bmax4iii gearing

[pagey27]

I have recently got myself a bmax4. I'm running a 7.5t motor with the standard 87 tooth spur. Which way should I go with the pinion so I can get more top end. Because it's very slow down the straight. Any information would be great and thanks In advance

[Suzukitudor]

Bigger pinion = less rotations of motor for 1 rotation of rear wheels = more speed.

[rcpower]

It depends, are you running boost settings or not on your speedo?

If you are not running any boost I would go with 22T-24T

If you can add some boost, go with 21T or 22T