Thudbuster ST Seat Post Elastomer - Extra Soft
Replacement elastomer insert for G4 LT Thudbuster Seat Posts, Pedal to saddle distance remains nearly constant through travel, Minimum frame to top of rail height, 94 mm, Aluminum mast and links with rebuildable stainless pivots, PTFE coated steel bushings, Thudbuster ST comes with Soft, Medium, and Firm elastomers in the box, with Medium elastomer installed, Stiffness:, The relative durometer (stiffness) of the elastomer is denoted by number of dots printed on the elastomer, Extra Soft — 1 Dot — Rider under 100 lb, Soft — 2 Dots — Rider weight 100 lb - 150 lb, Medium (installed from factory) — 3 Dots — Rider weight 150 lb - 200 lb, Firm — 4 Dots — Rider weight 200 lb - 250 lb, Extra Firm — 5 Dots — Rider weight 250 lb - 330 lb