ALL pro gears, regardless of ratio fit 5 series spools.

ALL 4.56, 4.88, 5.13...7.17 gears fit 5 series spools.

3.54, 3.73, 3.90, 4.10 and 4.30 street gears fit 3 series spools.

**Richmond 4.10 street gears fit 5 series spools.