MERCURY Spitfire 4-Blade Aluminum Propeller — 10.1" x 14" RH for 25–40 HP, Flo-Torq Hub, Improved Acceleration

The MERCURY Spitfire 4-blade aluminum propeller (10.1" diameter x 14" pitch, right-hand rotation) is a performance-driven replacement prop designed to boost acceleration and handling on compatible Mercury and Mariner outboards.

Built from Mercury's patented Mercalloy aluminum, the Spitfire 8M8026635 blends the control benefits of a four-blade design with speeds that approach many three-blade props. It ships with a Flo-Torq Reflex hub kit to help protect your drivetrain from common minor impacts and is engineered for use on a range of 25–40 hp Mercury and Mariner engines (see compatibility list below). Whether you're upgrading for better hole-shot, improved load handling, or increased responsiveness, this propeller is engineered to be a durable, serviceable option.

How does the Spitfire improve acceleration and handling?

The Spitfire uses aggressive blade geometry to increase bite through the water, translating to quicker acceleration and firmer control when turning or punching through chop. Compared with many three-blade props, it delivers notably faster off-the-line response while retaining steadier handling at low-to-mid speeds.

• 16–25% faster acceleration versus comparable three-blade props
• Four-blade layout increases wetted surface for better grip in turns
• Optimized blade rake and cupping balance top speed with control

Which engines and boats are compatible with this propeller?

This Spitfire is intended for Mercury and Mariner outboards in the specified horsepower ranges and model years. Always consult your engine owner's manual for exact thrust washer and prop nut part numbers before installation to ensure proper fit and safe operation.

• Designed for Mercury/Mariner 25–30 hp FourStroke BigFoot/Command Thrust
• Fits 30 hp TwoStroke and FourStroke models (2005 and newer)
• Also compatible with 40 hp outboards from Mercury/Mariner in applicable specs

What materials and safety features are included?

The propeller is cast from Mercalloy, a proprietary aluminum alloy tuned to be strong and flexible enough to survive minor impacts without immediate failure. It comes with Mercury’s Flo-Torq Reflex hub kit, which is designed to reduce drivetrain shock and help prevent damage from common strikes.

• Patented Mercalloy aluminum for a balance of strength and ductility
• Flo-Torq Reflex Hub Kit 835257K12 included for impact mitigation
• Robust casting and finished blade surfaces for corrosion resistance

How will this prop affect top speed and fuel economy?

The Spitfire is tuned to deliver stronger acceleration and improved handling while keeping top-end speeds competitive with many three-blade options. Fuel economy depends on load, throttle habits and hull type; expect slightly different consumption patterns when moving between three- and four-blade geometries.

• Top speed comparable to many three-blade props with better low-end thrust
• Acceleration gains may change throttle usage and short-trip fuel burn
• Best results when matched to engine and boat load for efficient operation

Who is this for: The MERCURY Spitfire 10.1" x 14" right-hand prop is aimed at anglers, small-boat owners and recreational boaters who want firmer handling, quicker acceleration, and a durable aluminum prop that tolerates minor impacts. Choose this prop if you operate a compatible Mercury or Mariner 25–40 hp outboard and value improved hole-shot and maneuverability without sacrificing competitive top speed. Always verify fitment with your engine manual and replace thrust washers and prop nuts as specified for safe installation.