The Ultimate Rod Racks GunnelCore™ System Adjustable Gunwale System introduces two purpose-built backframe configurations: Hybrid and SLR (Silverback Low Rider).

Built around a modular mounting platform, GunnelCore™ System replaces previous fixed-width frame designs and delivers far greater adaptability to suit the wide variety of boat manufacturers and gunwale profiles in today's market.

GunnelCore™ System Hybrid Backframe

First choice for straight, simple installs

The Hybrid Backframe is designed for boats with straight gunwale lines and upstands over 12mm, offering a clean, efficient install with minimal adjustment required.

This is the preferred option for most runabouts, centre consoles, and alloy boats where the mounting surface is flat and uncomplicated.

Best suited for:

• Straight gunwale lines

• Flat or near-flat mounting surfaces

• Upstands over 12mm

• Fast, straightforward installations

GunnelCore™ System SLR Backframe (Silverback Low Rider)

Engineered for angled or tight gunwales

The SLR Backframe is designed for boats with angled gunwales, small upstands, or tight coaming clearances, where a standard straight mount isn't possible without correction.

Its low-profile geometry allows the rack to sit closer to the coaming and is designed to work seamlessly with GunnelCore™ System accessories, enabling precise tuning and alignment to suit complex hull shapes.

Best suited for:

• Angled gunwales

• Small upstands

• Tight reel or coaming clearance

• Installations requiring fine adjustment

GunnelCore™ System accessory compatibility:

• GunnelCore™ System Angle Bracket (SLR specific)

• GunnelCore™ System Levelling Bracket

• RackLoc™ Locking System

One System. The Right Fit.

Whether your boat has a clean, straight gunwale or a more complex angled layout, the GunnelCore™ System provides the flexibility to configure the correct backframe and accessories for a secure, balanced, and professional install.

Hybrid Model on STABICRAFT

GunnelCore™ System SLR Backframe with angled bracket added for a Senator or Profile type boat with an angled pocket