# 3093 Dunbier Centreline Kit Including 20mm Square Leg Pair | Marine Trailer Part

🔧 Product Description

  

Dunbier Centreline Self-Centring Launch and Retrieve Kit with 20mm Square Legs - Part Number: 3093

  

A Dunbier centreline guide kit designed to improve retrieval by directing the keel toward the trailer centre as the boat enters the support system. The kit includes the centreline assembly with a pair of 20mm square-leg mounts and is designed to attach through compatible slide-frame mounts.

  

⚙️ Key Features

  

• Self-centring keel guidance

• Includes paired 20mm square-leg mounts

• Adjustable height and position

• Display-packaged retrofit system

• Reduces repeated ramp corrections during retrieval

  

📏 Specifications

  

• Leg section: 20mm square

• Mounting application: Dunbier 3252 slide-frame mount

• Kit quantity: One centreline system with left/right leg pair

• Roller and hardware contents are those supplied in the current package

  

🔄 Cross Reference & Related Parts

  

• Dunbier: 3093

• Compatible slide-frame mount: Dunbier 3252

• Glider self-centring kits: Dunbier 3108 and 3109

  

🚤 Trailer Compatibility & Application

  

• Suitable for compatible boat trailers with cross members and slide mounts that accept the 20mm legs

• Roller height must be set for the hull's keel depth and trailer geometry

• Not a substitute for properly adjusted side supports and keel rollers

  

🔌 Function

  

Provides an initial centreline target that guides the keel into the main roller or bunk system during retrieval.

  

Common signs of wear or replacement:

  

• Guide legs are bent or loose

• Rollers or blocks are worn

• Boat still enters consistently off-centre

• Slide mounts move on the cross member

• Guide contacts strakes or fittings instead of the keel

  

🛠️ Installation & Safety

  

• Install symmetrically about the trailer centreline

• Clamp to a structurally sound cross member

• Adjust with the boat partially loaded and safely supported

• Confirm the guide cannot damage the hull at full suspension travel

• Tighten all clamp hardware and recheck after ramp testing

  

📦 Condition

  

• Brand new Dunbier Marine Products trailer component

• Supplied as one complete centreline kit with a pair of 20mm square legs

• Supplied in original or equivalent packaging

## Details

- **Price:** 99.0 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 99.00 AUD | In stock |

## Images

- 3093 Dunbier Centreline Kit Including 20mm Square Leg Pair | Marine Trailer Part
- 3093 Dunbier Centreline Kit Including 20mm Square Leg Pair | Marine Trailer Part
- 3093 Dunbier Centreline Kit Including 20mm Square Leg Pair | Marine Trailer Part
- 3093 Dunbier Centreline Kit Including 20mm Square Leg Pair | Marine Trailer Part
- 3093 Dunbier Centreline Kit Including 20mm Square Leg Pair | Marine Trailer Part
- 3093 Dunbier Centreline Kit Including 20mm Square Leg Pair | Marine Trailer Part
- 3093 Dunbier Centreline Kit Including 20mm Square Leg Pair | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3093-dunbier-centre-line-kit-inc-20mm-sq-leg-per-pair)
> Updated: 2026-08-05