Flywheel gear ring 130t - 12volt,Flywheel gear ring 130t 12volt Easy to replace the broken, rotten or bad teeth on your flywheel and to let your starter motor turn around your engine superbly again. The 109 teeth fit all flywheels from the 6 volt configuration including 25 and 30 DIN Hp (thats 36SAE for our American friends) with the larger diameter starter motor. 130 teeth are used on later 6Volt engines (1967 and up) and all 12 volt starter engines. Always count your teeth before