Boat Trailer 2.5″ Black Rubber Round Cap Keel Roller – 78mm Long, 17mm Bore, 85 Duro (SKU: RCBK2.5)

Name: Boat Trailer 2.5" Black Rubber Round Cap Keel Roller – 78mm Long, 17mm Bore, 85 Duro (SKU: RCBK2.5)
SKU: MT-RCBK2.5
Availability: InStock

$7.48

Compact 2.5-inch round cap roller for boat trailers. Made from 85 Duro black rubber with 17mm bore (fits 16mm shaft). Lightweight and tough, ideal for light-duty or edge support.

In stock

SKU: MT-RCBK2.5 Categories: BOAT TRAILER PARTS, KEEL ROLLER

ITEM SPECIFICS

2.5″ Round Cap Keel Roller – Compact Support Where You Need It

The RCBK2.5 is a 2.5-inch black rubber round cap roller designed for smaller boats, light trailers, or as an end cap or bumper support in a roller assembly. At just 78mm long and weighing only 0.19kg, it offers precise contact and soft protection where space is tight.

Featuring a 17mm bore for loose fit on standard 16mm shafts, this roller spins freely and provides reliable guidance during launch or retrieval. The 85 Duro hardness ensures it can take a hit without deforming, while the black rubber is durable and non-marking.

Product Specifications

(Swipe to view specs on mobile)

faq

Frequently Asked Questions (FAQ)

Q: Is this suitable for a 16mm shaft?
A: Yes – the 17mm bore provides a loose fit for free rotation on 16mm shafts.
Q: What’s a round cap roller used for?
A: Typically placed at trailer ends or side rails to provide additional keel or frame protection.
Q: Is this rubber UV-stable?
A: While not explicitly UV-rated, the rubber is durable and suitable for general marine use.
Q: Can I use it on aluminium boats?
A: Yes – the rubber is non-marking and safe for fibreglass or aluminium hulls.

Additional information

Parameter	Details
Model	RCBK2.5
Type	Round Cap Roller
Length	78mm
Bore	17mm (fits 16mm shaft)

Weight	0.5 kg
Dimensions	9 × 9 × 8 cm
Location	A-3-7
Featured Refinements	Boat Trailer Rollers
Manufacturer Part Number	RCBK2.5
Brand	MANUTEC

Guide-Recommendation

Usage Guide

How to install the RCBK2.5 roller:

Slide onto a 16mm spindle (17mm bore gives rotational clearance).
Secure with washers, pins or locking brackets.
Ideal for edge support or small trailer spaces.
Clean occasionally with fresh water to avoid rubber wear.

Evaluation & Recommendation

This roller is perfect as an accessory or secondary support on light-duty trailers. Not meant for primary keel contact but excellent for fine-tuning support placement.

✅ Recommended If You:

Need compact roller support in tight areas
Use 16mm shaft trailer setups
Want bump protection at rail ends

❌ Not Ideal If You:

Have large boats needing full-length keel rollers
Use shafts larger than 17mm
Need auto-centering or long surface rollers

A little guy that’s got your trailer’s back – literally!

🛞 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

Boat Trailer 2.5″ Black Rubber Round Cap Keel Roller – 78mm Long, 17mm Bore, 85 Duro (SKU: RCBK2.5)

Quantity

2.5″ Round Cap Keel Roller – Compact Support Where You Need It

Product Specifications

Related

Frequently Asked Questions (FAQ)

Usage Guide

Evaluation & Recommendation

✅ Recommended If You:

❌ Not Ideal If You:

About

Shop

My account

Help

PAYMENT METHODS

Boat Trailer 2.5″ Black Rubber Round Cap Keel Roller – 78mm Long, 17mm Bore, 85 Duro (SKU: RCBK2.5)

Quantity

2.5″ Round Cap Keel Roller – Compact Support Where You Need It

Product Specifications

Related

Frequently Asked Questions (FAQ)

Usage Guide

Evaluation & Recommendation

✅ Recommended If You:

❌ Not Ideal If You:

You May Also Like…

See you soon!