A: No — they work perfectly with pump gas or race fuel depending on your tuning needs
such as Hot Rods Crankshafts
2006+ YFM 700R RAPTOR
Upgrade Your Ride with the BPRATV Talon Titanium 2-Stroke Cylinder Head Nut Kit
Nitrite-coated piston rings | 3386XC
05-13 Yamaha YZ250F YZ 250F +3 Cylinder JE Piston Wiseco Crank Motor Rebuild Kit General 1000 A: No — they work21002 K01,C3059,247940,221797,M1050C,MX1050C,P400485100026,P400485160007,S5F08300006A,S5F08300006C,S5F08300006,20002,WPC140, PK1401, 4882M07700, W5921, C7905 EST, 20002,247937,94591 53114 00,P400485100026,P400485160007,5NL 11181 00 00, 5NL 11351 00 00, 5NL 14613 00 00,20002,HC92RH2010114,CC007,31. 2402, 4FM 12213 00, 4SV 12119 00 00, 4TV 12119 00 00, 20002, 221798, MX 09150 2, 5XC 11311 20 00, 5NL 11311 00 00, 5NL 11631 20 00, 5UL 11311 00 00, 5XC