Choosing the right prop for a Mercury 115 2-stroke engine can unlock better acceleration, top speed, and fuel efficiency. This guide highlights high-quality aluminum propellers designed to fit Mercury engines in the 40-140 HP range, with a focus on models compatible with the 115 HP class. Each option balances durability, blade design, and RPM efficiency to support reliable boating performance across freshwater and saltwater environments.
Summary of selected products:
| Product | Brand | Diameter x Pitch | |||
|---|---|---|---|---|---|
| YOUNG PROPS 14.5 x 17 | Young Props | 14.5″ x 17″ | 15 | RH | 135-300HP Merc/Mercruiser Alpha/Bravo |
| MiBarco 10 3/8 x 13 | MiBarco | 10 3/8″ x 13″ | 10 | RH | 9.9-25HP Mercury Outboards |
| VQPROPs 13 1/4 x 17 | VQPROPs | 13 1/4″ x 17″ | 15 | RH | 40-140HP Mercury |
| YOUNG PROPS 13 1/2 x 15 | Young Props | 13.5″ x 15″ | 15 | RH | 40-140HP Mercury/Mercruiser |
| Mercury Spitfire 13 x 17 | Mercury | 13″ x 17″ | — | — | 75-125HP |
VQPROPs 13 1/4 x 17 Propeller for Mercury 40-140HP
The VQPROPs 13 1/4 x 17 propeller is designed for Mercury Outboard engines within the 40-140 HP range. It features a 15-spline tooth hub, right-hand rotation, and a three-blade configuration crafted from high-quality aluminum. Its durable construction aims to maintain top speed and acceleration while reducing engine wear, promoting better fuel efficiency and longer prop life. Ideal as a replacement or upgrade for Mercury enthusiasts seeking reliable performance gains.
MiBarco 10 3/8 x 13 Aluminum Prop for Mercury 9.9-25HP
MiBarco offers an OEM-style propurio for Mercury Outboard engines in the 9.9-25 HP range with a size of 10 3/8 inches diameter and 13 inches pitch. The prop uses high-quality aluminum and has a 10-spline tooth hub, right-hand rotation, and a three-blade design. It emphasizes durability and efficiency, aiming to support smooth RPMs, faster planing, and enhanced fuel use efficiency for small- to mid-powered Mercury applications.
YOUNG PROPS 13 1/2 x 15 Propeller for Mercury
Young Props’ 13 1/2 x 15 propeller is a 15-spline, right-hand rotation aluminum prop designed for Mercury engines. It supports 40-140 HP outboards and MerCruiser Alpha/Bravo One sterndrives, providing four blades for improved mid-range acceleration and solid RPM stability. It emphasizes durability and fuel efficiency, offering a practical balance between speed and economy for many Mercury-powered boats.
YOUNG PROPS 14 x 19 Propeller for Mercury 135-300HP
Young Props’ 14 x 19 propeller is a 15-spline, right-hand rotation aluminum prop designed for Mercury engines in the 135-300 HP range and Mercruiser Alpha/Bravo One. It features four blades for strong acceleration and top-end pace while prioritizing engine efficiency and durability. The hub kits are included, making it a versatile upgrade or replacement for high-performance Mercury setups.
Mercury Spitfire 13 x 17 Aluminum Prop
Mercury Spitfire is a direct option for Mercury 75-125 HP applications, featuring a 13″ diameter and 17″ pitch with Flo-Torq II Hub compatibility. While primarily marketed for Mercury, its performance-oriented blade design aims to deliver improved acceleration and top speed, along with solid RPM consistency. It’s a factory-backed choice for Mercury enthusiasts seeking reliable performance with minimal fitment concerns.
Y VQPROPs 13 Spline 13 x 14 Upgrade Propeller
This propeller from VQPROPs uses a 13-spline tooth hub and a 14-inch pitch in a right-hand rotation, designed for Mercury engines in the 25-70 HP range. It balances speed and reliability with improved blade geometry and a robust aluminum construction. It is positioned as a cost-effective upgrade that preserves RPM ranges while potentially extending engine life through improved efficiency.
Buying Guide: Key Purchase Considerations
- Engine compatibility: Confirm spline count, rotation direction, and gearcase compatibility with your Mercury 115 2-stroke setup.
- Material and build: Aluminum props offer good balance of durability and weight; stainless steel options exist for higher performance but are heavier and pricier.
- Blade count and pitch: Fewer blades typically reduce drag and improve top speed; more blades can improve mid-range acceleration and overall control at planing speeds.
- Gearcase and RPM: Ensure the prop changes won’t push RPM into redline; ideal props preserve RPM range for peak performance.
- Hub kit compatibility: Some props include hub kits; confirm they fit your particular motor model and transom setup.
- Maintenance and serviceability: Look for props with durable coatings and easy repair or replacement parts to extend life.
- Intended application: Consider the type of boat, water conditions, and load to select the most suitable pitch and blade count.