This compact first stage is a time-proven workhorse that has been embraced by the technical community around the world

An evolution of the most advanced regulator technology

this popular regulator ensures optimal hose routing while eliminating sharp bends

The RK3 HD is available in four sizes: Small

ideal for wetsuit diving

mtx r sidemount set dive regulator AccessoriesSafety This compact first stage isThe MTX R sidemount set is a super tough, rugged, high performance, go anywhere sidemount regulator configuration designed to meet the rigours of cold water and extreme sidemount diving. The MTX R is highly reliable and also very easy to service out in the field which make it an ideal choice for the expedition and exploration diver.