# 3135B Dunbier Water-Toy Trailer Roller System Suits 3.5m Trailer | Marine Trailer Part

🔧 Product Description

  

Genuine Dunbier Marine Products Water-Toy Trailer Roller System - Bulk/Replacement Configuration - Part Number: 3135B

  

A replacement or bulk-supply water-toy roller system for compatible 3.5m-class trailers. It provides the roller and bracket arrangement used to convert or service a personal-watercraft trailer.

  

⚙️ Key Features

  

• Developed for personal-watercraft and compact water-toy trailers

• Adjustable roller placement supports different hull profiles

• Wobble rollers reduce point loading and assist self-centring

• Galvanised marine-trailer bracketry

• Supply configuration: bulk or replacement assembly; confirm included hardware

  

📏 Specifications

  

• Application: Water-toy / personal-watercraft trailer

• Roller and bracket quantity follows the supplied assembly configuration

• Cross-member size and mounting-hole centres must be confirmed

• Maximum supported craft mass remains limited by the trailer and axle rating

  

📋 Supplied Components

  

• Roller and bracket assemblies supplied under the 3135B configuration

  

🔄 Cross Reference & Related Parts

  

• Complete hardware-included configuration: Dunbier 3135

• Adjustable double-water-toy pair: Dunbier 3135AD

  

🚤 Compatibility & Application

  

• Compatible water-toy trailer frame and cross-member arrangement

• Confirm whether mounting bolts, U-bolts and nuts are required separately

• Set roller positions to the individual watercraft hull

  

🔌 Function

  

Supports and guides the watercraft hull during loading, unloading and road transport while distributing contact across multiple rollers.

  

Common signs of wear, damage or replacement required:

  

• Rollers are seized, split, worn flat or missing

• Brackets are bent or no longer symmetrical

• Fasteners or U-bolts repeatedly loosen

• Hull contacts bare metal or the trailer frame

• Watercraft loads unevenly or no longer tracks centrally

  

📦 Condition

  

• Genuine Dunbier Marine Products part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 397.8 AUD
- **Vendor:** Dunbier
- **Tags:** Dunbier Boat Trailers | Marine Trailer Parts & Accessories

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 397.80 AUD | In stock |

## Images

- 3135B Dunbier Water-Toy Trailer Roller System Suits 3.5m Trailer | Marine Trailer Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3135b-dunbier-water-toy-trailer-roller-system-suits-3-5m-trailer)
> Updated: 2026-08-03