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· MODIFY TORUS AK47 Complete Upgraded Gear Box-Rear Wire (S130 +, 8mm) · Complete Gearbox high performance · Design interleaving eliminates torsional effects caused by any internal force · housing striated increases resistance, reduces weight and dissipates heat more efecientemente a · Openings allow conventional gearbox inspect and lubricate the internal parts easily without disassembling the gearbox · oversized heavy-duty screws and ensure a secure fit · rear Wiring