Turning Point 14x21 RH Mach4 Stainless Steel Propeller

For boaters who want four-blade handling in a higher-pitch propeller, the Turning Point Express Mach4 EX-1421-4 offers a 14-inch diameter and 21-inch pitch. It turns right-hand and uses TP17 stainless steel rather than aluminum construction. The fourth blade changes the propeller’s grip and load characteristics compared with a similarly sized three-blade model. Turning Point developed the Mach4 profile with cupping intended to support acceleration and control.

The 21-inch pitch makes correct engine matching especially important, since excessive pitch can hold RPM below the recommended range. Turning Point’s through-hub exhaust design allows flow through the center of the housing. The stainless blades use the same TP17 family developed for its Express high-performance line. On a heavily loaded boat, actual response will depend on engine torque, mounting height, hull, and trim.

Match the 14 x 21 size and right-hand drive rotation to your existing setup before deciding on this propeller. A compatible engine-specific hub kit is required and must be selected separately. The propeller and installation kit work together, but neither should be substituted without checking Turning Point’s fitment chart. See related stainless steel propellers in our catalog.

• Four-blade Mach4 handling profile
• 21-inch pitch option with right-hand rotation
• TP17 stainless material and through-hub exhaust flow
• Separate hub kit required for the engine shaft