Acme Automotive 3311 18x14 4-Blade Left-Hand Inboard Propeller 1.25" Bore

The Acme 3311 is a CNC-machined 4-blade inboard propeller designed for wake and ski boats requiring increased ballast performance. With an 18.00" diameter and 14.00" pitch, this left-hand rotation prop delivers powerful thrust, smooth cruising speeds, and improved fuel efficiency compared to traditional cast propellers.

Key Features:

• Diameter: 18.00"
• Pitch: 14.00"
• Blades: 4
• Rotation: Left-Hand (LH)
• Bore: 1.25" (1-1/4")
• Cup: .120"
• Hub Length: 3.750"
• Material: Nibral (Nickel-Bronze-Aluminum alloy)
• 100% CNC machined for precise balance and consistency
• Cast in a North American foundry and finish-machined in QS-9000 certified facilities

ACME's CNC machining process — introduced to the inboard propeller industry — eliminates the imprecision of hand-finished props, resulting in superior blade balance, reduced drivetrain vibration, and consistent on-water performance right out of the box. The 4-blade design provides greater blade surface area for more efficient power transmission, higher fuel economy, and more consistent speeds — especially on heavier, ballasted wake boats.