K&N Replacement Air Filter Monster S2R / S4R
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This K&N racing air filter has just two layers of cotton to provide even lower air restriction than our replacement air filter for street vehicles. Unlike K&N replacement air filters, fuel management modifications will be necessary with this racing filter. K&N racing air filters are washable and reusable.
Features:
- Designed to increase horsepower and acceleration.
- Designed for racing and track applications, not for street use.
- Washable and reusable air filter.
- Low restriction.
Specifications:
- Filte Material: Cotton Gauze
- Washable: Yes
- Height: 24mm
- Outside Length: 279mm
- Outside Width: 217mm
- Filter Re-Oiling Amount: 33ml