K&N Engineering HA-1121 High-Flow Replacement Air Filter for Honda Rebel 1100

The K&N High-Flow Air Filter for Motorcycles is engineered to increase airflow for improved horsepower, throttle response, and acceleration while providing increased engine protection. Built with premium oiled cotton gauze, this washable and reusable air filter is designed for long-lasting performance, a precision OEM-style fit, and durable construction to keep your motorcycle performing ride after ride. The K&N High-Flow Air Filter for Motorcycles is engineered to increase airflow for improved horsepower, throttle response, and acceleration while providing increased engine protection. Associated products: 99-5000 Filter Care Service Kit Aerosol

• PRECISION OEM-STYLE FIT: Made with application specific seamless sealing beads and custom seals for easy installation (Where Applicable).
• Designed to provide increased horsepower and acceleration specifically developed for Off-Road, Motocross, ATVs, UTVs and Side by Sides
• Pleated cotton media provides a large filtration area offering low restriction, high-capacity and long service intervals
• Fits directly into OEM air box with application specific sealing bead ensuring a precise fit
• No fuel management modifications are required to obtain increased performance
• Multiple layers of woven cotton gauze media offers excellent filtration
• Washable & reusable, most are pre-oiled and ready to ride
• One Year Limited Warranty

The K&N Engineering HA-1121 High-Flow Air Filter is a washable and reusable replacement filter designed for select Honda CMX1100 Rebel 1100 motorcycles. Its premium oiled cotton gauze media helps increase airflow for improved throttle response, acceleration, and horsepower while supporting effective engine protection. The filter installs directly into the factory air box for a precision OEM-style fit without requiring fuel-management modifications.

Designed for long-term powersports use, the K&N Engineering HA-1121 features pleated filtration media that provides a large filtration area, low airflow restriction, and high dirt-holding capacity. Multiple layers of woven cotton gauze help deliver reliable filtration, while application-specific sealing beads and custom seals support a secure fit where applicable. The filter is washable, reusable, typically pre-oiled, and ready to ride, helping reduce the need for frequent replacement filters. A K&N 99-5000 Filter Care Service Kit Aerosol is available separately for cleaning and maintenance.

Fitment includes 2021–2024 Honda CMX1100 Rebel 1100 models, including DCT versions, plus the 2023–2024 Honda CMX1100 Rebel 1100T DCT. The K&N HA-1121 is backed by a one-year limited warranty. This product may require applicable California emissions acknowledgment before installation or use.

Key Product Specifications & Technical Data

• Brand: K&N Engineering
• Part Number: HA-1121
• Product Type: High-flow replacement motorcycle air filter
• Filter Media: Premium oiled cotton gauze
• Serviceable Design: Washable and reusable
• Installation: Direct fit into the OEM air box
• Application: Powersports, motorcycles, off-road vehicles, ATVs, UTVs, and side-by-sides
• Warranty: One-year limited warranty

What's Included

• One K&N Engineering HA-1121 High-Flow Replacement Air Filter

Features:

• Precision OEM-style fit: Application-specific sealing beads and custom seals support easy installation and a secure fit where applicable.
• Improved airflow and performance: Designed to help increase horsepower, throttle response, and acceleration on compatible Honda Rebel 1100 motorcycles.
• High-capacity filtration media: Pleated cotton gauze provides a large filtration area with low restriction and extended service intervals.
• Washable and reusable construction: Durable oiled cotton gauze media can be cleaned and serviced for long-lasting use.

Fitments:
2021 Honda CMX1100 Rebel 1100 Base
2021 Honda CMX1100 Rebel 1100 DCT Base
2022 Honda CMX1100 Rebel 1100 Base
2022 Honda CMX1100 Rebel 1100 DCT Base
2023 Honda CMX1100 Rebel 1100 Base
2023 Honda CMX1100 Rebel 1100 DCT Base
2023 Honda CMX1100 Rebel 1100T DCT Base
2024 Honda CMX1100 Rebel 1100 Base
2024 Honda CMX1100 Rebel 1100 DCT Base
2024 Honda CMX1100 Rebel 1100T Base
2024 Honda CMX1100 Rebel 1100T DCT Base
2025 Honda CMX1100 Rebel 1100 Base
2025 Honda CMX1100 Rebel 1100 DCT Base
2025 Honda CMX1100 Rebel 1100T Base
2025 Honda CMX1100 Rebel 1100T DCT Base
2026 Honda CMX1100 Rebel 1100 Base

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: powersports
Epa: N/A
Regular Stock: t
Units Per Sku: 1