*HFF4021 Dual Layer Foam Air Filter Hiflofiltro S3-Cat-Tools-Bikespecifictools-HarleyDavidsontools Extra-long threaded section improves thermal

Extra-long threaded section improves thermal transfer to the cooling system

Features multiple sized slots to accommodate various common motorcycle rim configurations

it is designed to withstand the rigours of daily commuting and spirited weekend rides

Dual-wheel design provides enhanced stability and smoother operation when lifting

Contoured to match the frame's geometry for an OEM-style finish

*HFF4021 Dual Layer Foam Air Filter Hiflofiltro S3-Cat-Tools-Bikespecifictools-HarleyDavidsontools Extra-long threaded section improves thermalDesigned for off road environments, this dual layer foam filter provides maximum protection against sand, dust, and mud. The two stage filtration process ensures that even the smallest particles are captured before entering the intake. Coarse outer foam layer catches large debris and prevents premature clogging. Fine inner foam layer acts as a second barrier against microscopic particles. Bonded seam construction prevents the layers from separating