Home > Other Fun Stuff > Gadgets & Hacks

Tacx Crashpad protects your carbon derailleur with extended QR axle nut

7
Support us! Bikerumor may earn a small commission from affiliate links in this article. Learn More

Dutch trainer, water bottle & tool company Tacx has a tiny new gadget they say will save your bike’s fancy rear derailleur in a crash. The Tacx Crashpad is an extended alloy nut that threads onto the end of your standard QR skewer to protect the derailleur either in transit or if you wipe out.

Tacx Crashpad derailleur-protecting extended QR axle nut

The idea is that by threading this little 28-30g piece of machined aluminum in place of your regular QR axle nut, you get some added security for your expensive rear derailleur. Whether you drop your bike, transport it with the derailleur attached, or even if another rider hits you from behind, the extended Crashpad nut will divert the force away from the fragile derailleur & hanger (and into the frame at the dropout.)

The concept was to protect ever more expensive, yet apparently fragile carbon derailleurs. (The one’s I’ve broken suffered some serious abuse I don’t think this gadget would have helped.) But to get the benefit, you’ll have to ride around with this thing that looks like a tiny footpeg on the back of your pretty carbon road bike?!

Tacx made the Crashpad light but still work by turning it thin on the lathe from a light alloy, then giving it M5 threads to fit your typical QR skewer. For all those thru-axle adopters, sorry this won’t help you.

The Crashpad is available now for $19/15€ and comes in two lengths. A standard Long version fits most all rear derailleurs, and a Short version for more recent lower profile 2018+ Shimano Shadow derailleurs, both in a single high quality black anodized finish.

Tacx.com

Subscribe
Notify of
guest

This site uses Akismet to reduce spam. Learn how your comment data is processed.

7 Comments
Oldest
Newest Most Voted
Inline Feedbacks
View all comments
Zeus
Zeus
5 years ago

Well that’s just dumb. What good is saving a derailleur if you bust the frame where it’s supposed to mount??

asnem
asnem
5 years ago

looks like a nice low front light mount to me

Dolan Halbrook
Dolan Halbrook
5 years ago

Save weight with a fancy derailleur, add it right back protecting it.

Dean
Dean
5 years ago

Does Carbon frame cheaper than Carbon Derailleur?

Steve @ Gears 4 Good
5 years ago

The best use for that might be on a travel bike. Used with a dummy hub or axle, It would help protect the derailleur while packed up in the travel case.

Crash Bandicoot
Crash Bandicoot
5 years ago

I find the best bet for travel is to remove the derailleur entirely and wrap it up mitigates the likelihood that you bend the derailleur

Crash Bandicoot
Crash Bandicoot
5 years ago

*derailleur Hanger

Subscribe Now

Sign up to receive BikeRumor content direct to your inbox.

Subscribe Now

Sign up to receive BikeRumor content direct to your inbox.