Promax hydraulic brake hoses may detach from the levers on several hybrid and MTB models
(Image credit: Future)
Trek has announced a recall on several bike models fitting with Promax hydraulic brakes after finding the hydraulic brake hoses may become detached from the brake levers. The issue relates to Trek bikes that have been fitted with Promax Solve DSK-925 and Promax F1 DSK-927 hydraulic disc brakes. The issue is said to be caused by a loose fit between the hydraulic brake hose itself and the barb that is inserted into the brake lever end of the hose.
Trek says the fit can result in "improper clamping of the hose and ejecting or falling out of the brake lever". This could result in a sudden loss of braking ability and poses a crash risk.
According to a page on the United States consumer product safety commission around 96,000 units are potentially affected. 195 reports of the issue occurring have been logged so far in the United States but with no report of injury.
The Affected Promax Brakes (Image credit: Trek)
What bikes are affected?
Below is a table of the affected Trek bikes. The affected models are all hybrid bikes and mountain bike-style bikes from the past three years.
If you are unsure if your model is affected, you can enter your bike's serial number via this link on the Trek website.
Trek dealers will perform hose retention checks on bikes suspected of having faulty brakes. If the retention check fails a new olive and barb kit will be installed at no extra cost to the bike owner.
Trek will also provide owners who bring their bike for an inspection with a $10 store credit that can be used toward any Trek or Bontrager merchandise until the 31st of December 2023.
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Promax, the manufacturer of the brakes has also designed a revised version of the brake hose barb to provide a tighter fit during assembly. The issue only affects revision one of the brakes, not revision two or three.
It's important to add, this recall is not specific to Trek bikes. If you own a bike from another manufacturer and believe it may be equipped with the affected Promax brakes contact your local dealer or the manufacturer.
Tom joined the Cyclingnews team in late 2022 as a tech writer. Despite having a degree in English Literature he has spent his entire working life in the cycling industry in one form or another. He has over 10 years of experience as a qualified mechanic, with the last five years before joining Cyclingnews being spent running an independent workshop. This means he is just as happy tinkering away in the garage as he is out on the road bike, and he isn’t afraid to pull a bike apart or get hands-on with it when testing to really see what it’s made of.
He has ridden and raced bikes from an early age up to a national level on the road and track, and has ridden and competed in most disciplines. He has a keen eye for pro-team tech and enjoys spotting new or interesting components in the wild. During his time at Cyclingnews, Tom has already interviewed some of the sport's biggest names including Mathieu van der Poel, Tadej Pogačar and Alberto Contador. He's also covered various launches from brands such as Pinarello, Ridley, Specialized and more, tackled the Roubaix Challenge sportive aboard his own rim-brake Cannondale SuperSix Evo, tested over 20 aero helmets in the wind tunnel, and has created helpful in-depth buying advice relating to countless categories from torque wrenches to winter clothing.
