Picture for reference only, plenty of clearance al around . Again>> for big engine Speed drivers only -- Feed back from test drivers will determine if the item will be available . If not -- No problem--  I’m pretty sure a driver going for speed can find his own gears . I’m also pretty sure HPI will come out with bigger pinions for the R-40-- it’s only  matter of time wen  R40 drivers find out- a bit more speed on big tracks would be nice to keep the rest of the” Pack ” couple of car lengths behind . MOF a couple more teeth would help al shaft car driver’s from the RS4-3 to the Rally and MT -personally I would rather see taller diff gears --- 2.5 to 1 or less XXXX_would be nice.