Originally Posted by
dragonracing
88/52 largest gear combo you can put on the arc without hitting front motor mount. But getting from 45 to 51 and an 88 spurnwill suffice.
You can use part# R102507 on the front of the motor mount to replace the one that gets in the way of pinions.
http://www.shopviperrc.com/ProductDe...ctCode=R102507