My front big ring exploded while riding the trainer. Any idea what the replacement part for this is? Im newish to fixing bikes. I’m on a tight budget. Thanks!
Shimano 105 R7000, 50/34 (compact), 172.5mm length
by IDigHolesandCycle
My front big ring exploded while riding the trainer. Any idea what the replacement part for this is? Im newish to fixing bikes. I’m on a tight budget. Thanks!
Shimano 105 R7000, 50/34 (compact), 172.5mm length
by IDigHolesandCycle
3 Comments
[https://www.universalcycles.com/shopping/product_details.php?id=99817](https://www.universalcycles.com/shopping/product_details.php?id=99817)
A Shimano 105 R7000 50 tooth chainring is what you need. I would take this in to your local bike shop and try to get a warranty replacement. Shimano warranty on 105 is 2 years, but I would press my shop to contact their shimano rep even if this is over 2 years old. That’s a failure which should never happen unless there was previous heavy damage to the ring from a rock strike or something like that.
Do yourself a favor and clean the hell out of that chain and wipe down the ring a bit before you take your bike in. That’s just one less thing a company/shop can try to use to push blame on to you and deny warranty. This has all the trappings of a manufacturing defect if you didn’t run your chainring into a rock or curb in the past.
Your local bike shop might have one in stock, and if not, there are plenty of online retailers that have them (use an online bike retailer, not Amazon/ebay/aliexpress etc.), but try the warranty route first.
On a personal note, can you take & share some close up, in focus, straight on, pictures of the damage and any pieces you still have?
You just need a new big chainring, unfortunately these are not cheap but you may be able to get one second hand.