Overview
Our 4½″ (≈115 mm) Red Poly Centre Roller, featuring a 17 mm bore (P/N 91513), is a purpose-built soft polyurethane roller—perfect for fibreglass boat trailers. Made from UV‑stabilised red poly, it delivers smooth launching and retrieval while protecting delicate hulls from marks and abrasion.
Key Features
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4½″ (115 mm) length – compact yet effective for keel guidance
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17 mm bore – fits standard spindle brackets and rollers
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Red polyurethane – soft, non‑marking, UV-stable material
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Ideal for fibreglass hulls – gentle support without scratching
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Australian-compatible design – suited for local trailer hardware
Applications
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Designed for flat keel and cotton-reel style trailer setups
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Ideal as intermediate or auxiliary roller on small to medium trailers
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Commonly used with standard 17 mm spindle and washer combinations
Specifications
| Feature | Value |
|---|---|
| Roller Size | 4½″ (~115 mm overall length) |
| Bore | 17 mm |
| Material | UV-stabilised red polyurethane, non-marking |
| Part Number | 91513 |
| Use Case | Fibreglass hull protection, keel alignment support |
Shipping is calculated at checkout based on your location.