Rocket R58 Cinquantotto Dual boiler. Rotary pump. Direct water line. This is the endgame machine. The R58 Cinquantotto is Rocket's flagship single group — a dual boiler with PID control, a whisper-quiet rotary pump, and direct water line connection that keeps it running without refills. It's built for daily demand and barista-level consistency, whether you're pulling shots at home or keeping a small business caffeinated all day. Back in stock mid-March 2026. How It Works The R58's dual boiler system gives your brew water and your steam completely independent temperature circuits, both managed by PID controllers. That means your espresso extraction temperature stays exactly where you set it while your steam boiler delivers full power without interference. The rotary pump connects to your water line so the machine runs continuously — no reservoir to fill, no interruptions during service. It's the architecture of a commercial machine scaled into a single group frame. The Engineering Dual Boiler + PID Independent brew and steam boilers with individual PID control. Set each temperature separately and trust them to hold all day. Your espresso and your milk texture never compete for heat. Two boilers, two PIDs, zero compromise. Rotary Pump Commercial-grade rotary pump delivers smooth, even pressure while running significantly quieter than vibration pumps. Early morning shots without waking the house. Silent power, consistent extraction. Direct Water Line Plumb the R58 directly into your water supply and forget about tank refills. Essential for busy home setups and small commercial environments where downtime isn't an option. Continuous service, no interruptions. Temperature Stability PID-managed dual boilers hold their set temperatures through back-to-back shots and heavy steaming sessions. The consistency holds whether it's your first drink or your tenth. All-day precision without drift. Commercial-Grade Build Heavy stainless steel construction with professional internals built for years of daily use. The R58 is designed to handle real workload, not just weekend brewing sessions. Engineered for the long run. Who It's For Great Fit Serious home baristas who want dual boiler stability with rotary pump quiet and direct water plumbing. Small cafes and businesses that need single group reliability for steady daily volume. Anyone upgrading from an HX machine who wants fully independent temperature control for brew and steam. Not Ideal Buyers who want manual flow control or pressure profiling — the R58 is built for traditional extraction. Those without access to a water line who need reservoir-only operation. Budget-conscious shoppers who don't need the rotary pump and dual boiler upgrade. The R58 is arriving back in stock mid-March 2026. Reserve yours now or call 323-592-3303 to ask about availability and plumbing requirements.