K&N High-Flow Engine Air Filter for Royal Enfield Himalayan 411 – Unmatched Performance & Longevity

Designed for riders who demand improved engine performance, extended service life, and superior filtration, the K&N High-Flow Air Filter for Royal Enfield Himalayan 411 offers exceptional power gains, reusability, and long-term value.

Powerful Performance & Engine Protection

• Increased Horsepower & Acceleration – Allows significantly higher airflow to boost performance.

• Proven Filtration Technology – Features four to six layers of cotton gauze sandwiched between aluminum mesh for exceptional dust and debris protection.

• Pre-Oiled & Ready to Install – Pre-treated and ready to drop into your OEM air box without modifications.

Washable, Reusable & Built to Last

• Lifetime Durability – Engineered to last for the life of your motorcycle.

• Wash & Reuse – Clean every 50,000 miles under normal conditions, reducing waste and maintenance costs.

• Low Maintenance – No frequent replacements required like stock filters.

Optimized Fit & Legal Compliance

• Direct Fitment – Designed to fit perfectly in the Royal Enfield Himalayan 411’s stock air box.

• Emission Legal in All 50 States – Compliant with road regulations across India and the U.S.

• Vehicle Warranty Safe – Won’t void your manufacturer’s warranty.

Technical Specifications

• Product Style: Round Straight Air Filter

• Material: Oiled Cotton Gauze

• Washable: Yes

• Outside Diameter: 3.813 in (97 mm)

• Inside Diameter: 2.125 in (54 mm)

• Flange Length: 0.438 in (11 mm)

• Filter Height: 5.625 in (143 mm)

• Weight: 0.6 lb (0.3 kg)

• Re-oiling Amount: 1 oz (30 ml)

• Warranty: 10-Year / 1,000,000 Miles

Cross Reference:

• BMC: FM96608

• DNA: RRW4N1901

• Royal Enfield: 587343A

Product Highlights

• 10-Year/Million Mile Limited Warranty

• Designed for optimal airflow and filtration

• Washable, reusable, and environmentally friendly

• Easy drop-in installation

• Durable and track-tested