Overview

The Attwood Marine 11230-1 is an adjusting bow roller for boat trailers with automatic adjusting roller systems. It has a smooth natural-rubber body with a steel insert, measures 4-1/4 in. long by 4-3/8 in. in diameter, and fits 3/4 in. shaft hardware.

On a trailer, this roller helps the keel move forward toward the bow stop and roll off more cleanly at launch while keeping hull contact on rubber instead of bare hardware. The pre-drilled center hole helps line it up on the shaft during replacement, which is useful when you are matching an existing roller on a keel-roller setup.

Key features

• Made for boat trailers that use automatic adjusting roller systems
• Smooth roller surface helps the boat move more easily during loading and launching
• Natural rubber helps buffer hull contact and reduce scuffing at the roller point
• Steel insert adds support where the roller mounts on the shaft
• 4-1/4 in. length and 4-3/8 in. outside diameter for matching an existing roller size
• Fits 3/4 in. shaft hardware
• Pre-drilled center hole helps with quick, accurate mounting on compatible assemblies

Compatibility and fit

This roller is a good match when you are replacing a worn adjusting roller on a trailer and need the same basic size and shaft fit. Check the roller length, outside diameter, shaft diameter, and the style of your current automatic adjusting assembly before ordering. If your trailer uses a different shaft size or a different roller profile, this part will not be the right match.

It suits keel-roller trailer layouts where the boat is guided on rollers during launch and retrieval. Trailer owners who load and launch often will appreciate keeping the roller size consistent across the setup so the hull tracks the same way each time.

Installation and upkeep

The roller mounts on 3/4 in. shaft hardware through the pre-drilled center hole. Once installed, it should turn freely without binding and sit square in the bracket so the keel meets the full rolling surface.

After launching, inspect the roller for cracks, flat spots, or damage that can stop it from turning smoothly. That matters most on trailers that spend time in sun, road spray, and repeated ramp use, where a worn roller can make loading harder and put rougher contact on the hull.