Turning Point Express Mach4 EX1/EX2-1321-4 Stainless Propeller, 13 x 21, RH, 4-Blade

Four-blade performance with swept-cleaver design

The Turning Point Express Mach4 EX1/EX2-1321-4 pairs a 13-inch diameter and 21 pitch with right-hand rotation and TP17 stainless steel construction. Its four-blade swept-cleaver design is intended to support acceleration, cornering, load carrying, stern lift and rough-water handling.

The supplied series guidance describes the swept-cleaver design for 40–150 hp applications and highlights watersports, sterndrive boats, tri-toons and bay boats. This is application guidance, not confirmation of fit for every engine or boat in these categories. Actual hole shot, top speed, stability and reverse thrust depend on your boat, engine, load and setup.

Verify fit and select the required hub kit

A hub kit is required for installation. Use the Turning Point Selection Chart or Prop Wizard to verify this model's compatibility and select the correct hub kit for your exact engine, gearcase or drive before ordering.

The broader Express family includes models for 9.9 hp Bigfoot through 300+ hp outboard and sterndrive applications from Evinrude, Force, Honda, Johnson, Mariner, Mercruiser, Mercury, Nissan, OMC, Parsun, Suzuki, Tohatsu, Volvo Penta and Yamaha. This family-wide coverage does not establish compatibility for this specific propeller. The advertised lifetime warranty applies to MasterGuard installation kits, not to this propeller.

Material and performance claims

• TP17 stainless steel: Turning Point's proprietary material developed for Express Mach3 and Mach4 designs, with a focus on strength, durability and corrosion resistance.
• Advertised material comparisons: Turning Point describes 20% higher chromium content, almost 250% stronger material and five times greater durability versus competing or conventional stainless steel. The supplied copy does not identify comparison materials or test conditions.
• Large exhaust pathways: Designed to promote exhaust flow and reduce backpressure. The advertised 40% greater exhaust-flow area does not identify the comparison product.
• Reverse-thrust comparison: Turning Point reports up to 46% more reverse thrust than comparable designs. The supplied copy does not identify the comparison propellers or test conditions; this is not a guaranteed improvement for your boat.

Specifications

• Model: EX1/EX2-1321-4
• Part number: 31432130
• Series: Express Mach4
• Blades: 4
• Diameter: 13 inches
• Pitch: 21
• Rotation: Right-hand
• Material: TP17 stainless steel
• Box dimensions: 8 inches H × 15 inches W × 15 inches L
• Listed shipping weight: 14.55 lb
• UPC: 652480206696

California Proposition 65 warning

WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Documentation and videos

Quick Guide (PDF)
Brochure (PDF)