Mercury Marine has introduced SpitFire X7, the first propeller in the 75-115hp engine class to be marketed with Mercury’s proprietary X7 alloy, which is 30 percent stronger and four times more durable than conventional steel. Using the X7 alloy and building off design elements from the best-in-class aluminum SpitFire, the SpitFire X7 significantly improves acceleration, top speed and holding ability. The new SpitFire X7 is available at Mercury dealers in 15-inch, 17-inch, 19-inch and 21-inch pitches.

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