This is Arm Mount B for the Associated RC8B4

a 3-position switch on the grip

5S lithium-polymer battery

aluminum alloy will not flex as much as plastic under stress or during high ambient temperatures

2017 version

MB Slot BBR Ferrari F430 1/32 Slot Car Kit SL001 for Slot.it Scalextric Carrera Lazer ZX Parts This is Arm Mount BMB Slot BBR Ferrari F430 Challenge Kit 1 32 Scale Slot Car Specs: inline motor , long cage , screwed onto its support brass pinion , 9 teeth 26 teeth crown , screwed aluminum hub rear pin on brass bearings front axis on brass bearings , adjustable in height axes: diameter 2. 38 mm, length 54 mm 2 plastic rear rims 18 15. 7 mm x 10. 8 mm 2 plastic front rims 18 15. 7 mm x 8. 5 mm 2 rear tires 21. 3 mm x 11 mm 2 front tires 20 mm x 8. 5 mm 2 cylindrical