- BLEMISHED ITEM, SOLD AS IS NO RETURNS (chip in black paint exposes metal underneath, cosmetic issue, does not affect spring functionality) - Constructed from proprietary Fox super light steel (SLS) - Unique surface treatment and stress relief process allows using a smaller wire diameter with fewer coils, all creating a lighter spring - 1.385" inside diameter fits Fox coil shocks, plus Marzocchi, DVO, MRP, X-Fusion and more - Spring Calculator https://tech.ridefox.com/content.php?c=springcalculator-embed