Houser Racing long travel A-arms Needle roller Bearing for Honda TRX400EX and TRX 450R Long Travel A-Arm (16 required, sold individually) - Yam YFZ 450 LT A-Arm (12 required, sold individually). These quality bearings ensure your A-arms have full and smooth movement throughout the range keeping full traction on the ground, resulting in you coming out the corners quicker than your competitors! These bearing have replaced the nylon bushes that are no longer available.