This is a Stator / Magneto Coil which applies to (and is not limited to) 50cc 70cc 90cc 110cc 125cc automatic ATV and Dirt Bike engines. Most commonly used for 50cc to 125cc ATVs, this is the second of two very popular stator configurations for these engine types (the alternate stator used in similar engine types has 6 points and 5 coils). Approximate dimensions: Outside Diameter: 82.1mm. Centre Hole Diameter: 33.3mm. Mounting Hole (centre-centre): 70mm. Bolt Hole: 6.7mm. Harness Length: 33cm.