A tone ring or reluctor ring is a notched circle ring that has a sensor attached to it for ABS and traction control. If one wheel is free spinning it will move at a different speed than the one that has traction letting the computer know the slippage is happening. For ABS when it detects the wheels are losing traction during braking it will pulsate your brakes to try and reduce the brake in friction from your tires to the ground. I would like this system on the H3 to still work so this is why I asked about distances on the rear sensor to the ring so if I have a new axle made the company can recreate the H3's rear tone ring setup. Hope this is accurate enough.
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