8″ Boat Trailer Black Rubber Keel Roller – 204mm Long, 75mm Diameter, 17mm Bore, Parallel Type (SKU: PRBK200X17)
$13.00 $26
Solid 8-inch black rubber keel roller with 17mm bore, designed in parallel style for even support. UV-stable, 85 Duro hardness. Ideal for 16mm shaft trailers and fibreglass/aluminium hulls.
Out of stock
8″ Parallel Keel Roller – Strong, Steady & Made for Sydney Conditions
The PRBK200X17 is a tough 8-inch black rubber keel roller in a classic parallel design. With a 204mm length, 75mm diameter, and 17mm bore, it’s perfectly suited for trailers using 16mm shafts and demanding solid keel support across flat or rounded hulls.
Its 85 Duro rubber construction means it’s built to resist deformation under pressure, while still cushioning your boat’s keel. With a total weight of 1.72kg, this roller means business — whether you’re launching at the boat ramp or bouncing over gravel tracks.
Designed for harsh marine environments around Australia, including sun-drenched Sydney shores, this roller is UV-resistant, non-marking, and tough as nails.
Product Specifications
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| Item | Details |
|---|---|
| Model | PRBK200X17 |
| Type | Parallel |
| Length | 204mm (8″) |
| Diameter | 75mm |
| Bore Size | 17mm (loose fit for 16mm shaft) |
| Hardness | 85 Duro |
| Material | Black Rubber – UV-stable, Non-marking |
| Weight | 1.72kg |
Why Choose This Roller?
- Solid support for mid-weight boats and trailers
- Parallel profile ideal for flat or slightly curved keels
- UV-resistant for long-term outdoor durability
- Easy to install and compatible with 16mm shafts
A serious roller for serious Aussie conditions – this is Sydney-tested trailer toughness.
Frequently Asked Questions (FAQ)
- Q: Will this fit a 16mm spindle?
A: Yes, the 17mm bore allows for smooth rotation on a 16mm shaft. - Q: What’s the difference between a parallel and dog bone roller?
A: Parallel rollers are straight across the surface, while dog bone rollers are tapered to help with keel centering. - Q: Is this roller UV-stable?
A: Absolutely — it’s made to withstand strong Australian sun exposure. - Q: Can this be used with aluminium boats?
A: Yes! It works well with both fibreglass and aluminium hulls as long as keel shape is compatible.
| Weight | 1.4 kg |
|---|---|
| Dimensions | 20 × 8 × 8 cm |
| Location | A-5-8 |
| Featured Refinements | |
| Manufacturer Part Number | |
| Brand |
Usage Guide
How to install and maintain your PRBK200X17 roller:
- Slide onto your 16mm spindle (loose fit by design).
- Position between keel supports using washers and locking clips.
- Ensure it’s centered and aligned with your boat’s keel.
- Rinse with fresh water after saltwater use to extend life.
Evaluation & Recommendation
This roller is a reliable pick for users who want straight-line support without hull centering features. Great for medium boats and standard trailers.
✅ Recommended If You:
- Use a trailer with 16mm shafts
- Have a medium-weight fibreglass or aluminium boat
- Need consistent keel support across the roller
- Operate in UV-heavy, salt-prone environments
❌ Not Ideal If You:
- Have a V-hull or sharp keel that requires centering
- Want a roller that “pulls” the boat into position (like Vee or Dog Bone style)
- Need a soft-contact roller for ultra-light or delicate hulls
Simple, strong, and Sydney-proof — a top-tier roller for real-world towing.
🛞 Scroll sideways on mobile • Tap to expand product category
🔳 Parallel Keel Rollers
| Product | Length | Width | Bore | Material | Hardness | Use | Advantages | Link |
|---|---|---|---|---|---|---|---|---|
| 12″ Parallel 26mm | 298mm | 75mm | 26mm | Black Rubber | 85 Duro | Large boats | Heavy-duty load support | View |
| 12″ Parallel 18mm | 298mm | 75mm | 18mm | Black Rubber | 85 Duro | Medium trailers | Balanced support | View |
| 8″ Parallel 26mm | 204mm | 75mm | 26mm | Black Rubber | 85 Duro | Mid-size trailers | Non-marking, stable | View |
| 8″ Parallel 20mm | 204mm | 75mm | 20mm | Black Rubber | 85 Duro | General trailer | UV stable, easy install | View |
| 8″ Parallel 17mm | 204mm | 75mm | 17mm | Black Rubber | 85 Duro | Fibreglass boats | Non-marking, UV-proof | View |
🐾 Dog Bone Rollers
| Product | Length | Width | Bore | Material | Hardness | Use | Advantages | Link |
|---|---|---|---|---|---|---|---|---|
| 12″ Dog Bone 26mm | 297mm | 82mm | 26mm | Black Rubber | 85 Duro | Large hulls | Centres boat naturally | View |
| 8″ Dog Bone 16mm | 200mm | 70mm | 16mm | Black Rubber | – | Light trailers | Compact & tapered | View |
🍬 Cotton Reel / Round Type
| Product | Length | Width | Bore | Material | Hardness | Use | Advantages | Link |
|---|---|---|---|---|---|---|---|---|
| 8″ Cotton Reel 20mm | 192mm | 75mm | 20mm | Black Rubber | 85 Duro | General trailer | Firm grip, compact | View |
| 2.5″ Round Cap 17mm | 78mm | – | 17mm | Black Rubber | 85 Duro | End bumpers | Lightweight edge guard | View |
🪒 Vee & Bow Rollers
| Product | Length | Width | Bore | Material | Hardness | Use | Advantages | Link |
|---|---|---|---|---|---|---|---|---|
| 8″ Vee Roller 19.5mm | 198mm | 68mm | 19.5mm | Black Rubber | 85 Duro | Hull centering | Natural alignment | View |
| 4″ Jet Ski Bow 14mm | 100mm | 70/55mm | 14mm | Black Rubber | 85 Duro | Jet Ski | Small bow cradle | View |
🌟 Special Materials (PVC / Short Sizes)
| Product | Length | Width | Bore | Material | Hardness | Use | Advantages | Link |
|---|---|---|---|---|---|---|---|---|
| KNOTT PVC Roller | 298mm | 95/61mm | 17mm | PVC + Aluminium core | – | Non-marking pro | Perfect for white hulls | View |
| Short Rubber 102mm | 102mm | 59.5mm | 16.5mm | Black Rubber | – | Mini trailers | Non-marking & compact | View |
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