Board Thread:General Nerf discussion/@comment-35070608-20180726051501/@comment-27306930-20180728225006

Alternatively, a simple flywheel replacement is also very easy to do. No physical mods necessary. For instance, these Worker Flywheels are about $12 USD, and they're quite nicely made drop-in replacements.

But simply changing the flywheels doesn't have a significant impact on the performance of a blaster. You really need to pair it with a motor and/or battery upgrade to see any appreciable difference. The reason being, the stock motors and alkaline batteries are already paired with stock flywheels for optimal performance. Those Worker flywheels for instance, work really nice with IMRs and a good motor like an 2S Fang or Honey Badgers.