Command attention with the Thunderstroke Stage 1 Slip-On Exhaust Kit—built to amplify your ride’s power, sound, and style. This high performance exhaust system reduces backpressure and improves airflow from header pipe to tip, helping your engine breathe more freely and unlocking increased horsepower, stronger mid-range torque, and sharper throttle response. It delivers a rich, deep rumble at low RPMs and a bold, full-throated sound at higher revs—enhancing your bike’s auditory presence with every twist of the throttle. 

Finished in matte black, these slip-ons bring a clean, commanding edge to your ride. For added customization, choose from a variety of exhaust tip styles (required, sold separately) to match your preferred factory-custom look. When paired with a Stage 1 Air Intake (sold separately), this performance exhaust deepens tone and creates a more immersive riding experience. 

The kit includes a pair of heavy-duty OEM matte black pipes, installation hardware, step-by-step instructions, and a recalibration card with a unique ECM update code—available exclusively through your dealer. Each kit is designated with a warning triangle to indicate applicable restrictions. 

Signature Sound Upgrade: The Indian Motorcycle Thunderstroke Stage 1 Slip On Exhaust Kit delivers a rich, deep rumble at low RPMs and a bold, full-throated sound at higher revs—amplifying your ride’s auditory presence with every twist of the throttle.

Performance Gains Across the Powerband: This high-performance dual exhaust system reduces backpressure and improves airflow, helping your engine breathe more freely—unlocking increased horsepower, stronger mid-range torque, and sharper throttle response.

Blacked-Out Style with Interchangeable Tips: Finished in matte black, these slip-ons add a clean, commanding look to your ride. Choose from a variety of exhaust tip styles (required, sold separately) to personalize your factory-custom aesthetic.

Stage 1 Synergy: Designed to work in tandem with a Stage 1 Air Intake (sold separately), this exhaust maximizes airflow, deepens tone, and delivers a more immersive riding experience. 
Dealer-Exclusive Availability: Includes two (2) heavy-duty OEM matte black slip-on pipes, installation hardware, step-by-step instructions, and a recalibration card with a unique ECM update code—available exclusively through authorized dealers. 

Color-Black
Material-Steel
Ease Of Installation-Dealer Only
Required Sold Separately-Fish Tail, Six Shooter, Grooved, or Straight Exhaust Tips

What’s Included
Left Hand and Right Hand Exhaust Pipes, Stage 1 Calibration, and Installation Instructions

Designed to Fit
Indian Motorcycle
2021 Vintage Dark Horse
2020-2021 Indian Vintage
2020 Indian Chief Dark Horse
2018, 2016 Chief
2017-2019 Chief Dark Horse
2017-2018 Roadmaster Classic
2014-2019 Chief Vintage
2014-2018 Chief Classic