Boat Trailer 3″x4″ Grey Poly Wobble Roller – Grooved Non-Marking 25mm Bore (SKU: WRGG72X112X25)

WRGG72X112X25 – 3″x4″ Grey Grooved Poly Wobble Roller is a premium-grade, non-marking support roller crafted for reliable hull support during boat loading and unloading. With a slightly smaller profile than 4″ rollers, it is ideal for mid-size to smaller boats requiring smooth centring and damage-free handling.

This roller is constructed from durable grey polyurethane that resists UV, saltwater, and abrasion. The grooved ribbed surface improves boat centring and grip, helping reduce lateral movement while launching or retrieving on uneven ramps.

Product Features:

• Size: 3″ x 4″ (112mm height x 72mm width)
• Bore: 25mm
• Fits 20–22mm shafts with bush/sleeve
• Weight: Approx. 0.71kg
• Type: Grooved for hull guidance
• Material: Grey polyurethane – Non-marking, UV resistant
• Use: Side or keel roller on boat trailers

This roller offers a perfect balance between gentle boat handling and strong trailer performance. Whether you’re replacing old black rubber rollers or upgrading for better finish protection, this is your go-to choice.

FAQ

Q: What shaft size does this roller fit?

A: The bore is 25mm, suitable for 20–22mm shafts when paired with a bushing or sleeve.

Q: Is this roller safe for painted or fibreglass boats?

A: Yes, the non-marking grey poly is designed specifically for protecting delicate surfaces.

Q: What’s the difference between 3″x4″ and 4″x4″ rollers?

A: This 3″x4″ roller is lighter and more compact, ideal for smaller boats or trailers with limited clearance.

Q: Can I use this as a keel roller?

A: Yes, it works well as either a keel or side roller depending on your trailer setup.

Evaluation & Recommendation

The WRGG72X112X25 grooved poly roller is best suited for owners of small to mid-size boats who want a compact, non-marking solution for trailer support. It’s a smart alternative to rubber rollers that degrade quickly and leave marks on your boat hull.

Recommended for:

• Smaller fibreglass or aluminium boats
• Boat trailers with space constraints
• Side or keel roller applications needing protection and grip

Installation Tips:

• Ensure your shaft is 20–22mm or use a sleeve to adapt properly
• Test roller spin after installation – it should move freely without resistance
• Consider using stainless shaft washers for rust prevention

If you’re unsure whether this size suits your setup, feel free to reach out with your current roller size and shaft diameter – we’ll match you up!