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(CRANKFLIP TIP: BMX) Check the tension in your chain - it should have some slack so those cranks can perform an entire rotation.
Sock colors inspired by a wad of chewed bubblegum and fresh hot New York City street tar. I once witnessed some poor bloke set a crankflip in motion with both of these substances stuck to one of his kicks and pedal. What ensued was a ropy, sticky entanglement of the highest order - let these socks be a warning to all.