SQLab 612R Ergowave Carbon Saddle - Black - Carbon Rails - 140mm Wide YGroup_7421781737517 Material: Engineering grade polymer /

Material: Engineering grade polymer / Aluminium

You can probably leave them alone unless they're showing signs of corrosion and you want to get some freshies in there

Two mounting screws

Bite-Block Alloy HG and XD Freehub bodies resist damage from cassettes without the weight penalty of steel

SQLab 612R Ergowave Carbon Saddle - Black - Carbon Rails - 140mm Wide YGroup_7421781737517 Material: Engineering grade polymer /Shorter Narrower Lighter Faster. Engineered for a better race performance and at 125g this is the saddle to take you the distance. Raised rear allows for a better grip in the saddle as well as better power transmission. A strong midsection and narrow saddle gives more legroom increasing your maneuverability on the bike. The proven SQlab Ergowave form relieves the soft tissue area and prevents energy consuming bad posture. More longitudinal stiffness