DK Custom Products Thunder Torque Inserts for 1" Diameter & Larger Slip-Ons - Single
About DK Custom Products
DK Custom Products parts and accessories are stocked at Vtwinbikers for Harley-Davidson and Indian Motorcycle applications. Every DK Custom Products item we list is new and sourced through authorized distribution. If you are not certain a part matches your year and model, use Shop by Bike or email our team before you order and we will confirm fitment first.
DK Custom Products Thunder Torque Inserts are patented tuning devices engineered to optimize exhaust gas velocity and scavenging. These inserts bolt directly into the end of your slip-on mufflers, targeting increased low- and mid-range torque gains for your V-twin.
Why riders pick this
- Patented technology for low-end torque
- Increases exhaust gas velocity and scavenging
- Adjustable sound volume and tone
- Stainless steel 5/16" studs with high-temp powder coat
- Direct bolt-in installation with all hardware
Experience a noticeable improvement in your V-twin's throttle response and pulling power with the DK Custom Products Thunder Torque Inserts. Designed for slip-on mufflers with a 1-inch diameter or larger exit, these innovative devices manipulate exhaust flow to create a more efficient scavenging effect. The result is a richer, more powerful feel throughout the low and mid-range RPMs, making your ride more responsive and enjoyable.
Precision Tuned Performance
- Patented technology for effective torque enhancement
- Increases low and mid-range torque output
- Adjustable sound volume and tone to personalize your exhaust note
- Constructed from stainless steel with high-temp powder coat finish
- Bolts directly into existing baffle bolt holes for easy installation
Easy Installation, Significant Impact
Installation of the Thunder Torque Inserts is straightforward, requiring no modifications to your existing slip-on mufflers. They are designed to integrate seamlessly using the existing baffle bolt hole, making this a true bolt-on performance upgrade. Beyond the torque gains, these inserts also offer the flexibility to fine-tune your exhaust's sound profile, allowing you to dial in the perfect rumble for your V-twin machine.
Specifications
- Brand: DK Custom Products
- Manufacturer Part #: DK-TTI-118S
- Length: 8 in
- Width: 5 in
- Height: 1 in
- Weight: 0.125 lbs
- Material: Stainless steel studs with high-temp powder coat
Common questions
What size mufflers will this insert fit?
This insert is designed for slip-on mufflers with a 1-inch diameter or larger exit tube. It bolts directly into the existing baffle bolt hole.
Will I need to re-tune my bike after installing these?
While these inserts can alter exhaust flow, a full re-tune may not be strictly necessary for all setups. However, for optimal performance, especially when combined with other modifications, a dyno tune is always recommended.
How does this affect the sound of my exhaust?
The Thunder Torque Inserts allow for adjustable sound volume and tone, letting you customize your exhaust note to your preference. They generally enhance the depth and rumble.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | DK Custom Products |
| TYPE | Hardware/Fasteners/Fittings |
| SKU | 880-3043 |
| WEIGHT | 0.13 lb |
