So, no spark can now be stator, CDI, coil, spark plug cable/boot or any wiring between the sub-systems.
1st order is to follow test sequences in service manual... then having extra parts to swap in becomes invaluable as one can only test using an oscilloscope and some electronics knowledge.
'01 660 Raptor, Burgard +2+1 arms, YFZ Shocks, LSR anti-vibe, CTR pipe, jetted, K&N
'01 Polaris Scrambler 400, K&N
'02 Honda 400ex, Big Gun pipe, jetted, K&N, Lonestar +2 A-arms, Lonestar anti-vibe
'04 Suzuki LTZ400
'16 RZR XP4 1000 Turbo