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Thomson 31.8- mm Bicycle Stems

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

Bar clamp diameter is the diamater of the handlebar.

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Showing 33 products:

Thomson Elite X4 Mountain Stem - 50mm, 35mm, 0 Degree, Aluminum, Black
Thomson Elite X4 Mountain Stem - 50mm, 35mm, 0 Degree, Aluminum, BlackThomson

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

Black31.8 mm50 mm28.690 degThreadless
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Thomson Elite X4 Mountain Stem 40mm +/- 0 degree 31.8 1-1/8 Threadless
Thomson Elite X4 Mountain Stem 40mm +/- 0 degree 31.8 1-1/8 Threadless Thomson

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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Silver31.8 mm40 mm28.690 degThreadless
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Thomson Elite X4 Mountain Stem 40mm +/- 0 degree 31.8 1-1/8" Threadless
Thomson Elite X4 Mountain Stem 40mm +/- 0 degree 31.8 1-1/8" Threadless Thomson

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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm40 mm28.690 degThreadless
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your price $114.95 + ships free

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Thomson Elite X4 Mountain Stem 70mm 100 Degrees 31.8 1-1/8" Threadless Black
Thomson Elite X4 Mountain Stem 70mm 100 Degrees 31.8 1-1/8" Threadless BlackThomson

31.8 bar clamp diameter with smooth edges for carbon bar compatibility Machined 7000 series extruded bar stock Bolts are custom heat treated with … read more

StarStarStarStarStar 4 of 5 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm70 mm28.6100 degThreadless
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Thomson Elite X4 Mountain Stem 70mm 100 Degrees 31.8 1-1/8" Threadless Silver
Thomson Elite X4 Mountain Stem 70mm 100 Degrees 31.8 1-1/8" Threadless SilverThomson

31.8 bar clamp diameter with smooth edges for carbon bar compatibility Machined 7000 series extruded bar stock Bolts are custom heat treated with … read more

StarStarStarStarStar 4 of 5 ( 2 ) 4 of 5 stars average ( 2 reviews )
Silver31.8 mm70 mm28.6100 degThreadless
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your price $114.95 + ships free

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Thomson Elite X4 Mountain Stem 80mm 100 Degrees 31.8 1-1/8 Threadless Black
Thomson Elite X4 Mountain Stem 80mm 100 Degrees 31.8 1-1/8 Threadless BlackThomson

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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm80 mm28.680, 100 degThreadless
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your price $114.95 + ships free

BuyBuyPART NUM 103480
Thomson Elite X4 Mountain Stem 80mm 100 Degrees 31.8 1-1/8 Threadless Silver
Thomson Elite X4 Mountain Stem 80mm 100 Degrees 31.8 1-1/8 Threadless SilverThomson

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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Silver31.8 mm80 mm28.680, 100 degThreadless
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your price $114.95 + ships free

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Thomson X4 80mm 90d 31.8 Black
Thomson X4 80mm 90d 31.8 BlackThomson

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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm80 mm28.690 degThreadless
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your price $114.95 + ships free

BuyBuyPART NUM 755644
Thomson X4 Mountain 31.8 100mm 100 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 100mm 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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm100 mm28.6100 degThreadless
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your price $114.95 + ships free

BuyBuyPART NUM 626800
Thomson X4 Mountain 31.8 100mm 100 Degrees Silver 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 100mm 100 Degrees Silver 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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Silver31.8 mm100 mm28.6100 degThreadless
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your price $114.95 + ships free

BuyBuyPART NUM 202837
Thomson X4 Mountain 31.8 100mm 90 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 100mm 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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm100 mm28.690 degThreadless
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your price $114.95 + ships free

BuyBuyPART NUM 428098
Thomson X4 Mountain 31.8 100mm 90 Degrees Silver 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 100mm 90 Degrees Silver 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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Silver31.8 mm100 mm28.690 degThreadless
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your price $114.95 + ships free

BuyBuyPART NUM 352970
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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm110 mm28.6100 degThreadless
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your price $114.95 + ships free

BuyBuyPART NUM 647349
Thomson X4 Mountain 31.8 110mm 100 Degrees Silver 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 110mm 100 Degrees Silver 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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Silver31.8 mm110 mm28.6100 degThreadless
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Currently Sold Out

your price $114.95 + ships free

InfoInfo
Thomson X4 Mountain 31.8 110mm 90 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 110mm 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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm110 mm28.690 degThreadless
Ships FreeShips Free

your price $114.95 + ships free

BuyBuyPART NUM 822012
Thomson X4 Mountain 31.8 110mm 90 Degrees Silver 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 110mm 90 Degrees Silver 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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Silver31.8 mm110 mm28.690 degThreadless
Ships FreeShips Free

your price $114.95 + ships free

BuyBuyPART NUM 799050
Thomson X4 Mountain 31.8 120mm 100 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 120mm 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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm120 mm28.6100 degThreadless
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your price $114.95 + ships free

BuyBuyPART NUM 178334
Thomson X4 Mountain 31.8 120mm 90 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 120mm 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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm120 mm28.690 degThreadless
Ships FreeShips Free

your price $114.95 + ships free

BuyBuyPART NUM 967460
Thomson X4 Mountain 31.8 130mm 100 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 130mm 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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm130 mm28.6100 degThreadless
Ships FreeShips Free

your price $114.95 + ships free

BuyBuyPART NUM 623442
Thomson X4 Mountain 31.8 130mm 90 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 130mm 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 ( 2 ) 4 of 5 stars average ( 2 reviews )
Black31.8 mm130 mm28.690 degThreadless
In StoreIn StoreShips FreeShips Free

your price $114.95 + ships free

BuyBuyPART NUM 724444
Thomson

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

See all Thomson

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

In Store products are available to view in our showroom. In Store orders usually ship the same or next business day.

Buy this product and your entire order ships for free.

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