If you're having spark issues with your YN 100 then it's a no brainer to get a new coil on the bike
Brand new set of headstock / steering bearing to fit:
BMW HP2 Megamoto (2006-2008)
Worlwide delivery available
This steering bearing set has been desinged to replace the factory headstock bearings on a Yamaha XJ700 for the years 1985 & 1986
ignition coil 1 and 2 yamaha yzf1000 yzf 1000 r 1996 2001 Suzuki AN125 If you're having spark issues2 Brand New 12V CDI ignition coils to fit: Yamaha YZF 1000 R Thunder Ace (1996 2001). This ignition coil pair has been specifically manufactured to replace the factory ignition coils on a Yamaha YZF 1000 R Thunder Ace for the years 1996, 1997, 1998, 1999, 2000 & 2001. The models are 4SV1, 4SV3, 4SV4, 4SV5, 4SV6. It replaces the following OEM: 4FM 82310 00 4FM 82320 00 4FM 82310 01 4FM 82320 01. 90mm from centre to centre and 2 spade connectors. FREE