Ernie Ball RPS-9 Reinforced Plain Strings / RPS Slinky (Set 2239)

The Ernie Ball RPS-9 Reinforced Plain / RPS Slinky (Model 2239) delivers the classic Slinky tone you expect, with added strength at the weakest point: the plain strings’ ball ends. This full 6-string set comes with the familiar .009–.042 gauge, combining toughness and performance in one package.

Features & Advantages

• Reinforced Plain Strings (RPS Technology) — The plain (unwound) strings feature a brass over-wrap at the ball end, reinforcing the twist to reduce slippage and breakage under stress.
• Nickel-Plated Wound Strings — The wound strings (D, A, low E) use nickel plating over a steel core for warm tone and compatibility with many pickups.
• True Slinky Feel & Tension — Maintains the flexibility and playability that Slinky sets are known for.
• Fresh-Pack Sealed — Ships in sealed packaging to protect from oxidation before use.

Benefits for You

If you’ve ever broken a plain string at the ball end (especially during bends or heavy play), RPS technology helps reduce that risk. You get the same feel, tone, and response you love in a Slinky set—but with extra durability on the most vulnerable strings. That means fewer mid-set repairs and more confidence when pushing your playing.

Specifications

• Model / SKU: 2239 (RPS Slinky Set, “RPS-9”)
• Type: 6-string electric guitar string set
• Plain Strings (E, B, G): Reinforced with brass over-wrap (RPS)
• Wound Strings (D, A, E): Nickel-plated wrap
• Gauge: 9-42 (commonly labeled “Super Slinky”)

Disclaimer: We do our best to keep listing details accurate, but human errors can happen. If any spec seems off or you need confirmation on compatibility or availability, let us know — we’ll make it right. Thanks for choosing Spotts Music Center in your musical journey!