About our SDM Extensions
Heavy Duty. Light Weight.
With by far the most comprehensive extension range on the market, we’ve got you tensioned no matter what style you’re looking for.
Take your choice from a winning line of Carbon and Aluminium mast extensions, in Heavy Duty (HD), PRO or PRO Stainless versions for super-efficient load distribution. All extensions are universal pin compatible except the Aluminium US-System, and feature large-diameter pulleys for slick downhauling power and minimal friction.
Compare RDM Extensions.
Check out this matrix comparison chart outining all the key features of our various models to assist you pick the right ones for your rigs and needs.