ZETA Throttle Tube ze45-8001 F5133 ZETA ZETA throttle tube F5133. See if it fits your bike. Kawasaki KLX 230 R Kawasaki KLX 450 R Kawasaki KX 250 Kawasaki KX 250 X Kawasaki KX 450 Kawasaki KX 450 X Suzuki RMX 450 Suzuki RMZ 250 Yamaha 225 Serow Yamaha WR 155 R Yamaha WR 250 F Yamaha WR 250 R