Hustler 3-Blade Aluminum Propeller – 13.25" x 21" | Right Hand Rotation

Hustler 3-Blade Aluminum Propeller – 13.25" x 21" | Right Hand Rotation

The Hustler 3-blade aluminum propeller at 13.25" x 21" is the highest-pitch option in the Hustler aluminum lineup for 4.25" gearcase engines. It’s built for boaters whose engine is running well below its optimal WOT RPM range on a lower-pitch prop — stepping up to 21" pitch pulls RPM down significantly and extracts maximum top-end speed from engines with substantial headroom to spare. Designed for 40–150 hp engines with 4.25" gearcases.

This is a specialized pitch selection. If you’re unsure whether 21" is right for your engine, compare against the 13.25" x 19" or 13.25" x 17" and confirm your current WOT RPM before ordering.

Key Features

• Stainless steel geometry in aluminum — Blade profiles drawn from the same stainless steel designs, giving this prop a performance edge over standard die-cast aluminum propellers.
• Squeeze cast construction — High-density casting produces stiffer blades with less flex, improving propulsive efficiency and fuel economy compared to conventional die-cast aluminum props.
• Tuned exhaust vents — Free-flowing exhaust ports reduce backpressure and water density around the blades at acceleration, improving hole shot and horsepower delivery.
• Ultracoat™ five-step powder coat finish — Superior corrosion and abrasion resistance compared to standard painted finishes. Keeps the prop looking sharp season after season.
• Wide engine compatibility — Fits Evinrude®, Honda®, Johnson®, Mariner®, Mercury®, MerCruiser®, Nissan®, OMC®, Parsun®, Suzuki®, Tohatsu®, and Yamaha® outboards and sterndrives.

Specifications

• Diameter x Pitch: 13.25" x 21"
• Blades: 3
• Material: Aluminum
• Rotation: Right Hand (Standard)
• Gearcase Fit: 4.25"
• Engine Range: 40–150 hp
• Hub System: 500 Series hub kit required (sold separately)

Hub Kit Required

A 500 Series MasterGuard installation hub kit is required and sold separately. Browse the lineup to find the right kit for your engine:

• MasterGuard Hub Kit 500
• Hub Kit 501
• Hub Kit 502
• Hub Kit 503
• Hub Kit 504
• Hub Kit 505
• Hub Kit 506
• Hub Kit 507
• Hub Kit 508
• Hub Kit 509
• Hub Kit 510

Refer to the application chart for your engine’s required kit number.

Compare Models

Not sure 21" pitch is right for your engine? Browse lower-pitch options in the same family:

• Hustler 3-Blade Aluminum – 13.25" x 19" RH — one pitch step down
• Hustler 3-Blade Aluminum – 13.25" x 17" RH — mid-range pitch, strong all-rounder
• Hustler 4-Blade Aluminum – 13.25" x 17" RH — better load handling and stern lift
• Express Mach3 – 13.25" x 19" Stainless Steel RH — stainless upgrade at 19" pitch
• Hustler 3-Blade Aluminum – 13.25" x 23" RH — one pitch step up, if available

Parts Desk Insights

Best use case: The 13.25" x 21" is a high-pitch specialist — recommend it only when a customer has confirmed their engine is running significantly below the bottom of its WOT RPM range on a 19" pitch prop and needs to pull RPM down further to reach optimal performance. This is most common on lighter, faster hulls with high-revving engines that have already stepped up through lower pitches. It’s not a good first-choice prop for most customers — if they haven’t already tried 17" or 19" and confirmed their RPM, start them there instead. For customers who want maximum top-end speed and are already at the right RPM on a 19", this is the logical next step. Always confirm engine make, model, year, gearcase size, and current WOT RPM — over-pitching an engine is a common and costly mistake.