When given the chance to road test and install a set of Hard Krome T-Rex True Duals on our Harley Davidson Roak King, we jumped at the chance. Not much is more dull than a putt putt stock exhaust system and we were itching to upgrade our Harley pipes, so we went for it.
If you aren't familiar with the Hard Krome T-Rex pipe then you should know that Hard Krome markets this Harley pipe as the largest "true dual" exhaust system in the business. The Hard Krome T-Rex sports a man sized 3" diameter outer exhaust pipe that creates a sexy fat pipe look from the front header to the rear fender. We are typically fans of the 2 into 1 style pipes, because we're power crazy, but we have to admit that the balanced and sexy look that the Hard Krome True Duals brings to this bad ass bagger. True Duals might not be the most powerful Harley exhaust pipe on the market but it might be the sexiest. The Road King design almost begs for a classic dual exhaust so we gave in.
Hard Krome Harley Pipe Construction
The Hard Krome T-Rex isn't just a pretty face. Sure they're sexy but these pipes are also a very high quality example of a Harley Davidson exhaust pipe. They won't EVER turn blue due to the patented double wassl construction design. The inner exhaust pipe utilizes a progressive stepped header setup that begins with a 1.75-inch diameter pipe that steps up to a 1.875-inch diameter and then again up to a 2-inch diameter and then finally terminates into a 2.25-inch diameter removable baffle. All of this technology is surrounded by a beautifully chromed 3-inch outer pipe wall capped off by a chromed 3" billet aluminum end cap. You will also be happy to know that 2007 and up models have dual O2 sensor ports.
Hard Krome Installation
Many people are intimidated by the thought of installing their own Harley exhaust pipes but I have to tell you, it's not rocket science. In most cases you are simply unbolting a hunk of metal from your motorcycle and bolting another hunk of metal on in it's place. It might seem more complicated but it really isn't. The installation of the Hard Krome T-Rex Harley pipes was very straight forward even though the instructions that came with the bike were awful.
Installation of the T-Rex set was straightforward, complicated only by the lack of instructions. Without those, we stumbled a couple times, but if you read our story then you can benefit from our experience. The hardest part was removing the multi-jointed stock exhausts. Plus, with the T-Rex built-in heat shields, the pipes were heavy and bulky to handle.
The Harley Davidson that these Hard Krome T-Rex pipes were installed on, already had a Daytona Twin Tec TCFI III kit installed so fuel management wasn't going to be an issue on this install. If you do not have a fuel management system then you need to factor that into your install time. In most cases, it's a few hours at most to install.
Once installed, the Harley Davidson Road King fired right up and ran nicely. We cycled it through a few warm up periods so we could heat cycle all the fasteners. We took the time to reset and snug every fastener on the exhaust prior to the road test and away we went.
If you aren't familiar with the Daytona Twin Tec, it will auto tune itself to the hardware that is on the motorcycle. We completed a 50 mile ride with the new pipes installed and then updated the fuel trims. The bike was not perfect at this point but was running pretty damn good and sounded, simply awesome. The tune will only get better as we put more miles on this configuration and fine tune the fuel trims to match the new exhaust.
So far, we really like this pipe.
Hard Krome T-Rex Conclusion
The dyno numbers are not impressive for this setup but we should say that we didn't expect them to be. True Duals are not the best setup when it comes to producing large horsepower gains but like we said above, these pipes are sexy enough that we didn't care.
This selection is based PURELY on exhaust sound and appearance. Yes we're vain, we like pipes that look good too. Shoot us.
The Hard Krome T-Rex logged about a 2 hp increase in power and a 3 ft/lbs increase in torque. Nothing to write home about, but did I mention they are sexy?
Uber Sexy Even.
The Hard Krome T-Rex can be hard to find so grab a set while you can.
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