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The PRO PLT Di2 Zero Alloy Seatpost is constructed from a high strength, yet lightweight, aluminium alloy. Due to these properties this particular alloy is commonly used in the aircraft industry. This one-piece seatpost has a 3D forged head for extra strength and durability. The single bolt side clamp has a secure and easy to use design. For fast setup the rear of the shaft has a height-indicator. The Shimano Di2 internal battery compatibility allows for tidy cable routing.One-piece Seatpost with a 3D forged headSingle bolt side clampHeight-indicator on the rearIn-line, zero offset clampWeight from 235 grams