Indian Motorcycle Thunderstroke Stage 1 Forward Air Intake

Unleash the full potential of your Indian Motorcycle with factory-backed performance accessories. The key to making more power is increasing the amount of air and fuel flowing into the engine’s combustion chambers. Replacing your standard air intake with the Thunderstroke Stage 1 Forward Air Intake instantly boosts power and enhances acceleration. Plus, you’ll enjoy a deeper intake sound that perfectly complements the rich, throaty exhaust note of a Stage 1 Slip-On Exhaust Kit (sold separately).

In addition to increasing clean airflow into the engine, this high-flow air intake filter is optimized to help protect your engine from harmful dirt and debris. The Thunderstroke Stage 1 Forward Air Intake adds a sleek, distinctive edge to your bike—blending classic style with modern performance and putting a smile on your face every time you hit the throttle. 

This complete air intake system kit includes a calibration card with a unique code to update your Engine Control Module (ECM) software from its standard setup. This software upgrade is required to ensure peak performance and must be installed by an authorized dealer.  

** This item is only available for installation at your dealer. **

• Power & Smoother Throttle Response: The Indian Motorcycle Thunderstroke Stage 1 Forward Air Intake boosts airflow into the combustion chambers, increasing engine power and delivering smoother throttle response.
• Sharper Acceleration & Intake Performance: This performance air intake kit features a filter and housing designed to upgrade the standard intake setup—resulting in snappier acceleration and improved airflow efficiency. 
• Custom Look, Factory-Engineered Fit & Deeper Sound: The forward-facing design adds high-performance style, a deeper intake sound, and a custom look with a factory-engineered fit that complements your bike’s original lines. 
• Stage 1 Pairing for Maximum Impact: Complements a Stage 1 Slip-On Exhaust Kit (sold separately). Installing both accessories maximizes your Stage 1 power, sound, and style upgrade. 
• What’s Included: OEM air intake assembly, red water-resistant filter, protective rain sock, throttle body cover (111 or 116 badging), calibration card with a unique ECM update code, installation hardware, and installation instructions. 
• 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.