Hi Markdnd,
Pleased to say the Flex3Drive SMART effector version is not a more expensive special. Its an extension of the existing wide range available, just havent gotten round to listing it as yet due to workloads, although I should prioritise this 🙂 Never enough hours.
You can easily order if you wish to by selecting the Kossel or XY G4 and include a buyers note stating you require for the SMART effector (or just email me a note), and the appropriate version will be provided. This will include all mounting hardware and the compact cooling solution based on 25mm fans which are supplied and included in the cost, as with all Flex3Drive variants.
Alternatively you can use 30mm fans, utilising the standard E3D hotend fan and shroud. Part cooling for 30mm fans will be along very shortly (wip), which will mount to the effector, alongside use of the E3D hotend fan and shroud.
Feel free to pm or email me with any questions.
J