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

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Thomson Elite Seatpost Black 27.2 mm x 250 mm
Thomson Elite Seatpost Black 27.2 mm x 250 mmThomson

Over 40% stronger on ultimate strength test than the strongest production seatposts on the market. Over double the fatigue life of any other production … read more

StarStarStarStarStar 4.3 of 5 ( 3 ) 4.3 of 5 stars average ( 3 reviews )

your price $114.95 + ships free

BuyBuyPART NUM 693352
Thomson 29.8 Seatpost Collar - Black
Thomson 29.8 Seatpost Collar - BlackThomson

The Thomson Seatpost Collar has several features that make it distinct. The collar utilizes the Thomson Seatpost bolt, washer and barrel nut combination … read more

StarStarStarStarStar 3.5 of 5 ( 2 ) 3.5 of 5 stars average ( 2 reviews )

25% offretail $39.95 your price $29.95

BuyBuyPART NUM 603567
Thomson 28.6 Seatpost Collar - Black
Thomson 28.6 Seatpost Collar - BlackThomson

The Thomson Seatpost Collar has several features that make it distinct. The collar utilizes the Thomson Seatpost bolt, washer and barrel nut combination … read more

StarStarStarStarStar 3.5 of 5 ( 2 ) 3.5 of 5 stars average ( 2 reviews )

25% offretail $39.95 your price $29.95

BuyBuyPART NUM 898616
Thomson Elite Seatpost Black 30.9 mm x 410 mm
Thomson Elite Seatpost Black 30.9 mm x 410 mmThomson

Over 40% stronger on ultimate strength test than the strongest production seatposts on the market. Over double the fatigue life of any other production … read more

StarStarStarStarStar 4.3 of 5 ( 3 ) 4.3 of 5 stars average ( 3 reviews )

your price $114.95 + ships free

BuyBuyPART NUM 972863
Thomson Masterpiece Seatposts Black
Thomson Masterpiece Seatposts BlackThomson

The Thomson Masterpiece Seatpost is not for everyone. We at Thomson wanted to create the best seatpost possible without regard to cost. The … read more

your price $159.95 + ships free

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Thomson Elite Seatpost Black 26.8 mm x 330 mm
Thomson Elite Seatpost Black 26.8 mm x 330 mmThomson

Over 40% stronger on ultimate strength test than the strongest production seatposts on the market. Over double the fatigue life of any other production … read more

StarStarStarStarStar 4.3 of 5 ( 3 ) 4.3 of 5 stars average ( 3 reviews )

your price $114.95 + ships free

BuyBuyPART NUM 256538
Thomson Masterpiece Setback Seatpost - 31.6 mm x 350 mm - Black
Thomson Masterpiece Setback Seatpost - 31.6 mm x 350 mm - BlackThomson

The Thomson Masterpiece Seatpost is not for everyone. We at Thomson wanted to create the best seatpost possible without regard to cost. The … read more

your price $159.95 + ships free

BuyBuyPART NUM 708807
Thomson Face Plate For X2 31.8 Black
Thomson Face Plate For X2 31.8 BlackThomson

Thomson Face Plates Original replacement hardware for your Thomson product … read more

your price $9.95

BuyBuyPART NUM 363393
Thomson X2 31.8 110mm 73/107 Degrees Black 1-1/8" Threadless Road Stem
Thomson X2 31.8 110mm 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 $114.95 + ships free

BuyBuyPART NUM 235935
Thomson Road Alloy Handlebar 44cm 31.8 Black Aero Profile
Thomson Road Alloy Handlebar 44cm 31.8 Black Aero ProfileThomson

Our aluminum drop bars bring the performance, and dependability you have come to expect from Thomson. The lineup is available in 3 profiles, and varying … read more

your price $119.95 + ships free

BuyBuyPART NUM 834340
Thomson Direct Mount Stem 50mm Black
Thomson Direct Mount Stem 50mm BlackThomson

Thomson Direct Mount Stems Item Specifications Color: Black Intended Use: Mountain Bar Clamp Diameter: 31.8mm Stem Angle: 90deg Stem Length: 50mm … read more

your price $114.95 + ships free

BuyBuyPART NUM 325533
Thomson Elite Seatpost Black 30.0 mm x 410 mm
Thomson Elite Seatpost Black 30.0 mm x 410 mmThomson

Over 40% stronger on ultimate strength test than the strongest production seatposts on the market. Over double the fatigue life of any other production … read more

StarStarStarStarStar 4.3 of 5 ( 3 ) 4.3 of 5 stars average ( 3 reviews )

your price $114.95 + ships free

BuyBuyPART NUM 995373
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 ( 1 ) 4 of 5 stars ( 1 review )

your price $114.95 + ships free

BuyBuyPART NUM 672763
Thomson Elite Seatpost Black 30.8 mm x 367 mm
Thomson Elite Seatpost Black 30.8 mm x 367 mmThomson

Over 40% stronger on ultimate strength test than the strongest production seatposts on the market. Over double the fatigue life of any other production … read more

StarStarStarStarStar 4 of 5 ( 2 ) 4 of 5 stars average ( 2 reviews )

your price $114.95 + ships free

BuyBuyPART NUM 561604
Thomson MTB Aluminum Handlebar, 800mm, 10mm Rise, 9degree back, 5 degree up, 35.0 clamp
Thomson MTB Aluminum Handlebar, 800mm, 10mm Rise, 9degree back, 5 degree up, 35.0 clampThomson

Thomson MTB Aluminum bars are butted and tapered in many steps for optimal fatigue life. Ends of the bar are thickened from 1.4 to 1.6mm to resist damage … read more

your price $119.95 + ships free

BuyBuyPART NUM 225827
Thomson Elite Stem Shim, 1-1/8" To 1" Steerer, 37mm, Black
Thomson Elite Stem Shim, 1-1/8" To 1" Steerer, 37mm, BlackThomson

Adapts Thomson 1-1/8" ahead steerer clamp to accept a 1" threadless steerer Choose from 40mm or 37mm heights. The 37mm height shims are specifically … read more

your price $11.95

BuyBuyPART NUM 821539
Thomson 35.0 Seatpost Collar - Black
Thomson 35.0 Seatpost Collar - BlackThomson

The Thomson Seatpost Collar has several features that make it distinct. The collar utilizes the Thomson Seatpost bolt, washer and barrel nut combination … read more

StarStarStarStarStar 3.5 of 5 ( 2 ) 3.5 of 5 stars average ( 2 reviews )

25% offretail $39.95 your price $29.95

BuyBuyPART NUM 862994
Thomson Seatpost Bolt/Nut/Washer
Thomson Seatpost Bolt/Nut/WasherThomson

Thomson Bolt/Nut/Washer Seatpost Parts … read more

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

your price $4.95

BuyBuyPART NUM 311729
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 $114.95 + ships free

BuyBuyPART NUM 534897
Thomson X4 Mountain 31.8 70mm 90 Degrees Black 1-1/8" Threadless Stem
Thomson X4 Mountain 31.8 70mm 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 $114.95 + ships free

BuyBuyPART NUM 541817
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.

Weight

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.

The seatpost diameter must match to the seat tube diamater of your frame. If replacing a seatpost, you can usually find this measurement etched near the bottom of your current post.

Seatpost length is measured in millimeters. It is typically measured from the bottom of the post to the center of the rail mount.

Offset is often referred to as setback. This is the distance in mm that the clamp is offset from the center of the seatpost.

Seatpost Material

Rigid seatposts are the most common type of seatpost with no suspension or dropping capability.

Seatpost Clamp Style

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

Material

Handlebar Bar Clamp Diameter

Handlebar Width

Bar Rise

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