Bike Stems

Strong but lightweight, Thomson stems create the ultimate riding experience. Bike stems are available for mountain, gravel, road, and BMX.

X4 : 31.8 & 35mm MOUNTAIN

Since its inception the X4 has been the best combination of strength and weight available. Constructed from one solid piece aircraft grade aluminum we didn’t sacrifice torsional stiffness or strength for a few grams of weight savings.  The X4 offers precise steering and tracking for the ultimate rider control, all while executed in an elegant design. So strong, however extremely lightweight, enduro and downhill riders can run Thomson confidently, yet X4 is light enough for cross country and cyclocross.

  • Spacer Kit

    Spacer Kit

    $29.95
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  • Elite 35mm X4 Stems

    Elite 35mm X4 Stems

    $121.95
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  • Bike Stem Caps | Bike Top Caps

    Stem Top Caps

    $9.95$14.95
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  • Steerer Shims

    Steerer Shims

    $11.95
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  • Thomson Direct Mount Stem

    Direct Mount Stem

    $121.95
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  • BMX Bike Stem

    BMX Stems

    $121.95
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  • Stem Replacement Clamps

    Stem Replacement Clamps

    $14.95$39.95
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  • 31.8mm X4 Dress Up Kit

    31.8mm X4 Dress Up Kit

    $42.95$55.00
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  • Elite 31.8mm X4 Stems

    Elite 31.8mm X4 Stems

    $121.95$134.95
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