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Fenwicks Fast Blast Degreaser



Easily applied, good value drive-train cleaner, capable of clearing out the most severe of road gunk

At every product is thoroughly tested for as long as it takes to get a proper insight into how well it works. Our reviewers are experienced cyclists that we trust to be objective. While we strive to ensure that opinions expressed are backed up by facts, reviews are by their nature an informed opinion, not a definitive verdict. We don't intentionally try to break anything (except locks) but we do try to look for weak points in any design. The overall score is not just an average of the other scores: it reflects both a product's function and value – with value determined by how a product compares with items of similar spec, quality, and price.

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Simply spray-on and rinse off: Fenwicks Fast Blast Degreaser is an easily applied and super efficient drivetrain cleaner.

Coming in a handy aerosol, Fast Blast gets to work straight away at dislodging the nastiest bits of road gunk off your drivetrain - just spray, wait 30 seconds, rinse and repeat until clean.

Road grime starts to dissolve immediately, and with a bit of agitation from an old tooth-brush chain-rings, mechs and chains are brought back to shiny life again. I, uh, deliberately, let my drive-train get extra manky to see how the spray coped, and it took two applications to get it looking smart again - about par for the course.

As with any spray it's easy to get carried away with applying it, but with restraint it's an effective and good value cleaner - just make sure you've got something underneath to catch the crud.


Easily applied, good value drive-train cleaner, capable of clearing out the most severe of road gunk.

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Make and model: Fenwicks Fast Blast Degreaser

Size tested: 500ml (200ml also sent £5.99)

Tell us what the product is for, and who it's aimed at. What do the manufacturers say about it? How does that compare to your own feelings about it?

Aimed at cyclists who are ride-rich but time poor, Fenwick's Fast Blast Degreaser is an ideal way to quickly and effectively clean your drive-train components, leaving it running smoother with the minimum of fuss. Fenwicks say it's "a real quick and easy way to remove the gunk build up on your cassette, it's solvent based so will act instantly at removing dirt and grime. The high powered aerosol will help blast away the dirt from the chain, cassette, mechs and chain rings. Can be sprayed directly on to the chain, cassette, mechs and chain rings. Wash off with water to leave a clean contaminant-free drive train. This product is not for use on any others parts of your bike."

Tell us some more about the technical aspects of the product?

Solvent-based, and aerosol delivered.

Rate the product for quality of construction:

It's an aerosol can so little can go wrong, a straw would be handy though for fine details.

Rate the product for performance:

It's got one job, and it does it effectively.

Rate the product for durability:
Rate the product for value:

As with anything, the more you use the quicker it runs out, and it's easy to get carried away with the spray. Little and often will go a long way though.

Tell us how the product performed overall when used for its designed purpose

Leave a cloth underneath the drivetrain because it's going to rain filthy fluid after just one spray. Leaves a nice and shiny drivetrain with a minimum of fuss.

Tell us what you particularly liked about the product

It does what it says on the tin.

Did you enjoy using the product? Yes.

Would you consider buying the product? Yes.

Would you recommend the product to a friend? Yes.

Overall rating: 8/10

About the tester

Age: 37  Height: 176cm  Weight:

I usually ride: Raleigh SP Race, Hoffman BMX  My best bike is: Raleigh SP Race

I've been riding for: Under 5 years  I ride: Every day  I would class myself as: Experienced

I regularly do the following types of riding: time trialling, commuting, touring, sportives, general fitness riding, Adventure-packing, crossing-countries


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