DK Custom Products

Phone: 662.252.8828
Text: 662.420.4891
Email: [email protected]

Long Thread Thunder Torque Inserts 118 For Increased HP & Torque

Availability: In stock
Item #: DK-LT-TTI-118
Manufacturer: DK Custom Products

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 DK Custom Thunder Torque Inserts Increase Torque & give Flexibility in sound volume increasing inertial scavenging reducing engine pumping losses, increasing exhaust gas velocity Harley Davidson


Increases Low & Mid Range Torque

Adjustable Sound Volume & Tone

For Your Exhaust

 MADE in The USA!


DK Custom Products


  • High-Temp Powder Coat Finish
  • Stainless Steel Studs (5/16" diameter)
  • Includes All Hardware
  • FITS 1.5" diameter & larger Slip-ons (other sizes available)
  • Increases Low & Mid Range Torque
  • Increased Exhaust Gas Velocity
  • Increased Inertial Scavenging
  • Adjustable Sound Volume & Tone
  • Option for only 1 TTI for 2-1 exhaust systems
  • E-Z Installation  Bolts into the end of the slip-on muffler (using the baffle bolt hole)
  • Patented Technology
  • Made in The USA!


The LT (Long Thread) Thunder Torque Inserts™ are appropriate for about 3% of the Harley exhausts out there.  Click this LINK to see a full Description of the Thunder Torque Inserts™ that are applicable to most exhausts.

 The LT TTI's are only for use as outlined in the video below.  Please watch and determine which you need for your application.

If, AFTER watching the video, you are still not sure if you need the Standard TTI's or the LT TTI's, please email or call us and we will help out.

[email protected]







Dyno Charts of 8 Different Bikes Running Thunder Torque Inserts™ HERE


More Dyno Charts w/ TTI HERE

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