5 pinion gear is recommended

4v 5200mah 35c Lipo Battery w Deans Plug

these screws thread in the same way as the factory hardware for easy adjustment

mock radiator out back and four unobtrusive screws out front that hide an under-body frame

They also increased the width there too

Powerhobby Dust Cover Waterproof Protective Cover FOR Traxxas Maxx Sprint Parts 5 pinion gear is recommendedPowerhobby Dust Cover Waterproof Protective Cover FOR Traxxas Maxx Features: Made of high quality nylon, durable and strong Quick release design, no need to remove after installation. To install and remove the battery, just unzip the zipper Magic stick fixation, easy to disassemble Easy to clean, rinse at will Covers protect your RC Car from dirt, dust, stones and water