Never before has the H-D owner had the opportunity to build his engine this big so easily. We bought and modified our 2009 FLHX in the fall of '09 and it's been an absolute BLAST. This top-end-only job can be performed over a weekend and the results are gratifying, to say the least. Like all cases involving performance, there are other "constraints" in the package; such as exhaust and intake air filter flow that should be addressed. We have found that these are some of the first things modified by an H-D owner so we will not address them here. If you are in doubt about what you already have, we will be glad to help with advice.
STAGE 1: If you choose stage 1 and increase the cubic inches without any other changes you will see an increase in low speed torque and minimal gains in horsepower. That is not all bad, since most of your actual cruising is done here. Your cylinders are bored then torque plate finished on a Sunnen SV10 diamond hone.
STAGE 2: This package is designed to include the needed parts to bring your bike performance to a really enjoyable level without backing yourself into a corner for future gains. Axtell reconditions your heads using a Black Diamond Valve with a larger 1.900 intake and a hi-tulip exhaust for added flow. Hi-lift springs are set up for the cam lift and the head is ready to go!
The TTS engine controller included has been proven to be an excellent product with a great support base(we use this on our bikes. We provide complete tuning support when you buy this kit...
The pushrods we inlude are super stiff and are not the long, adjuster-type that "install easily". Those types have a little too much flex for our taste and considering you are into the engine anyway, why not use the best?!?
Set up at .035 squish, this kit gives 10.25 to 1 and 185 cranking compression. Great power from 2000-5000 rpms.
STAGE 3: Same as Stage 2, but with increased power across the board by employing Baisley's airflow magic. We have worked with Baisley High-Performance for over 30 years. From the street to the drag strip, and even Bonneville, they can't be beat! Their work is impeccable and if you're the type to check valve seat concentricity, (and we are!!), it's easy to tell the difference between a $400.00 job and theirs. Larger valves are used on both sides 1.900 (+.095) and 1.630 (+.050). High lift springs, new guides, and seals round out the port job.
An added benefit to these heads is a larger intake port I.D. to match up to the SE 58mm throttle body or any of the aftermarkets. If you are already a 50mm, like the late touring models, you can easily open it up to match the heads...CHEAP HP!!!!
The compression ratio stays at 10.25 and 185 cranking. This combo will produce 100-115 HP and 110-125 TQ with VERY GOOD street manners!!
***These parts are for OFF ROAD USE ONLY***
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