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Available 90 deg Silver 31.8 mm Bicycle Stems

These models are available for online purchasing and can be shipped directly to you.

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.

We define color as the main color of the item. It may have accents or highlights in other colors.

Bar clamp diameter is the diamater of the handlebar.

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Showing 15 products:

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 )

your price $114.95 + ships free

BuyBuyPART NUM 332850
Thomson X4 Mountain 31.8 50mm 90 Degrees Silver 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 50mm 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 )

your price $114.95 + ships free

BuyBuyPART NUM 465413
Paul Components Boxcar Stem, (31.8) 0d X 70mm - Silver
Paul Components Boxcar Stem, (31.8) 0d X 70mm - Silver

The perfect combination of stiffness, strength, and reasonable weight Made with US sourced 2024 aircraft alloy All screws are high … read more

your price $147.50 + ships free

BuyBuyPART NUM 699679
Thomson X4 Mountain 31.8 90mm 90 Degrees Silver 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 90mm 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 )

your price $114.95 + ships free

BuyBuyPART NUM 771847
Thomson X4 Mountain 31.8 70mm 90 Degrees Silver 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 70mm 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 )

your price $114.95 + ships free

BuyBuyPART NUM 672763
Paul Components Boxcar Stem, (31.8) 0d X 50mm - Silver
Paul Components Boxcar Stem, (31.8) 0d X 50mm - Silver

The perfect combination of stiffness, strength, and reasonable weight Made with US sourced 2024 aircraft alloy All screws are high … read more

your price $147.50 + ships free

BuyBuyPART NUM 284830
Box One Top Load Stem, 48mm x 31.8mm x 28.6, Silver
Box One Top Load Stem, 48mm x 31.8mm x 28.6, Silver

45 degree top loading design with a 31.8mm clamp for use with any standard MTB bar and over sized BMX bars Constructed from 6061-T6 aluminum … read more

your price $69.99 + ships free

BuyBuyPART NUM 669628
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 )

your price $114.95 + ships free

BuyBuyPART NUM 799050
Promax Banger 48mm Front Load Stem for 31.8mm Bars Silver
Promax Banger 48mm Front Load Stem for 31.8mm Bars Silver

Promax Stems Uses M6 bolts Item Specifications Bar Clamp Diameter (mm): 31.8 Color: Silver Reach: 48 Steerer Clamp Diameter: 1-1/8" … read more

your price $49.99 + ships free

BuyBuyPART NUM 786668
Thomson X4 Mountain Threadless Stem, 1-1/8", 31.8 x 120mm, Polished Silver
Thomson X4 Mountain Threadless Stem, 1-1/8", 31.8 x 120mm, Polished SilverThomson

One piece of solid 7000 series aluminum extruded billet, precision machined by Thomson in Macon, Georgia Features a traditional steerer clamp … read more

your price $114.95 + ships free

BuyBuyPART NUM 986033
Promax Banger 53mm Front Load Stem for 31.8mm Bars Silver
Promax Banger 53mm Front Load Stem for 31.8mm Bars Silver

Promax Stems Uses M6 bolts Item Specifications Bar Clamp Diameter (mm): 31.8 Color: Silver Reach: 53 Steerer Clamp Diameter: 1-1/8" … read more

your price $49.99 + ships free

BuyBuyPART NUM 386167
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 )

your price $114.95 + ships free

BuyBuyPART NUM 352970
Box One Front Load Stem, 53mm x 31.8mm x 28.6, Silver
Box One Front Load Stem, 53mm x 31.8mm x 28.6, Silver

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

BuyBuyPART NUM 833510
Deity Copperhead 50mm 31.8 Stem, Silver
Deity Copperhead 50mm 31.8 Stem, Silver

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

BuyBuyPART NUM 693175
Chromag RIZA Stem, (31.8) 90d X 38mm - Silver
Chromag RIZA Stem, (31.8) 90d X 38mm - Silver

CNC machined in Whistler, Canada from premium 6061 billet aluminum Features a new faded edge on the clamp face to help avoid hot spots and … read more

$13 offretail $135.00 your price $121.50 + ships free

BuyBuyPART NUM 880212
Thomson

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

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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.

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