Pitmoto - X2IC300877 - Ignition Coil - 33cc/43cc/49cc (2 inch version) This coil fits most mid-sized pocket bikes and recreational gas scooters with the 33cc/43cc/49cc 2-stroke engine. Specifications: Mounting Holes: 2 inches or 52mm (eye to eye) Center metal portion: 11mm x 8mm *measurements are approximate Fit: 33cc/43cc/49cc 2-cycle. Note: This coil comes in two version. One has a bolt hole spacing of 2" and the other is 2.5". Please measure your original coil to assure you order correct part.