Overview
The 8″ (~203 mm) Blue Nylon Centre Roller, Part No. 91321, is crafted from sturdy HDPE nylon, designed for use with aluminium boat trailers. Featuring a 17 mm central bore, this non-marking roller delivers smooth performance and hull protection—ideal for keel alignment and damping during launch and retrieval.
Key Features
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203 mm roller width (8″) — excellent keel support
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17 mm bore — compatible with standard trailer spindle systems
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Blue nylon (HDPE) — abrasion-resistant, non-marking, UV-stable
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Simple cylinder roller profile — reliable and built for tough conditions
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Australian-grade dispatch — fast shipping from QLD, backed by a 12‑month manufacturer warranty
Applications
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Keel guidance on aluminium or alloy boat trailers
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Great as bow or center support during launch/retrieval
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Easy retrofit; direct fit for worn nylon or rubber rollers
Specifications
| Feature | Detail |
|---|---|
| Width | 8″ (~203 mm) |
| Bore Size | 17 mm |
| Material | Blue Nylon HDPE, non-marking |
| Design Profile | Solid cylinder centre roller |
| Part No. | 91321 |
Benefits
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High-durability nylon resists cracking and wear, protects boat hulls
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Smooth surface ensures safe contact on aluminium hulls
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In-stock and ready to ship Australia wide from QLD
Shipping is calculated at checkout based on your location.