K&N Replacement Air Filter DUC ST2 / ST3 / ST4 (97-'07)

K&N's high-flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom-engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing excellent engine protection for your motorcycle.

Features:

• Designed to provide increased horsepower and torque.
• Pleated media provides a large filtration area offering long service intervals.
• Multiple layers of woven cotton gauze media offer excellent filtration.
• Application-specific base seal and sealing bead.
• Made in the USA for over 40 years.
• Washable and reusable, pre-oiled and ready to ride!

Specifications:

• Filter Material: Cotton Gauze
• Washable: Yes
• Height: 1.188in (30mm)
• Outside Length: 8.25in (210mm)
• Outside Width: 8.25in (210mm)
• Filter Re-Oiling Amount: 1.17oz (35ml)