• ShockProof features microscopic solid medium to provide cushioning between gear teeth, while maintaining lower drag• For all H-D and aftermarket transmissions• This product dampens transmission noise (reducing the notorious shifting clunk found in these gearboxes), dramatically reduces temperature, provides thicker oil films between gear teeth and resists throw-off• For all aftermarket versions like Baker, JIMS, S&S, etc.• For all H-D trans with Evolution engines, Twin Cam engines, and latest 6-speed Cruise Drive
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