RFX Race Voortandwiel 13 tands Amount of teeth:13 teeth RFX Pro Series Throttle Tubes RFX Pro Series Throttle Tubes are machined from billet aluminum and feature a sealed bearing and Teflon sleeve to provide an effortless throttle action csC5E62B0B{color:#F00 RFX sprockets also feature lightening holes on selected models but only when durability will not be affected Case Hardened and core refined Alloy steel that gives you the best strength and durability