This 4 inch cotton reel style keel and bow roller is designed to provide smooth and stable support for boat hulls during loading, launching and transport. Manufactured from heavy duty black rubber, it offers cushioning and durability suitable for both fibreglass and aluminium boats. The roller features a 100mm body length and an 18mm bore designed for use with 16mm spindles, making it compatible with a wide range of boat trailer setups.

Product Features

- 4 inch cotton reel style keel or bow roller
- Heavy duty black rubber construction for durability and cushioning
- 18mm bore suitable for 16mm spindle applications
- 76mm width provides stable hull contact
- 100mm length for improved support during loading
- UV stable material designed for marine environments
- Helps guide and protect the keel or bow of the boat during trailer operation

Benefits and Usage

This roller assists with centering and supporting the boat on the trailer, reducing wear on the hull and making ramp loading easier. Its shape helps prevent scraping by offering a smooth rolling surface as the boat shifts into alignment. It is ideal for replacing worn or damaged bow and keel rollers to maintain consistent trailer performance.

Why This Product Is a Good Choice

The heavy duty rubber construction provides high resistance to impact, abrasion and UV exposure. The roller is designed to rotate freely on compatible spindles, helping to reduce strain on the hull during loading, especially on uneven ramps. Its measurements fit many common roller brackets found on Australian boat trailers.

Installation Guidance

1. Ensure the trailer is secure and the boat removed before installing the roller.
2. Remove the existing roller and inspect the spindle for wear or corrosion.
3. Slide the new roller onto the 16mm spindle through the 18mm bore.
4. Confirm the roller spins freely without binding or resistance.
5. Once installed, test by loading the boat slowly to check alignment and hull support.

Who This Product Suits

This roller suits boat owners, marine repairers and trailer builders upgrading or maintaining keel and bow support systems. It is effective for both recreational and frequent-use trailers that require smooth hull contact and stable loading performance.

Additional Notes

Regularly check all rollers for cracking or stiffness, especially after extensive saltwater use. Replace rollers showing significant wear to ensure continued hull protection.