Overview
This 4½″ (~115 mm) Blue Nylon Centre Roller (Part No. 91312) is precision-machined from durable, UV‑stable HDPE nylon for high-endurance performance on aluminium-hulled trailers. Engineered with a 17 mm centre bore, it fits standard trailer spindle setups and offers improved resistance to abrasion and hull marking.
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Roller width: 115 mm (4½″)—compact yet stable support
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Bore size: 17 mm, compatible with standard trailers
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Material: Hard Blue Nylon (HDPE), non-marking and UV-resistant
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Use case: Optimised for aluminium boats and alloy trailers, resists wear and cracking
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Warranty & dispatch: Ships from QLD, backed by 12‑month manufacturer guarantee
Ideal For
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Mid-trailer alignment rollers on aluminium or alloy boat trailers
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Replacement roller for tiedown systems where non-marking material is key
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Riggers wanting reliable performance under frequent launching conditions
Specifications
| Feature | Details |
|---|---|
| Width | 4½″ (~115 mm) |
| Bore Size | 17 mm |
| Material | Blue Nylon (HDPE), non-marking |
| Design | Solid-cylinder flat-style roller |
| Part Number | 91312 |
Benefits
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High resistance to cracking and abrasion versus rubber alternatives
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Non-marking surface ideal for delicate aluminium hull coatings
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In stock and ready to dispatch across Australia from QLD
Shipping is calculated at checkout based on your location.