From the factory, the Rush SR ships with a 14T front sprocket and a 44T rear sprocket. The front sprocket is easy to change with a 32mm socket, and you can buy extra sprockets directly from RAW.
See the attached gear calculator for ratios. In short, if you are redlining in 6th, you should run a longer (higher-tooth) front sprocket. If you are not even making it into 6th, you should consider a shorter sprocket.
Our owners have also enjoyed changing sprockets to avoid "awkward" shift points. Sometimes it is better to redline 6th for a moment and enjoy shorter ratios on the rest of the track!
These are community-tested starting recommendations. When in doubt, 14T is the safer choice — you'll occasionally rev-limit in 6th, but the tighter ratios are faster overall at most tracks.
Track
Recommended
Notes
Carolina Motorsports Park
14T
Technical track, short straights
Road Atlanta
15T
Long back straight
Gingerman Raceway
14T
Mix of low and medium speed
Watkins Glen
15T
Frontstretch and bus stop straight
Lime Rock Park
14T
Very technical, no long straights
Laguna Seca
14T
Corkscrew section punishes tall gearing
Rule of thumb: If you're hitting the rev limiter in 6th for more than a few seconds, go up one tooth. If you never make it into 6th, go down one tooth.
