Sidasu Adjustable Boat Trailer Winch Post — Fits 3"–4" Tongues, 5" Polyurethane Roller, Zinc-Plated

This winch post is designed for boat owners and trailer pros who need a durable, corrosion-resistant mounting solution that adapts to different bows and tow tongues. Built around a carbon steel core with a zinc-plated finish and a smooth polyurethane roller, the unit reduces hull wear during launches and retrievals while offering tool-friendly adjustability. The package ships complete with U-bolts, locking nuts, rear pins and fasteners so you can install it right away and pair it with most standard marine winches.

How does this winch post protect my hull during loading and unloading?

The included 5" blue polyurethane roller provides a low-friction contact point that cushions the boat’s hull and distributes pressure evenly while you winch. Polyurethane resists tears and skids better than rubber, which means fewer scuffs and less force transmitted to the bow during transit.

• 5" polyurethane roller for gentle, even hull contact
• Rounded roller edges prevent focused pressure marks
• Smooth rotation reduces scraping when loading

Will this fit my trailer tongue and winch setup?

The Sidasu post clamps to standard trailer tongues that measure between 3" and 4" in both width and height, so it fits most common single-axle and tandem-axle trailers. It is engineered to accept typical aftermarket winches, though the winch itself is sold separately—measure your tongue and winch bolt pattern before purchase for a perfect match.

• Compatible with 3"–4" wide trailer tongues
• Mounting flanges accept most winch foot patterns
• Comes with U-bolts and fasteners for immediate installation

How stable and secure is the mounting under load and on rough roads?

Stability comes from heavy-duty U-bolts and locking nuts that clamp the post to your tongue, plus rear pins and tie-down locations that reduce wobble. The combination of a thick carbon steel core and zinc plating gives the post both strength and long-term corrosion defense, keeping the connection secure mile after mile.

• High-strength carbon steel core for load-bearing rigidity
• Zinc-plated finish resists rust in marine environments
• Multiple tie-down points and locking hardware to minimize movement

How adjustable is the post and what boat sizes can it handle?

Height adjusts from 15.9" to 20.2" using the supplied hardware so you can position the roller to match small personal watercraft up to mid-size runabouts without swapping parts. The adjustability makes the stand practical for multi-boat use or trailer upgrades where bow height varies.

• Height range: 15.9"–20.2" for flexible bow alignment
• Simple hardware-based adjustment—no special tools required
• Suitable for compact jet skis through mid-size boats

Who is this for?

This Sidasu winch post is aimed at boat owners, marinas, and trailer maintenance technicians who need a rugged, corrosion-resistant post that installs quickly and adapts to varied bow heights. It’s especially useful if you already own a compatible winch or plan to select a separate winch later—buyers who prioritize long-term durability, stable mounting and hull protection will find this stand a practical upgrade for routine trailering and dockside launches.