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31.8 mm Bicycle Stems

Bar clamp diameter is the diamater of the handlebar.

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Thomson X4 Mountain 31.8 50mm 90 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 50mm 90 Degrees Black 1-1/8" Threadless StemThomson

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

StarStarStarStarStar 4 of 5 ( 1 ) 4 of 5 stars ( 1 review )

your price $99.95 + ships free

BuyBuyPART NUM 534897
Thomson X4 Mountain 31.8 90mm 90 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 90mm 90 Degrees Black 1-1/8" Threadless StemThomson

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

StarStarStarStarStar 4 of 5 ( 1 ) 4 of 5 stars ( 1 review )

your price $99.95 + ships free

BuyBuyPART NUM 788193
Ritchey Adjustable 4-Axis Stem
Ritchey Adjustable 4-Axis Stem

Adjustable from +40 to -32 degrees Stainless bar and stem clamp bolts Item Specifications Weight: 270 Bar Clamp … read more

your price $49.95

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DMR Defy2 Stem, (31.8) 5d X 50mm - Black
DMR Defy2 Stem, (31.8) 5d X 50mm - Black

CNC machined 6061 aluminum stem, ideal for All Mountain and Trail use Internal steerer clamp with low stack height (31mm) Super wide … read more

your price $69.99 + ships free

BuyBuyPART NUM 579856
RaceFace Turbine Stem: 60x31.8mm; 84/96;,Black
RaceFace Turbine Stem: 60x31.8mm; 84/96;,Black

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

BuyBuyPART NUM 682152
Spank Spike Race Stem 35mm Length, 31.8 Bar Clamp, Matte Black Bearclaw Edition
Spank Spike Race Stem 35mm Length, 31.8 Bar Clamp, Matte Black Bearclaw Edition

Spank's Spike stem is among the shortest available to better fit the latest generation of super long bikes and super wide bars. 2D forged, micro … read more

your price $79.00 + ships free

BuyBuyPART NUM 718027
Thomson X4 Mountain 31.8 110mm 100 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 110mm 100 Degrees Black 1-1/8" Threadless StemThomson

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

StarStarStarStarStar 4 of 5 ( 1 ) 4 of 5 stars ( 1 review )

your price $99.95 + ships free

BuyBuyPART NUM 647349
Ritchey Comp 4 Axis Stem: 120mm~ 84/96d~ 31.8~ BB Black
Ritchey Comp 4 Axis Stem: 120mm~ 84/96d~ 31.8~ BB Black

Ritchey Stems Item Specifications Color: Black Intended Use: Mountain Bar Clamp Diameter: 31.8mm Stem Angle: 84,96deg Stem Length: 120mm Defined … read more

StarStarStarStarStar 5 of 5 ( 1 ) 5 of 5 stars ( 1 review )

your price $39.95 + ships free

BuyBuyPART NUM 571764
Salsa Guide Stem 120mm 31.8 +/-6 degree Black
Salsa Guide Stem 120mm 31.8 +/-6 degree BlackSalsa

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

BuyBuyPART NUM 225700
Ritchey WCS C-220 Stem, (31.8) 73dx70 Matte Black
Ritchey WCS C-220 Stem, (31.8) 73dx70 Matte Black

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

BuyBuyPART NUM 488928
Dimension Threadless Stem: 110mm; 107 Degree; 31.8; Silver
Dimension Threadless Stem: 110mm; 107 Degree; 31.8; SilverDimension

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

StarStarStarStarStar 4.8 of 5 ( 17 ) 4.8 of 5 stars average ( 17 reviews )

your price $32.00 + ships free

BuyBuyPART NUM 458435
Thomson X2 31.8 130mm 73/107 Degrees Black 1-1/8" Threadless Road Stem
Thomson X2 31.8 130mm 73/107 Degrees Black 1-1/8" Threadless Road StemThomson

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 $99.95 + ships free

BuyBuyPART NUM 875369
Thomson X2 31.8 130mm 80/100 Degrees Black 1-1/8" Threadless Road Stem
Thomson X2 31.8 130mm 80/100 Degrees Black 1-1/8" Threadless Road StemThomson

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 $99.95 + ships free

BuyBuyPART NUM 790414
Ritchey WCS 4-Axis 1 1/4" 31.8mm +/- 6 degree Black
Ritchey WCS 4-Axis 1 1/4" 31.8mm +/- 6 degree Black

Ritchey WCS 4-Axis Stems feature a contoured faceplate with four closely-spaced bolts, distributing flex and stress across a large clamping area, that … read more

your price $89.95 + ships free

BuyBuyPART NUM 458292
Zipp Service Course Road Stem 80mm, 84 or 96 degree, 31.8mm, Bead Blast Black
Zipp Service Course Road Stem 80mm, 84 or 96 degree, 31.8mm, Bead Blast Black

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

BuyBuyPART NUM 438520
Zipp Service Course Road Stem: 120mm; 73/107; 31.8
Zipp Service Course Road Stem: 120mm; 73/107; 31.8

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

BuyBuyPART NUM 858440
Velo Orange Tall-Stack Stem: 31.8, 1-1/8" Silver
Velo Orange Tall-Stack Stem: 31.8, 1-1/8" Silver

The VO Tall-Stack stem offers a clean look on a modern bike. The angle is 17 degrees, so the stem is level on most frames. The construction is cold forged … read more

your price $40.00 + ships free

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Thomson X4 1.5" 45mm 0 Degrees 31.8 Black
Thomson X4 1.5" 45mm 0 Degrees 31.8 BlackThomson

Thomson X4 One Point Five Stems feature custom heat-treated bolts with corrosion-preventative plating. Machined 7000-series extruded bar stock with … read more

your price $99.95 + ships free

BuyBuyPART NUM 355688
Crank Brothers Cobalt 3 Stem: 110mm; 96degree; Black with Red
Crank Brothers Cobalt 3 Stem: 110mm; 96degree; Black with Red

Crank Brothers Stems Cobalt is intended for cross country racing and riding Cobalt 3 stems have a simple no faceplate design and a single bolt steerer … read more

10% offretail $90.00 your price $81.00 + ships free

BuyBuyPART NUM 985997
Easton EA70 31.8 Stem 73/107 degree 70mm
Easton EA70 31.8 Stem 73/107 degree 70mm

Easton EA70 Stems 3D Forged EA70 Alloy Top Lock Faceplate provides secure and safe connection to alloy and carbon handlebars Distributed Stress Technology … read more

15% offretail $69.99 your price $59.49 + ships free

BuyBuyPART NUM 350266
Thomson

Thomson is leading with innovative design for two primary markets - aerospace and cycling.

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Salsa

"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."

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Dimension

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.

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Full Speed Ahead

"We move forward with a desire to deliver the best possible components to our customers and a determined spirit of competition."

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Answer

Answer BMX makes BMX racing components.

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fizik

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.

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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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