{"product_id":"mercury-spitfire-4-blade-aluminum-propeller-1","title":"MERCURY Spitfire 4-Blade Aluminum Propeller 12.8in x 17in Right-Hand — Quicker Acceleration \u0026 Better Handling","description":"\u003cp\u003e\u003cstrong\u003eThe MERCURY Spitfire 4-blade aluminum propeller (12.8\" diameter × 17\" pitch, right-hand rotation) is a performance-focused replacement prop that improves handling and acceleration for compatible Mercury and Mariner outboards.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for anglers and recreational boaters who want the control of a four-blade prop without sacrificing speed, the Spitfire blends aggressive blade geometry with Mercury's patented Mercalloy aluminum. It fits a wide range of Mercury and Mariner engines (40–60hp FourStroke BigFoot\/Command Thrust and 75–125hp TwoStroke and FourStroke models from 1978 onward) and ships with a Flo-Torq II hub kit to help protect your drivetrain from common impacts.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this propeller change acceleration and top speed?\u003c\/h3\u003e\n\u003cp\u003eThe Spitfire's four-blade layout plus tuned blade geometry gives stronger bite in the water, producing quicker hole-shot acceleration than many three-blade props while maintaining competitive top-end speeds. You’ll notice quicker plane and faster initial responsiveness, with a design that balances thrust and drag.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e16–25% faster acceleration compared to a comparable three-blade prop, per Mercury engineering\u003c\/li\u003e\n  \u003cli\u003eAggressive blade shape provides better thrust for quick planing\u003c\/li\u003e\n  \u003cli\u003e12.8\" diameter and 17\" pitch tuned for responsive midrange performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this prop fit my Mercury or Mariner outboard?\u003c\/h3\u003e\n\u003cp\u003eThe Spitfire is intended for Mercury and Mariner outboards in specific horsepower ranges: 40–60hp FourStroke BigFoot\/Command Thrust and 75–125hp TwoStroke and FourStroke models from 1978 and newer. Always verify fitment with your engine owner's manual and confirm required thrust washers and prop nut part numbers.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with 40–60hp FourStroke BigFoot\/Command Thrust engines\u003c\/li\u003e\n  \u003cli\u003eCompatible with 75–125hp TwoStroke and FourStroke engines (1978+)\u003c\/li\u003e\n  \u003cli\u003eIncludes Flo-Torq II Hub Kit 835257K1; check manual for thrust washer\/prop nut\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and features protect the prop and drivetrain?\u003c\/h3\u003e\n\u003cp\u003eMercury-built Mercalloy aluminum balances strength and ductility so the Spitfire resists common impacts without being overly brittle. The included Flo-Torq II hub kit cushions the drivetrain from hard stops and strikes, reducing the chance of costly gearbox damage in many minor-contact situations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePatented Mercalloy aluminum alloy for durable yet forgiving blades\u003c\/li\u003e\n  \u003cli\u003eFlo-Torq II Hub Kit 835257K1 included to absorb impact loads\u003c\/li\u003e\n  \u003cli\u003ePrecision casting and finishing for consistent balance and reduced vibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I choose pitch and rotation for my boat setup?\u003c\/h3\u003e\n\u003cp\u003eThis Spitfire is right-handed rotation with a 17\" pitch—optimized to deliver a balance of acceleration and cruising speed for the listed horsepower range. If you're uncertain which pitch or rotation best suits your load, hull type, and typical operating RPM, consult Mercury fitment guides or your dealer for a tailored recommendation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRight-hand rotation propeller—standard for most outboard drives\u003c\/li\u003e\n  \u003cli\u003e17\" pitch aimed at balanced acceleration and top speed for 40–125hp ranges\u003c\/li\u003e\n  \u003cli\u003eRefer to engine manual and RPM targets when selecting final pitch\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Boat owners who want sharper handling and faster acceleration without sacrificing top-end performance will benefit from the MERCURY Spitfire 4-blade propeller. It’s a practical upgrade for anglers, recreational boaters, and anyone running compatible Mercury or Mariner outboards who needs reliable, tested hardware with impact-protection features and OEM fitment. Check your engine manual for thrust washer and prop nut compatibility, and install with the included Flo-Torq II hub kit for best results.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this prop come with a hub kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the MERCURY Spitfire includes the Flo-Torq II Hub Kit 835257K1 to help absorb minor impacts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which engines is this prop compatible with?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Fits Mercury\/Mariner 40–60hp FourStroke BigFoot\/Command Thrust and 75–125hp TwoStroke\/FourStroke (1978+).\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"MERCURY","offers":[{"title":"Default Title","offer_id":48031038505121,"sku":"B00E63FMS2","price":533.71,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/6532\/5729\/files\/mercury-spitfire-front-view.jpg?v=1791420698","url":"https:\/\/canadiansporting.ca\/products\/mercury-spitfire-4-blade-aluminum-propeller-1","provider":"Canadian Sporting","version":"1.0","type":"link"}