SpitFire X7 (14 x 13″) Mercury RH Propeller For 40hp Mercury/Mariner & 125hp Bigfoot Command Thrust Outboard, 48-8M0055547

£652.22

Specs:

  • Equipped with Flo-Torq II Hub kit #835257K1
  • Progressive rake for greater top speed and lift
  • Small diameter for superiior acceleration
  • Aggressive cup for exceptional holding
  • Standard with Performance Vent System (PVS)
  • If RPM is appropriate with the current 3-blade prop, replace with the same pitch
Fitment: Mercury Outboards: Mercury/Mariner 40 HP, Bigfoot Command Thrust 125 HP Outboard
  • 40-60 HP BigFoot/Command Thrust (CT) All Years
  • 75-125 HP 1978 and Newer
  • 15 Tooth Spline
  • Note: Flo-Torq III Hub Kit 835257K9 is recommended for 40-60 HP BigFoot/Command Thrust (CT) and 75-115 HP Optimax to reduce clutch rattle
Non-Mercury  Engines: Non-Mercury  Outboard,4-1/4′ Gearcase
  • Non-Mercury Outboard (4-1/4 in. Gearcase)
  • Suzuki/Johnson 90-115 HP 4-Stroke 2001-2008 – use hub kit 835283Q1
  • Suzuki/Johnson 100-115 4-Stroke 2009 and Newer 140 HP 4-Stroke – use hub kit 835283Q2
  • Suzuki 70-90 HP 4-Stroke 2009 and Newer – use hub kit 835283Q03
  • Honda 75-90 HP 1998 and Older – use hub kit 835277Q1
  • Honda 75-90 HP 1999 and Newer, 115-130 HP – use hub kit 835279Q2
  • Yamaha 50-100 HP – use hub kit 835272Q1
  • Yamaha 115-130 HP – use hub kit 835271Q2

 

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Description

The SpitFire X7 is the best performing propeller for Mercury 75-115 hp outboards equipped with the standard gearcase. The SpitFire X7 starts with attributes from the best-in-class aluminum SpitFire. It is then enhanced with the superior durability and performance only made possible with Mercury’s X7 alloy, which 30% stronger and 4x more durable than conventional stainless steel.

APPLICATION:
  • Mercury 40hp Outboard Propeller
  • Mariner 40hp Outboard Propeller
  • Bigfoot/Command Thrust 125hp  Outboard
  • Bigfoot/Command Thrust 60hp  Outboard
  • Yamaha 50hp  Outboard
  • Yamaha 100hp  Outboard
  • Yamaha 115hp  Outboard
  • Yamaha 130hp  Outboard
  • Honda 75hp  Outboard
  • Honda 90hp  Outboard
  • Suzuki 70hp  Outboard
  • Suzuki 90hp  Outboard
  • Suzuki 100hp  Outboard
  • Suzuki 115hp  Outboard
  • Johnson 90hp  Outboard
  • Johnson 100hp  Outboard
  • Johnson 115hp  Outboard

FEATURES:

Flo-Torq® II: Hidden Protection

Mercury’s Flo-Torq propeller hub might just be the most important part you never see. Not only does it flex during shift changes, reducing noise and vibration. If your prop hits an underwater object, it sacrifices itself to save your lower unit. Just pop in a new hub and you’re back on the water, no service call needed. The Flo-Torq hub also makes Mercury propellers compatible with most engines on the market while also providing unmatched corrosion protection.

 

Mercalloy®: Patented Performance

We couldn’t find an aluminum alloy good enough for our propellers. So we invented one: Mercalloy Aluminum. So unique it’s patented, Mercalloy makes for higher-strength castings. Which allows for thinner blades that create less drag. Result? Optimal performance, optimal durability, better boating.

 

Built with pride in Fond du Lac, Wisconsin. Trusted everywhere.

How do you make a Mercury® propeller? One exacting step at a time. It starts with a prop mold. Cast in specially engineered hot wax using a 5,000-year-old technique. Reinforced with two ceramic finishes in an application process that takes two full days. Steam-heated in an autoclave at 325 degrees Fahrenheit and 100 PSI of pressure. And finally placed in a burnout furnace at more than 2000 degrees Fahrenheit – a heat that requires employees to wear aluminized protective clothing. Strengthened and shock-proofed, the mold is ready. Liquid stainless steel now fills the cavity, heated to 3000 degrees and dispensed in 50-pound dollops. Five hundred pounds of the molten metal pass through, creating 24 Mercury propellers. The freshly cast props cool on carts for about an hour. Then jackhammer-like knockout machines, abrasive saws, and sandblasters remove all traces of residual ceramic and oxidation. Machinists hone and prepare props for specific applications. And grinders thin leading blade edges and sand other areas. Next step: surface refinement. Two hours in a drag finish machine smoothes peaks and valleys, creating the matte finish of a Bravo Three® or pod-drive prop. Other propellers move on to a burnishing stage, gaining a high-luster finish. Fitting props with Performance Vent System plugs is the final step. They are now ready to be customized for better hole shot – and to deliver the superior performance Mercury owners around the world count on.

A Higher Grade of Performance

Mercury transforms aluminum and stainless steel into the highest-quality, best-performing, most-durable marine propellers in the world. Also the best-selling, no surprise. Our experience, expertise, and proprietary technologies – Flo Torq®, Mercalloy®, X7® alloy, and PVS® (Performance Vent System) – give you a true competitive advantage. For best overall boat performance, there’s no substitute for a Mercury Propeller.

 

Flo-Torq SSR

The Flo-Torq SSR utilizes Mercury’s proven Soft-Shift Rubber technology in a quiet hub kit that provides an NVH upgrade for Flo-Torq II hub applications where the maximum reduction of noise, vibration, and harshness is desired.

SSR
Helps preventing shifting noise and propeller rattle while providing maximum durability for smaller and mid-range horsepower outboards.

SSR Solid
Helps prevent shifting noise and propeller rattle while providing maximum durability in higher performance applications with 1” propeller shaft.

SSR HD
Helps prevent shifting noise and propeller rattle while providing maximum durability in higher performance applications with 1.25” propeller shaft.

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Additional information

Weight5 kg
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