Turning Point Express® Mach4™ - Left Hand - Stainless Steel Propeller - EX1/EX2-1315-4L - 4-Blade - 13.5" x 15 Pitch

The Turning Point Express® Mach4™ Left Hand Stainless Steel Propeller (EX1/EX2-1315-4L) is engineered for boaters who demand reliability and performance in saltwater and brackish environments. As an angler or weekend cruiser, you'll appreciate a propeller that balances hole-shot acceleration with sustained top-end speed, all while resisting corrosion in demanding marine conditions. This 4-blade design is purpose-built for outboards requiring a left-hand rotation configuration, making it ideal for twin-engine setups or single-engine boats where counter-rotating props maximize directional stability and reduce torque-steer during hard acceleration.

Constructed from marine-grade stainless steel, the Mach4™ resists rust and saltwater degradation far better than aluminum alternatives, extending service life and maintaining efficiency season after season. The 13.5-inch diameter paired with a 15-pitch specification offers a sweet spot for mid-range displacement outboards—the pitch controls top speed while the diameter determines RPM range and load-carrying capacity. Four-blade geometry improves water grip, reduces cavitation, and delivers smoother operation at cruise and trolling speeds, a critical advantage when targeting finfish in shallow coastal waters or holding position over structure in variable conditions.

This propeller fits Turning Point EX1 and EX2 series engines and compatible outboard platforms within that bracket—verify your specific engine model and serial number before ordering. Left-hand props are essential for proper rotation direction; installing a right-hand propeller on a left-hand engine mount will cause immediate vibration and drag. At 15 pounds, the Mach4™ is a straightforward bolt-on replacement that requires no special tools or modification, making it accessible for DIY maintenance or quick swaps between performance and fuel-efficiency blade configurations.