Boat Trailer 8″ Poly Self Centering Roller & Galvanised Standard Bracket Kit SB (SKU: BDA044)

This 8-inch Polyurethane Self-Centering Roller Kit is the perfect choice for fibreglass boats needing gentle yet firm keel alignment during launch and retrieval. Designed with non-marking UV-stable polyurethane, it ensures your hull stays scratch-free while providing strong centering action.

The roller has a 203mm width and 17mm bore size, fitting perfectly with a 16mm spindle. It comes with a standard galvanised steel bracket and 75mm x 50mm clamp-on stem adjusters for flexible and secure mounting to your trailer frame.

Unlike traditional fixed systems, this setup allows you to fine-tune the roller height and alignment using the adjustable stems, offering better support and protection for fibreglass hulls during both loading and towing.

An all-in-one solution offering adjustability, hull protection, and alignment ease. Whether you’re replacing an old roller or upgrading your trailer setup, this kit gives your boat the support it deserves.

❓ Frequently Asked Questions

• Q: Can I adjust the height of the roller?
  A: Yes, the kit includes clamp-on stem adjusters for vertical adjustment and secure mounting.
• Q: Is it suitable for fibreglass hulls?
  A: Definitely. The polyurethane material is non-marking and ideal for delicate surfaces like fibreglass.
• Q: What’s the bore size and spindle compatibility?
  A: The roller has a 17mm bore and works best with a 16mm spindle.
• Q: Will it rust over time?
  A: The bracket is hot-dip galvanised to resist corrosion in marine environments.

📌 Evaluation & Recommendation

• Recommended for: Boat owners with fibreglass hulls needing a soft-contact, self-aligning roller system with bracket adjustability.
• Not recommended for: Aluminium boat owners looking for a harder poly blend, or those using fixed-weld brackets only.

🔧 Installation Tips:

1. Clamp the stem adjusters securely onto your trailer’s cross bar.
2. Slide the roller onto the 16mm spindle and insert into bracket slots.
3. Adjust the stem height to ensure perfect keel alignment.
4. Tighten bolts securely and ensure free roller movement.
5. Test roller by slowly loading your boat onto the trailer.