Arrcat Rc Upgrades Part For 1/7 Arrma Limitless Infraction Felony (Ara109011/Ara109001/Ara7615V2/Ara7617V2) Rc Car,Center Drives? ? Original Part #ARA311027?: The upgrades fits for 1 7 Arrma Infraction Limitless Felony RC Car as below: ARA109011 ARA109001 ARA7617V2 ARA7615V2. ??? Good Performance?: The Center Driveshaft High Speed Support Set reduces the dog bone rotating vibration,improve the transmission efficiency. ??? High Quality?: The rc upgrades part made of high quality Aluminum Alloy material,durable and wear resistant,improves the overall performance of the support