Thunder Mfg grabbed the challenge and developed this kit to awaken the big Vulcan from its slumber. During our extensive testing we used 3 grinds of cams and 3 different compression ratio piston sets. The result is the best all around performance and ride-ability.
The THUNDERSTORM is designed to the highest engineering standards available with emphasis on quality and reliability.
Designed for those who need MORE POWER!
Ron on 03/18/2013 05:11pm
got the bike back from the dyno tunind WOW what a differance
Ron on 02/28/2013 08:38pm
just picked up the High Performance Kit for my Kaw 1600 classic its being installed right now cant wait to try it out. will let you know how it performs.
Don on 04/03/2011 07:55pm
Got the bike back and on the road...had issues with the shop I used to do the work( Not Thunder Man.) . Dyno results for the streak with V
John, Sierra Vista, AZ on 08/09/2010 11:31pm
This was THE BEST mod for this bike to date...worth the investment, and NOT for the faint of heart. Travis and Dave were ALL-STARS getting it tuned just RIGHT! Customer for life! 100CI FTW!!
Troll on 06/18/2009 10:56pm
Kit installed on 05 meanstreak still breaking it in ,but so far VERY RESPONSIVE. Havent cracked and held the throttle hard open but am sure there is a lot more there A-PLUS on this kit so far.
Ron King-San Diego/Winchester Tn on 01/13/2009 08:11pm
I installed the kit on my 1998 1500 Classic on April 2002 along with a Forcewinder intake. Absolutely no problems in seven years. Runs strong! Installed when dealer was replacing the plastic oil gear. Had a machinist do the bore job and piston matching. Dealer did not have bore maching capability. Couldn't be happier with the upgrade.
Mark on 07/08/2007 11:49pm
Amazing increase in power and torque! Trent and his crew were great to work with and did a wonderful job. I would reccommend this kit to anyone.
Gary Albuquerque on 03/18/2006 04:55am
Installed the 410 kit, ported heads with big intake valves, Thunder Intake, Thunder Charged breather, Thunder Slide and baffeled 1-3/4" to 2-1/4" step header pipes. Fired the bike up today 3/17/06 and the it is awsome, unbeleavable perfor
JV on 12/05/2005 03:14pm
installed 410 kit with ported heads THUNDER intake and hardchrome exhaust. one word, UNBELEIVABLE.