The Riptide fits our 83mm blue wheels, along with 76mm, 83mm, or 90mm ABEC11 Flywheels.

97mm ABEC11 Flywheels will not naturally fit, but if you make modifications to the motor arm they can work. In general though we don't recommend this as accel / braking will be significantly reduced and the 90mm wheels provide all the cushion you'll need.

107mm ABEC11 Flywheels will not fit.