Keep your widest keel and bow rollers spinning smoothly with a heavy-duty, rust-resistant 12-inch roller shaft kit.

Ensure smooth launching and stress-free loading for larger watercraft with this commercial-grade 12" Boat Trailer Roller Shaft Kit. Precision-engineered with a standard 5/8" Outer Diameter (O.D.), this solid steel axle is designed to span the distance and fit perfectly through any standard 12-inch spool roller, bow roller, or heavy-duty keel roller. Built to handle the extreme weight distribution of larger hulls, the high-strength steel rod resists bending under load. Complete with two heavy-duty Pal Nuts (push-on caps), this kit provides a secure, permanent installation that locks your roller firmly into the bracket.

Key Features

• Perfect Fit for 12" Rollers: Tailored specifically to provide the exact length and clearance required for standard 12-inch marine keel, bow, or spool rollers.

• Heavy-Duty 5/8" Outer Diameter: Crafted from solid high-tensile steel to prevent sagging, bowing, or warping under the weight of large, heavy watercraft hulls.

• Secure Pal Nut Fasteners Included: Comes complete with two high-grip cap nuts that bite firmly onto the steel shaft ends for a permanent, vibration-proof hold.

• Marine-Grade Corrosion Resistance: Finished to fight off rust, scale, and corrosion caused by constant saltwater exposure and harsh coastal elements.

Technical Specifications