I recently bought 2 new Yamaha OEM "clutch repair kits" which are pretty much complete primary clutches for 16+ Viper, Venture, Vector, etc... but disassembled. I also run a 12 Vector primary on my 17 LTX SE, a 16 Viper primary on our 1st 25 LTX LE, and will be putting one of the "repair kit"...