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Penn Slammer IV Spinning Reel in Action

Penn Slammer IV Spinning Reel in Action

Whether you plan on catching striped bass at Cape Cod or tarpon in the Florida Keys, having a spinning reel that can withstand the toughest conditions and the most demanding fish is essential. Renowned for its reliable and top-of-the-line fishing gear, Penn Fishing is synonymous with high performance and durability in the angling world.

While Penn Slammer III was a workhorse of the event, the newly launched Penn Slammer IV takes things up a notch with significant improvements, including enhanced seals, a stronger handle, and better line lay. In this review, we’ll highlight the key features and upgrades that make the Penn Slammer IV Spinning Reel a must-have for beginners and seasoned anglers alike.

Specs of Penn Slammer IV Spinning Reel


Model range 2500-10500
Bearings 8+1
Composition Full metal body with a side plate and rotor
Gear Ratio 7.0:1 to 4.2:1
Weight 11 oz. to 24.2 oz.
Max Drag 20 to 40 lbs
Inches per crank 33” to 42”

Detailed Overview of Penn Slammer IV Spinning Reel


When discussing the Penn Slammer IV Spinning Reel, the first thing that captures your attention is its sturdy construction. When you’re out there battling a wily adversary, the last thing you want is your reel buckling under the pressure. This is the most common issue with reels made of plastic or inferior materials, as they tend to flex.

But you won’t have that problem with Penn Slammer IV. The reel’s frame, painstakingly engineered to avoid any flex, keeps the gear protected and perfectly aligned. This unwavering alignment significantly prolongs the reel’s lifespan and ensures a flawlessly smooth operation over time.

Plan on going for the compact 2500 size? Well, prepare to be impressed! Despite its sophisticated full metal body and side plate, Penn went a step further with this model, incorporating a graphite rotor for keeping the weight to a minimum. This doesn’t compromise the reel’s robustness though; it can still withstand formidable drag loads akin to its bigger counterparts. This means you can easily catch and land the heaviest of game fish without tiring out your wrist.


CNC Gearing

Another aspect that sets the Penn Slammer IV apart from other spinning reels is its state-of-the-art CNC gear technology. This innovative method, with Computer Numerical Control (CNC) at its helm, ensures unparalleled precision and consistency while reeling those underwater monsters.

While most DX series reels boast stainless steel main gear, the Slammer IV features a brass one, which comes with its own set of advantages.

For starters, brass is known for its strength and resistance to wear, making it a perfect choice for the main gear in a spinning reel. This ultimately results in longer-lasting performance and reduced wear under pressure. Furthermore, the exceptional corrosion resistance of brass allows it to stay in great shape even under harsh environments like saltwater fishing.

IPX6 Sealing Rating

An IPX6 Sealing Rating guarantees that the reel can withstand heavy jet spray from any direction without any harmful effects. This level of protection goes a long way in safeguarding the reel’s internals from water intrusion, be it during torrential downpours, rough sea conditions, or accidental splashes. The brand has also added an additional seal before the labyrinth seal that creates a protective barrier and prevents the rotor from damage.

Drag System

The Penn Slammer IV boasts a superior Dura-Drag system. Built to deliver a fishing experience like no other, the Dura-Drag™ system utilizes an advanced phenolic bonding agent that tightly binds the carbon-fiber washer to the eared washer. This helps reduce drag while simultaneously increasing the line capacity of your reel.

From our hands-on experience, this intricately engineered system truly shines when put to the test under extreme drag settings. The drag performs flawlessly, with virtually zero resistance. So, what does this mean when pulling a monofilament line and engaging the carbon-fiber disc drag for, say, 100 miles? Well, it’s simple — smooth and consistent performance. You might expect wear and tear after such a long haul, but the Slammer IV’s Dura-Drag™ system steadily reels the line, regardless of the load.

Ball Bearing System

The ball-bearing system is often considered the heart of a spinning reel, largely contributing to its smooth performance. The Penn Slammer IV is equipped with an 8+1 ball bearing system which, believe it or not, plays a significant role in enhancing your fishing experience.

When you hear “8+1”, the “8” stands for the number of ball bearings found inside various parts of the reel to reduce friction. The “+1” refers to the anti-reverse bearing that prevents the handle from spinning backwards, providing solid hook sets.

Now, you may wonder how instrumental is this 8+1 ball bearing system? Does it make a noticeable difference?

Interestingly, more bearings often correlate with smoother, higher-quality reel operations. However, it’s difficult to measure the impact of this feature quantitatively and notice a substantial difference in day-to-day use. This is especially true if you’re not constantly pushing your reel to its maximum drag limits, where the additional bearings might come more into play.


Hydrophobic Line Roller

The Penn Slammer IV spinning reel comes with a line roller that ensures smooth line retrieval while minimizing the risk of tangles and twists throughout extended use. Its hydrophobic surface repels water, preventing it from adhering to the surface. By incorporating hydrophobic technology in the line roller, the Penn Slammer IV keeps the line drier and in optimal condition, even when exposed to saltwater.

Bail Trip

Have you ever been fishing when, after many failed casting attempts, you realize you forgot to manually reclose the bail? Or tried to cast a heavy lure, and just as you released, the impact inadvertently caused the bail to close, causing your line to abruptly stop and possibly lead to a snarled, wasted cast? These issues can be incredibly frustrating and negatively impact the rhythm and productivity of your fishing day.

The Penn Slammer IV helps mitigate such problems through its robust manual and automatic bail trip system. Regardless of the weight of your lure or the vigor of your casting, the bail trip allows the angler to switch between the open and closed positions for smooth casting and retrieval.

Handle Knob

Designed for both comfort and functionality, the Eva handle knob is another noteworthy component of Penn Slammer IV. With an innate ability to resist slippage, this handle offers a secure grip when reeling in monster fish. Its resistance to wear and tear, UV degradation, and harsh weather conditions makes it an ideal choice for heavy-duty use, as well as for saltwater and freshwater fishing alike. Plus, the EVA handle knob adds minimal weight to the reel, ensuring that it remains lightweight and easy to handle.

Final Words

From its efficient drag system to the reliable bail trip, Penn Slammer IV leaves no stone unturned in delivering a superior fishing experience. Each of its features, no matter how subtle, seamlessly integrates with one another to ensure smooth operation, whether you’re trying to reel in a trophy fish or just trying to catch the next meal. And clocking it at less than $300, the Penn Slammer IV is definitely a great value for the money and a solid choice for any angler on a budget.

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