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Article published at:
July 10, 2026
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How Much Does a Shimano Front Derailleur Spacer Weigh?
The front derailleur spacer and two mounting bolts weigh 4.0g — identical steel across Dura-Ace R9270, Ultegra R8170, and 105 R7170. Titanium replacements drop to 1.8g, saving 2.2g. Covers the swap process (no FD removal needed), and cumulative weight picture with other Shimano hardware upgrades (pulley bolts, limit screws, pivot bolts) totaling 20g+ from groupset hardware alone.
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