ESP100 is a universal pickup coil used on many Suzuki and Yamaha models. Hole center distance is 35mm pulser coil resistance is a universal 100 Ohms. Most CDI units will fire perfectly with the signal coming from this pulser coil. Warranty: One year. Fits LT230S Quadsport (85-88) LT250R Quadracer (85-92) LT500R Quadracer (87-90) Please Note:All electrical components must be fitted by a qualified technician.Before fitting electrical components ensure the root cause of the original failure has been addressed.The absence of either of points 1 or 2 above will void any warranty. Fits: Suzuki LT230E QUAD RUNNER 1988 LT250R QUAD RACER 1985-1991 LT500R 1987-1990