We've received questions about whether it's possible to fit a standard size shorty pack battery into our ONE.05 FWD. The answer is yes! You can comfortably fit a 25mm standard height battery, such as the RUDDOG Racing 6300mAh pack (as shown in the picture), into the ONE.05 FWD. However, please remember you'll need the Iris FWD-specific servo horn to ensure sufficient clearance for the steering link.