Piranha Propellers Performance Kit B-Series 4 Blade

Piranha Propellers Performance Kit B-Series 4-Blade — More Speed, Faster Plane, Complete On-Water Backup for 70–150HP Outboards & Cobra 400 I/O

You can't predict when you'll hit a submerged object — but you can be completely ready for it. The Piranha B-Series 4-Blade Performance Kit gives you everything in the Propulsion Kit, plus a Piranha Hydrofoil Stabilizer that delivers a real, measurable performance boost every time you're on the water. Faster plane. Better lift. Less strain on your engine. And if you ever do take a blade strike, you're back running in minutes.

Backed by a lifetime hub assembly guarantee and proudly Made in the USA, the B-Series 4-Blade Performance Kit is the smartest upgrade you can make to a 70–150HP outboard or Cobra 400 I/O — and MacombMarineParts.com has it in stock and ready to ship.

Application:
4" Gearcase Diameter — Cobra 400 I/O | 70–150HP Outboards

Kit Includes:

• 1 × Piranha Propellers Hub Kit
• 2 × Piranha Propellers Blade Sets
• 1 × Piranha Propellers Floating Prop Wrench Kit
• 1 × Piranha Propellers Self-Draining Gear Bag
• 1 × Piranha Propellers Hydrofoil Stabilizer

A complete Piranha Propeller consists of the Hub, 4 Blades, and the Cap.

Compatibility Notes:

• Evinrude / Johnson: Will NOT fit 4-cylinder engines with V-6 gearcases
• Evinrude 70HP (1999 and later): 4-stroke models only
• Suzuki 90/115/140HP: 4-stroke models only

Additional Information

The Hydrofoil Advantage: Get on Plane Faster, Run More Efficiently

The Piranha Hydrofoil Stabilizer bolts directly to the anti-ventilation plate on your drive — no drilling, no permanent modifications. Once installed, it generates hydrodynamic lift at the stern of your boat, which means:

• Faster plane — your boat gets up on plane quicker, and usually at a lower speed
• Better performance under load — especially useful when running heavily loaded or towing skiers
• Improved fuel efficiency — less time at high throttle getting on plane means less fuel burned
• Reduced porpoising — the stabilizer smooths out the ride in choppy conditions

If you've ever wished your 70–150HP outboard had a little more punch off the line, the hydrofoil is the most cost-effective performance upgrade available — and it's already in this kit.

Why the Performance Kit Beats a Spare Prop

You've heard it before — always carry a spare propeller. With Piranha, we take it further: carry spare blades, and carry the tools to swap them.

This kit gives you two full blade sets, a floating prop wrench, and a self-draining gear bag — everything you need to do a complete field repair in under 5 minutes, right on the water. Since you can't break more blades than are on the prop, two full sets means you're covered for any realistic strike scenario while keeping your propeller properly balanced and at the correct pitch.

MacombMarineParts.com stocks matching B-Series 4-blade sets if you ever need to restock — but with two sets in the bag, you're ready for anything the water throws at you.

Why the B-Series 4-Blade Outperforms Standard Aluminum Props:

• HydroBites technology — precision ridges built into every blade that improve hole shot, reduce vibration, and control ventilation in tight turns
• Shock-absorbing blade design — engineered to absorb the impact of a propeller strike and protect your lower unit, gears, and prop shaft from damage
• Aluminum-core center hub over-molded with high-strength aerospace composite for maximum durability
• 4-blade configuration — delivers smoother power delivery, reduced vibration, and better holding in rough water vs. a 3-blade
• Stronger than aluminum — built to outlast traditional metal props in both salt and fresh water
• Corrosion-resistant — no rust, no pitting, season after season
• Repair or re-pitch in minutes — no special tools required
• Saves on repair costs — replace only the blade, not the entire propeller
• Made in the USA — lifetime hub assembly guarantee included

Frequently Asked Questions

1. What's the difference between the Performance Kit and the Propulsion Kit?
Both kits include the same hub kit, two blade sets, floating prop wrench, and self-draining gear bag. The Performance Kit adds a Piranha Hydrofoil Stabilizer — a bolt-on device that mounts to your anti-ventilation plate and generates stern lift to help your boat get on plane faster and run more efficiently. If you want the backup system plus a real performance upgrade, the Performance Kit is the better choice.

2. How does the Hydrofoil Stabilizer install?
The Piranha Hydrofoil bolts directly to the anti-ventilation plate on your outboard drive or I/O — no drilling, no permanent modifications required. Installation typically takes 15–30 minutes with basic hand tools. It's fully removable if you ever want to take it off.

3. Will the Hydrofoil make a noticeable difference on my 70–150HP outboard?
Yes — the effect is most pronounced on boats that are frequently run under load or used for watersports. You'll typically see a faster plane time, a lower planing speed, and a smoother ride in choppy conditions. Heavily loaded boats and ski boats see the biggest gains.

4. Why does the kit include two blade sets instead of one?
Because one blade set gets you back on the water after a strike — two blade sets keep you there for the rest of the season. Piranha's modular design means you can swap a damaged blade in minutes on the water, but only if you have the spare with you. Two full sets ensure your propeller stays properly balanced and at the correct pitch no matter what happens.

5. What engines is the B-Series 4-Blade compatible with?
The B-Series 4-Blade is designed for 4" gearcase diameter applications — Cobra 400 I/O and 70–150HP outboards. Important fitment notes: Evinrude/Johnson will NOT fit 4-cylinder engines with V-6 gearcases; Evinrude 70HP (1999 and later) fits 4-stroke models only; Suzuki 90/115/140HP fits 4-stroke models only. If you need help confirming fitment for your specific engine, reach out to us at MacombMarineParts.com before ordering.

6. Why choose a 4-blade over a 3-blade propeller?
A 4-blade propeller delivers smoother power transfer, less vibration, and better grip in rough water or when running at lower RPMs. It's particularly well-suited for heavier boats, pontoons, and applications where smooth, consistent thrust matters more than top-end speed. If you're already running a 4-blade, the B-Series maintains that advantage while adding Piranha's field-proven modular repair system.

7. How does Piranha composite compare to a standard aluminum propeller?
Piranha's aerospace-grade composite is stronger than aluminum, lighter, and completely corrosion-resistant. When an aluminum prop gets damaged, you replace the whole thing. With Piranha, you replace only the damaged blade — in minutes, on the water — at a fraction of the cost. Over a season or two, the savings on repairs alone make Piranha the smarter investment for any boater running a 70–150HP outboard.