Hope Pro 4 Replacement Freehub Body - Steel

Name: Hope Pro 4 Replacement Freehub Body - Steel
Brand: Hope
SKU: rfnhhbbb5f
Availability: InStock

This replacement freehub body is designed for the Hope Pro 4 hub, featuring a durable steel constr...

Best current price£82.99from Merlin Cycles

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Hope Pro 4 Replacement Freehub Body - 11 Speed / Campag

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Leisure Lakes BikesHope Pro 4 Freehub Assembly 11 Speed Steel

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Product Information

Full details

The Hope Pro 4 Steel Freehub Body is an essential upgrade for mountain bikers and riders using Hope Pro 4 hubs who require maximum durability under high-torque conditions. Engineered for riders who frequently suffer from cassette gouging on aluminum freehubs, this steel replacement offers superior strength and longevity. While it carries a weight penalty compared to the standard aluminum version, it remains the gold standard for long-distance reliability and heavy-duty drivetrain performance.

All features

Model Part Number	HUB540
Brand	Hope

Extended Product Information

FAQs

Will this fit my Hope Pro 2 or Pro 3 hub?

No, this specific freehub body (HUB540) is designed exclusively for the Hope Pro 4 hub series.

Is this compatible with SRAM cassettes?

This unit is designed for Shimano 11/12-speed spline patterns. It is not compatible with SRAM XD or Micro Spline cassettes.

Does it come with the pawls and springs installed?

The freehub body typically arrives as an assembly, but it is recommended to transfer your existing clean pawls or use new ones to ensure correct engagement.

Is there a weight difference?

Yes, due to the high-strength steel construction, it is heavier than the standard aluminum version provided with the hub.

Can I use this with a quick-release (QR) axle?

This specific MPN is designed for 12mm thru-axle hubs; you may need different end caps if you are trying to convert to QR, depending on your hub's specific configuration.

Troubleshooting

Freehub feels draggy or slow

Check if the pawls were over-greased or if the bearings are contaminated; clean with a light solvent and re-grease sparingly.

Freehub is difficult to install

Ensure the pawl springs are seated correctly and that the axle seal is properly aligned before pushing the body into the hub shell.

Pros and Cons

Pros

Significantly higher durability than aluminum alternatives
Prevents cassette cog bite and notching
Reliable 8.2-degree engagement speed
Includes high-quality stainless steel bearings
Comes with essential installation end cap

Cons

Heavier than the stock aluminum freehub body
Specific to Shimano 11/12-speed cassettes only
Compatibility limited exclusively to Hope Pro 4 hubs

Setup, Compatibility & Care

Installation of the HUB540 is straightforward for anyone familiar with basic hub maintenance. Ensure your hub is a genuine Hope Pro 4 model and that you are using a 12mm thru-axle setup. To install, remove the drive-side end cap, pull off the existing freehub body, and clean the pawl area. Apply a small amount of recommended lightweight hub grease to the pawls before sliding the new steel body into place. When cleaning, avoid harsh degreasers that can penetrate the sealed bearings, as this may wash away the factory-applied lubricant and reduce the lifespan of the steel components.