Indian Motorcycle Thunderstroke Stage 1 High Flow Air Intake

Designed to elevate both power and rider comfort, the Thunderstroke Stage 1 High Flow Air Intake increases airflow into the combustion chambers—helping your engine breathe easier for stronger acceleration and a smoother, more responsive throttle feel. This high flow intake system features a sculpted open-element housing paired with a washable, high-flow filter that enhances intake efficiency while protecting the engine through long-term, reusable filtration. 

Engineered with a 1-inch narrower footprint than the stock intake, this system provides added legroom on the left side while maintaining a clean, factory-level fit. For riders seeking maximum gains in power, throttle response, and a deeper, more resonant exhaust note, it pairs seamlessly with a Stage 1 Slip-On Exhaust Kit (sold separately). Finished in your choice of Chrome or Black, the bold housing features the iconic Indian Motorcycle script logo—delivering a performance-forward look that complements your bike’s design. 

This complete kit includes the full air intake assembly, reusable filter, calibration card with a unique ECM update code, installation hardware, and instructions. Each kit is marked with a warning triangle to indicate any applicable regulatory restrictions. Dealer installation is required for ECM recalibration to ensure optimal performance.

• Increased Power & Smoother Throttle Response: The Thunderstroke Stage 1 High Flow Air Intake boosts airflow into the combustion chambers, helping your engine breathe more freely. The result: increased power and a smoother, more responsive throttle feel. 
• Enhanced Acceleration & Intake Efficiency: This high performance air intake kit features a refined housing and high-flow filter that improve airflow and intake performance for snappier acceleration and optimized ride dynamics. 
• Slimmer Profile for Added Legroom: With a 1-inch narrower footprint than the standard intake, this high flow air filter intake provides added left-side legroom and a clean, factory-level fit. 
• Removable, Washable Filter Element: The reusable filter element is easy to remove, clean, and reinstall—supporting long-term engine health and consistent performance with simple maintenance. 
• Bold Styling with Embossed Script Logo: Finished in Chrome or Black, the sculpted housing features the iconic Indian Motorcycle script logo—delivering a bold, performance-forward look that complements your bike’s design.
• What’s Included: Includes the full air intake assembly, reusable filter, calibration card with a unique ECM update code, installation hardware, and instructions. Dealer installation is required for ECM recalibration to ensure optimal performance. 

Other Specifications:

Recommended With: Stage 1 Slip-On Exhaust and/or Stage 2 Performance Cams

 Designed to fit:

Orders $89 and over qualify for free standard shipping via Ground (UPS, FedEx, USPS) to the contiguous 48 US states. Shipping will be calculated for orders to Alaska, Hawaii, and U.S. Territories including Puerto Rico, Guam, and U.S. Virgin Islands.

Orders under $89 qualify for $4.99 standard shipping via Ground (UPS, FedEx, USPS) to the contiguous 48 US states. Shipping will be calculated for orders to Alaska, Hawaii, and U.S. Territories including Puerto Rico, Guam, and U.S. Virgin Islands.

P.O. Box Shipping. If you list a PO Box and select free shipping, please add a customer note with your order including a physical shipping address. We will ship to a PO Box if the shipping is comparable to other carriers. Otherwise we may need to ship to physical address or charge additional shipping fees.

Learn about additional details and restrictions by reading our full Shipping Policy

If your order arrives and it is not right, we’ll fix it…period. Doesn't fit or you're simply not happy with your item? Return any new, unused and unaltered item within 30 days of delivery of your item. Learn about additional details and restrictions by reading our full return policy.