13-16 HONDA CRF450R: No Toil Super Flow Air Filter Kit No-Toil Super-Flo Filter Kit is now the weapon of choice when looking to increase throttle response and horsepower by removing the backfire screen. The No Toil Super-Flo Air Filter Kit will allow your machine to have more air for more horsepower. The Super-Flo Air Filter will replace stock filter and air restricting cage with a high-flow air filter and cage. The kit will fit securely and tight for a strong seal and will not be burdened with a back-fire screen. The Super-Flo Air Filter has a flame-retardant inner lining that will protect the bike and the rider from hot spark generated by the backfire from the machine.