Thunder Torque Inserts

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DK CUSTOM PRODUCTS — Thunder Torque Inserts Thunder Torque Inserts are precision-engineered muffler baffle inserts that boost low- and mid-range torque while refining exhaust tone. Built for durability and performance, these inserts are a simple bolt-in upgrade for slip-on mufflers. Performance Gains: Increases low & mid-range torque, raises exhaust gas velocity, and improves inertial scavenging for quicker throttle response. Adjustable Sound: Fine-tune volume and tone to match your ride—more grunt without intrusive drone. Rugged Construction: High-temperature powder coat finish with stainless steel studs (5/16" diameter) for long-term corrosion resistance. Complete Kit: Includes all hardware for an E-Z installation—bolts into the end of most slip-on mufflers using the baffle bolt hole. Proven Design: Patented technology, manufactured in the USA for consistent quality and fit. Why choose Thunder Torque Inserts? Fast install, measurable midrange improvement, and customizable sound make these ideal for riders seeking a durable, high-performance exhaust enhancement without full system replacement. Show more