DK Custom Products Thunder Torque Inserts - Insert Fits 2" Diameter & Larger SET

DK Custom Products Thunder Torque Inserts are tuning inserts that bolt into the end of slip-on mufflers to increase low and mid-range torque and adjust exhaust tone on V-twin motorcycles. Made in the USA with stainless steel studs and a high-temp powder coat finish, they use patented technology to increase exhaust gas velocity and inertial scavenging.

Features

• Bolts into slip-on muffler baffle hole — no welding required
• Stainless steel 5/16" studs with high-temp powder coat finish
• Increases low and mid-range torque
• Adjustable sound volume and tone
• Increased exhaust gas velocity and inertial scavenging
• All mounting hardware included
• Made in the USA

Specifications

• Brand: DK Custom Products
• Manufacturer Part #: DK-TTI-158W
• Length: 8 in
• Width: 5 in
• Height: 1 in
• Weight: 0.31 lbs

Fitment

Fits V-twin motorcycles with 2-inch diameter or larger slip-on mufflers.

Frequently Asked Questions

Do I need to remove my muffler to install these?

No. The insert bolts into the existing baffle bolt hole at the muffler end — a true bolt-on modification with E-Z installation.

Will this work on any slip-on muffler?

The insert fits slip-on mufflers with 2-inch diameter or larger and a standard baffle bolt hole. Check your muffler diameter before ordering.

Does it really increase torque?

Thunder Torque Inserts increase exhaust gas velocity and inertial scavenging to add low and mid-range torque. Actual gains depend on your bike's engine size and tune.

Can I adjust the sound?

Yes — the insert design allows you to tune both sound volume and tone by adjusting how the baffle bolt is installed.