Seat post-Mast Cap Trek Matched Matte Carbon & 7 mm Round Ears, available in white and black, is lightweight due to its carbon construction. It can be directly installed on Trek road bikes and is color-matched to provide a perfect aesthetic. It includes a 7mm saddle rails, with a 10mm ears sold separately. Order now!
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Offered in white and black and a variety of lengths and offsets, the mast cap includes hardware compatible with round saddle rails only. 7x10mm carbon rail-compatible hardware sold separately.
Ultra-light carbon construction. Direct fit on all Trek road bikes with round seat masts. Colour-matched for direct compatibility. One bolt head design offers easy fore-aft and infinite angle adjustment. Includes 7 mm round saddle clamp ears, 10 mm ears sold separately.
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