Turning Point 13x21 RH Mach4 Stainless Steel Propeller

The Turning Point Mach4 EX1/EX2-1321-4 uses four stainless steel blades in a 13-inch-diameter, 21-inch-pitch configuration. It rotates right-hand and is part of the Express range designed for responsive steering and acceleration. The four-blade layout can be attractive where secure grip under load is a priority. Its 21-inch pitch still has to be matched to the engine’s available power and RPM.

Turning Point uses its proprietary TP17 stainless steel and a cupped blade shape in the Mach4 series. Exhaust flow is directed through large openings in the propeller housing. Together, those features are intended to support performance while retaining a serviceable, interchangeable hub arrangement. Actual speed, lift, and fuel use will vary with the hull and engine configuration.

Before choosing this high-pitch model, check the boat’s normal load and full-throttle operating range. Confirm the 13-inch diameter and right-hand rotation, then use Turning Point’s chart to select the required separate hub kit. A hub made for another engine shaft can prevent proper installation even when the propeller housing looks identical. Browse additional stainless steel propellers in our marine catalog.

• Four-blade Mach4 design with cupped geometry
• TP17 stainless blades in a 21-inch-pitch housing
• Large through-hub exhaust passages
• Interchangeable system requires matching installation hub