You can add a 25mm fan for the motor. You can also lower the battery strap for the new LCG lipos from LRP, lightweight and low center of gravity batteries. Compatible with any aftermarket battery strap or with our own one. Standard battery strap needs to be shaved flat at the top rear side. If a fan is added, it is recommended a JConcepts Finnisher body for clearance. With other bodies you may need some trimming. M3x8 screws are used to fasten it to the gearbox, as the original ones (M3x6) are too short. A standard fan (10mm) or low profile one (7mm) can be used.