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This is the Battery Extension Unit for ARP 9, ARP 556, Raider L 2.0E
Helps keep your mosfet and wires from getting pinched or damaged
The extra space allows for a larger battery to be used.
Two eye holes on either side helps to keep the stock straight and stable
Fast installation with ease
60% more battery space
Air slits help to passively cool your battery and compartment
Compatible with all ARP 9 Series