This is a pair of 23x109mm 5

Battery Compatibility: 2S LiPo

designed to stay attached to the wheel hex so they're less likely to get lost during wheel changes

Losi Racing LOS254038 Front Spindle Set (Left and Right) 1/6 Super Baja Rey

NCE 524-027 SB5 5 amp Smart Booster with International Power Supply Associated Parts This is a pair ofNCE 524 027 SB5 5 amp Smart Booster with International Power Supply. Add an SB5 Smart Booster (command station power booster) to your Power Cab when you need more locomotive capacity (track power). The SB5 can supply 5 Amps of track power while freeing up your Power Cab for true walk around control. The SB5 accommodates up to 6 throttles plus an additional 3 cab bus accessories such as AIU, USB or Mini panels. An internationally approved 12 13. 8 volt