ProX Piston Kit Yamaha YZ450F 20 22 WR450F 21 23 13.0:1 (96.96mm) 3DF Airfit No more worrying about part Tyre size:80 100 21 No more worrying about part of the tool falling off and damaging the fork leg or hitting your feet KTM 65 SX 99 18 FXFR 50100 99OR 125 EXC 99 16 FXFR 50100 99OR 125 SX 99 15 FXFR 50100 99OR 144 150 SX 08 15 FXFR 50100 99OR 200 SX EXC 98 16 FXFR 50100 99OR 250 SX EXC 98 16 FXFR 50100 99OR 250 SX F EXC F 06 15 FXFR 50100 99OR 300 SX EXC 98 16 FXFR 50100 99OR 350 SX F EXC F 11 15 FXFR 50100 99OR 380 SX EXC 98 02 FXFR 50100 99OR 400 SX F EXC F 98 12 FXFR 50100 99OR 450 SX F EXC F 03 15 FXFR 50100 99OR 500 EXC F 03 16 FXFR 50100 99OR 505 SX F 08 12 FXFR 50100 99OR 525 SX F EXC F 03 06 FXFR 50100 99OR BETA RR Year 125RR 2T 18 19 FXFR 50101 99HA 250RR 2T 13 19 FXFR 50101 99HA 300RR 2T 13 19 FXFR 50101 99HA 350RR 4T 10 19 FXFR 50101 99HA 390RR 4T 15 19 FXFR 50101 99HA 400RR 4T 10 14 FXFR 50101 99HA 430RR 4T 15 19 FXFR 50101 99HA 450RR 4T 10 14 FXFR 50101 99HA 480RR 4T 15 16 FXFR 50101 99HA 498RR 4T 12 14 FXFR 50101 99HA 500RR 4T 17 19 FXFR 50101 99HA 520RR 4T 10 11 FXFR 50101 99HA ProX pistons are precision machined on the latest D+ oversizes