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Article published at:
July 08, 2026
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How Much Do Specialized SL9 Frame Bolts Weigh? (Titanium Upgrade Guide)
A breakdown of every frame bolt on the Specialized Tarmac SL9: seatpost clamp (M4), front derailleur hanger (M4×2), bottle cages (M5×4), headset cap (M3). Stock steel total 19.7g. Titanium replacements drop it to 8.3g, saving 11.4g. Covers frame vs groupset bolt differences, galvanic corrosion advantages of titanium in carbon frames, and install tips.
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