The OS-Base is an 'over the seat harness' for mounting OS-6

Twill fabric

2 x Lashing straps

Curved bill structured crown

Motorex - Air Filter for KTM past type tag-Tank Bags The OS-Base is an 'overMotorex Oil of Switzerland now offers a wide range of air filters to combine maximum filtration performance with maximum engine output! Every Motorex air filter consists of 2 layers of foam with different porosity, flame laminated to weld into shape. The outer layer acts as a pre filter to keep out mud and coarse dirt. Whereas the fine pored inner cell traps even the smallest of dirt particles. Features Precisely designed to meet high performance