Shimano vs PENN Spinning Reels: Saragosa SW A, Slammer IV and Spinfisher VII

Updated 2026-10-15 · Spec-based comparison (manufacturer data), not a hands-on review · Contains affiliate links

Shimano vs PENN is mostly a saltwater question. PENN tags the Slammer IV and Spinfisher VII on its own site for inshore, nearshore and offshore fishing. Shimano's sealed saltwater spinning reel at a similar price is the Saragosa SW A, which it sells for both inshore and offshore work.

The chart lines the three up where their gearing meets: Shimano's SRG5000SWAXG against PENN's SLAIV4500 and SSVII4500, all three at 6.2:1. Size numbers do not carry over between the two brands, and PENN publishes no equivalence, so the pairing here is by gear ratio and braid capacity, not by the number on the box.

Spec comparison

Weight (lower = lighter/cheaper)Saragosa SW 500015.9 ozSlammer 450015 ozSpinfisher 450012.8 ozMax dragSaragosa SW 500022 lbSlammer 450030 lbSpinfisher 450020 lbLine per turnSaragosa SW 500041 inSlammer 450040 inSpinfisher 450039.6 inGear ratioSaragosa SW 50006.2:1Slammer 45006.2:1Spinfisher 45006.2:1MSRP (lower = lighter/cheaper)Saragosa SW 5000$324.99Slammer 4500$329.95Spinfisher 4500$229.95
Shimano Saragosa SW A SRG5000SWAXG vs PENN Slammer IV SLAIV4500 vs PENN Spinfisher VII SSVII4500. Manufacturer specifications; MSRP is the US list price, not the street price.
Shimano Saragosa SW APENN Slammer IVPENN Spinfisher VII
MSRP range$324.99–$464.99$299.95–$469.95$209.95–$339.95
Sizes5000, 6000, 8000, 10000, 14000, 18000, 20000, 250002500, 3500, 4500, 5500, 6500, 7500, 8500, 105002500, 3500, 4500, 5500, 6500, 7500, 8500, 9500, 10500
Compared modelSRG5000SWAXGSLAIV4500SSVII4500
Weight15.9 oz (451 g)15 oz (425 g)12.8 oz (363 g)
Max drag22 lb (10 kg)30 lb (13.6 kg)20 lb (9.1 kg)
Gear ratio6.2:16.2:16.2:1
Line per turn41 in40 in39.6 in
Bearings5+18+15+1
Key featuresInfinity Drive, HAGANE Body, HAGANE Gear, X-Shield and X-Protect, Cross Carbon DragIPX6 sealed body and spool, Sealed Slammer drag with Dura-Drag, CNC Gear Technology with brass main gear, Hydrophobic Line Roller Bearing, Full Metal Body and sideplate, 8+1 stainless steel bearingsIPX5 sealed body and spool, CNC Gear Technology with brass main gear, HT-100 carbon fiber drag, Full Metal Body, Superline Spool

Why a Shimano 5000 meets a PENN 4500

Neither brand's size number is a measurement. Shimano's numbers do not equal spool diameter, and the PENN Reel Size Guide ties each size to a fishing type and species without mapping it to Shimano or Daiwa. Matching by the published line ratings works better than matching by the label.

On that basis the Saragosa SW A 5000XG and the Slammer IV 4500 are close neighbors. Both turn at 6.2:1, they recover 41 in and 40 in of line per turn, and both are rated for 30 lb braid (225 yd on the Saragosa, 250 yd on the Slammer). The Spinfisher VII 4500 shares the Slammer's spool ratings but sits a tier lower on drag and price.

  • Weight: Spinfisher VII 12.8 oz, Slammer IV 15 oz, Saragosa SW A 15.9 oz.
  • Max drag: Slammer IV 30 lb, Saragosa SW A 22 lb, Spinfisher VII 20 lb.
  • Braid at 20 lb: 320 yd on both PENNs, 245 yd on the Saragosa.
  • Mono at 10 lb: 320 yd on both PENNs, 240 yd on the Saragosa.
  • Bearings: 8+1 on the Slammer IV, 5+1 on the Saragosa SW A and Spinfisher VII.
  • Price: $229.95 (Spinfisher VII), $324.99 (Saragosa SW A), $329.95 (Slammer IV).

Sealing: IPX8 vs IPX6 vs IPX5

This is where the brands describe their reels most differently. Shimano says the Saragosa SW A body is IPX8-rated, backed by X-Shield gaskets and X-Protect labyrinth protection, with a waterproof Cross Carbon drag. PENN rates the Slammer IV body and spool IPX6 and the Spinfisher VII IPX5, and says the Spinfisher's sealing keeps saltwater out of the gearbox and drag.

On the IP code scale, the second digit 5 covers water jets, 6 covers powerful water jets and 8 covers continuous immersion under conditions the manufacturer specifies. Because the immersion conditions for an 8 rating are set by the manufacturer, and each company states its own rating, read these numbers as each maker's claim rather than a head-to-head lab result.

Drag systems and gearing

The Slammer's higher rating at this size goes with the sealed Slammer drag with Dura-Drag, which PENN uses from the Slammer IV 3500 upward and describes as bearing supported with a wider usable range. The Spinfisher VII uses HT-100 carbon fiber washers inside a fully sealed spool. Shimano's Cross Carbon Drag on the Saragosa SW A is described as waterproof, with a wide range of settings.

Inside, both PENNs list CNC Gear Technology with a brass main gear and a Full Metal Body. The Saragosa SW A pairs a metal HAGANE Body with cold-forged HAGANE Gear and adds Infinity Drive, which Shimano says raises winding torque under load over the previous Saragosa SW.

Bigger sizes: Saragosa 8000 vs Slammer 6500

One step up, the pairing repeats. The SRG8000SWAHG and SLAIV6500 both turn at 5.6:1 and recover 42 in per turn, and they weigh almost the same (23.8 oz vs 24.2 oz). The Slammer lists 40 lb of drag against 35 lb and holds more braid (410 yd of 40 lb vs 340 yd), while the Saragosa is cheaper at $344.99 against $379.95. The Spinfisher VII 6500 comes in lighter and cheaper still, at 22.3 oz and $289.95, with 30 lb of drag.

At the heavy end, the Saragosa SW A 18000 and 20000 list 49 lb of drag and the 25000 lists 44 lb, topping out at $464.99. The Slammer IV 10500 lists 60 lb at $469.95, and the Spinfisher VII 10500 lists 50 lb at $339.95.

Verdict: Shimano or PENN, by buyer

Pick the Slammer IV if drag is the deciding number. For about the same money as the Saragosa it lists more drag and more line at both compared sizes, plus 8+1 bearings, though its weights come from retailers and its sealing claim is IPX6.

Pick the Saragosa SW A if you want the strongest published sealing claim (IPX8) and Shimano's gearing package, or if the 8000 size suits you: it is the cheaper of the two there. Pick the Spinfisher VII if budget matters most; at the 4500 it is the lightest reel in this comparison and costs least.

For lighter inshore budgets, PENN's Battle IV is compared in Daiwa BG vs PENN Battle and Battle vs Spinfisher vs Slammer. Every series from both makers is on the Shimano lineup and PENN lineup pages, and our reel size chart explains each brand's numbering.

Where to buy

Shimano Saragosa SW A

PENN Slammer IV

PENN Spinfisher VII

FAQ

Is Shimano or PENN better for saltwater spinning reels?

Neither wins on every spec. At the matched size, the Slammer IV lists more drag (30 lb vs 22 lb) and more line than the Saragosa SW A, while Shimano states a higher sealing rating (IPX8 vs IPX6). The Spinfisher VII undercuts both on price and weight.

What PENN size matches a Shimano 5000?

Neither maker publishes a cross-brand chart. By the line ratings, the Saragosa SW A 5000XG lines up with the Slammer IV 4500: both are 6.2:1, and they are rated for 225 yd and 250 yd of 30 lb braid respectively.

Is the Saragosa more waterproof than the Slammer?

On the stated ratings, yes: Shimano says the Saragosa SW A body is IPX8, and PENN rates the Slammer IV IPX6. Both ratings are the manufacturers' own claims, and under the IP code the conditions for an 8 rating are left to the manufacturer.

Why are the PENN weights from retailers?

pennfishing.com does not publish reel weight. The Slammer IV weights here come from Bass Pro Shops and Tackle Warehouse spec tables, and the Spinfisher VII weights from Bass Pro Shops. Shimano publishes the Saragosa SW A weights in its own spec chart.

Sources (5)

Specs and facts on this page come from the manufacturers' published specifications and the pages below, checked on 2026-10-15. We have not hands-on tested these reels; this is a spec-based comparison.

  1. IP code (IEC 60529) water-protection levels, Wikipedia
  2. PENN Reel Size Guide (on the Battle IV product page)
  3. Shimano Saragosa SW A specifications
  4. PENN Slammer IV specifications
  5. PENN Spinfisher VII specifications