PERFORMANCE SPARK PLUG Victory Vegas Jackpot Arlen Ness Signature Series 1634cc (2006) * GFRT44AR12ZSYU133 1. Higher HP and torque by up to 3 % 2. increased economy by up to 5% 3. 360 Firing Technology 4. Improved acceleration by up to 15 % 5. 25,000 miles - 40,000 km duration