The Twin Air Air Filter, manufacturer part number 154113 and vendor part number 154113, is designed to provide dependable engine air filtration for select KTM off-road motorcycles and ATVs. Its dual-layer open-pore foam construction helps protect the engine from airborne dirt, grime, and sand while supporting strong airflow for responsive performance.
The coarse outer foam captures larger contaminants, while the fine inner foam provides a second filtration stage for smaller particles. A thick, flat, greaseless sealing ring promotes maximum contact with the airbox and functions as a breathable gasket. The filter is intentionally smaller than the stock filter to create additional space around the element and improve air circulation within the airbox.
Feature: Dual-layer open-pore foam traps large and fine airborne contaminants
Feature: Thick, flat, greaseless sealing ring supports a secure airbox fit
Feature: Adhesive is formulated to withstand repeated cleaning, including exposure to harsh solvents or gasoline
Feature: Smaller-than-stock design increases air space and circulation around the filter
Fitment includes the 2007-2009 KTM 250 SX, 2007-2009 KTM 250 SX-F, 2008-2009 KTM 250 XC, and 2008-2009 KTM 450 XC ATV. Verify the motorcycle or ATV model and year before installation to confirm compatibility. The Twin Air brand is recognized for purpose-built foam filtration products developed for demanding off-road applications.
Features:
- Dual-layer open-pore foam captures airborne dirt, grime, sand, and fine particles
- Thick, flat, greaseless sealing ring provides maximum contact with the airbox
- Adhesive withstands repeated cleaning with harsh solvents or gasoline
- Smaller-than-stock profile improves air space and circulation around the filter
- Fits select 2007-2009 KTM 250 SX, 250 SX-F, 250 XC, and 450 XC ATV models
Fitment:
2007 KTM 125 Exc
2007 KTM 125 SX
2007 KTM 144 Sx
2007 KTM 250 SX
2007 KTM 250 SX-F
2007 KTM 250 XC
2007 KTM 250 XC-F
2007 KTM 250 XC-W
2007 KTM 250 XCF-W
2007 KTM 450 EXC-F
2007 KTM 450 SX-F
2007 KTM 450 XC-F
2007 KTM 450 XCF-W
2008 KTM 125 Exc
2008 KTM 125 SX
2008 KTM 144 Sx
2008 KTM 200 Xc
2008 KTM 200 Xc-W
2008 KTM 250 SX
2008 KTM 250 SX-F
2008 KTM 250 XC
2008 KTM 250 XC-F
2008 KTM 250 XC-W
2008 KTM 250 XCF-W
2008 KTM 300 XC
2008 KTM 300 XC-W
2008 KTM 450 EXC-R 4-Stroke
2008 KTM 450 SMR 4-Stroke
2008 KTM 450 SX-F
2008 KTM 450 XC ATV
2008 KTM 450 XC-F
2008 KTM 450 XCF-W
2008 KTM 505 Sx-F
2008 KTM 505 Xc-F
2008 KTM 525 XC ATV
2009 KTM 125 Exc
2009 KTM 125 SX
2009 KTM 150 SX
2009 KTM 150 XC
2009 KTM 200 Xc
2009 KTM 200 Xc-W
2009 KTM 250 SX
2009 KTM 250 SX-F
2009 KTM 250 XC
2009 KTM 250 XC-F
2009 KTM 250 XC-W
2009 KTM 250 XCF-W
2009 KTM 300 XC
2009 KTM 300 XC-W
2009 KTM 450 EXC-R 4-Stroke
2009 KTM 450 SMR 4-Stroke
2009 KTM 450 SX ATV
2009 KTM 450 SX-F
2009 KTM 450 XC ATV
2009 KTM 450 XC-F
2009 KTM 450 XCF-W
2009 KTM 505 SX ATV
2009 KTM 505 Sx-F
2009 KTM 505 Xc-F
2009 KTM 525 XC ATV
2010 KTM 450 EXC-R 4-Stroke
2010 KTM 450 XCF-W