Facebook Twitter LinkedIn Pinterest Bluesky Threads Very small amount. I'm assuming it's just a bit of grease? O_o by RimBrakesCauseAutism Bicycling Biking Cycling
Oracolus on November 28, 2025 11:32 am it’s from the bike, not the trainer. it’s chain oil/grease spat when riding the bike
albertogonzalex on November 28, 2025 11:33 am This is just the gunk on your chain. You gotta clean your chain!
4 Comments
it’s from the bike, not the trainer. it’s chain oil/grease spat when riding the bike
See you on BCJ
This is just the gunk on your chain. You gotta clean your chain!
for the love of dogs … put something under your trainer…