Nine A318 Stem, (31.8) 30mm - Lime BuyPART NUM 982450
7075 domestically sourced aluminum is machined, anodized and assembled in North Carolina 180 degree clamp wrap with high strength 316 stainless … read more
your price $145.00 + ships free
BuyPART NUM 982450 
Industry Nine A318 Stem, (31.8) 30mm - Gold BuyPART NUM 286208
7075 domestically sourced aluminum is machined, anodized and assembled in North Carolina 180 degree clamp wrap with high strength 316 stainless … read more
your price $145.00 + ships free
BuyPART NUM 286208 
Industry Nine A318 Stem, (31.8) 30mm - Red BuyPART NUM 364346
7075 domestically sourced aluminum is machined, anodized and assembled in North Carolina 180 degree clamp wrap with high strength 316 stainless … read more
your price $145.00 + ships free
BuyPART NUM 364346 
Industry Nine A318 Stem, (31.8) 30mm - Purple BuyPART NUM 555514
7075 domestically sourced aluminum is machined, anodized and assembled in North Carolina 180 degree clamp wrap with high strength 316 stainless … read more
your price $145.00 + ships free
BuyPART NUM 555514 
Industry Nine A318 Stem, (31.8) 30mm - Turquoise BuyPART NUM 677527
7075 domestically sourced aluminum is machined, anodized and assembled in North Carolina 180 degree clamp wrap with high strength 316 stainless … read more
your price $145.00 + ships free
BuyPART NUM 677527 
ProTaper Trail Stem, 31.8 x 30mm, Limited Edition Polished BuyPART NUM 473855
The ProTaper stem may look simple, but under that beautiful veneer lies hours of 3D modelling, countless FEA revisions, and tons of real-world … read more
5% offretail $104.99 your price $99.99 + ships free
BuyPART NUM 473855 
Industry Nine A318 Stem, (31.8) 30mm - Orange BuyPART NUM 871980
7075 domestically sourced aluminum is machined, anodized and assembled in North Carolina 180 degree clamp wrap with high strength 316 stainless … read more
your price $145.00 + ships free
BuyPART NUM 871980 
Industry Nine, A318, Stem, Diameter: 31.8mm, Length: 30mm, Steerer: 1-1/8'', 8 degree, Green 
Info
Crafted from domestically-sourced 7075 aluminum billet 180 degrees of handlebar contact on the stem body for twist-free security that will … read more
your price $155.00 + ships free
Info 
Industry Nine A318, Stem Diameter, 1-1/8", 31.8 x 30mm, 8 degree, Black Info
Crafted from domestically-sourced 7075 aluminum billet 180 degrees of handlebar contact on the stem body for twist-free security that will … read more
your price $155.00 + ships free
Info 
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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