Serpent 48P & 64P spur gears
Serpent have introduced a full line of 48 and 64 pitch spur gears for electric touring cars. Super true running, they are made from durable nylon and are lightweight with 12 small and 9 large holes to make it easier to reach the cars motor mounts. The number of tooth is indicated on the gears and they are available in 64P in 4 tooth increments from 92T to 116T, while the 48P come in 3 tooth increments from 69T to 87T.
Source: Serpent [serpent.com]