I'M HAPPY TO SAY THAT I'M THE PROUD OWNER OF THE HELL CAT42 WHICH BROUGHT BACK TO LIFE MY no.# 34 ROAD STAR SILVERADO (bought it brand new) IN 1999, WITH THE HELP OF MAX MY BIKE RUNS BETTER THAN I CAN EVER REMEMBER...GREAT PERSON TO WORK WITH. THANKS MAXAIR

I purchased the Maxair Hellcat 42 HSR kit for my 04 Road Star. After installing it, and getting the idle and air screw adjusted properly, the bike is running better than it ever has. The biggest improvement is the throttle response. It’s now silky smooth, unlike the old carb which was always pretty jerky at low throttle. It’s a huge improvement over the stock Mikuni 40. Having a mechanically operated slide vs. a vacuum operated slide is a huge improvement and really improves throttle response. Yamaha should have included the HSR 42 on every Road Star. It’s that much better. It’s the single best upgrade that my Road Star has had. I also went with the pumpless mod. Max walked me through setting it up properly. It works flawlessly. No more worries about my fuel pump failing. And it looks better too with the fuel pump cover gone and all of the engine showing. Maxs kit included everything needed for the upgrade. Detailed instructions, throttle cables, and he offered over the phone assistance during the install. Great customer service. My bike is configured with a set of Vance and Hines exhaust, A high flow air K&N style filter, and a ported intake manifold. There’s zero popping on deceleration (which can be an issue with high flow exhausts), and there’s no more puffing out of the carb when applying the throttle like I had on the original Mikuni 40. Anybody looking to improve the performance of their Road Star should consider the Hellcat HSR 42 as their first upgrade. You won’t regret it. Jeff S.

Firstly, the support before and after buying the carb is one of the best customer experiences. I Originally was going to go VOES route. After doing my research I found Max and got the carburetor with the TPS mod. Bike runs great now. Make sure you read the instructions before starting anything.!!! Best thing to do if you are not sure about something with the install, ask max and wait for the response. He is incredibly quick at getting back to you. Easy install, the hardest part of the install is the throttle cables. Easy enough to figure out. I’m thankful I stumbled upon Max’s website, the TPS is such an important component in having the bike run properly and keeping good gas mileage. I Added in the AIS delete kit. This was absolutely worth the small extra cost, please don’t use cheap plate steel from the hardware store. The plates are properly sized and you can use the factory gaskets and is an easy and clean install. Overall, incredible carb. It’s worth having someone with such experience and expertise with these carbs to help navigate the transition from the CV carb. I Have not found anyone else that understands how to fabricate the TPS to work with the Mikuni. -Mike

I purchased the Hellcat setup about a month ago now for my 2006 Road Star and am very happy with the results. Prior to shipment, Max is very thorough in collecting info on the setup of your motorcycle so he can better set up your carburetor. Installation went very smoothly, and all I ended up doing was readjusting the idle speed after I had finished. The bike runs better now than when I purchased it! I definitely recommend using this company if you are looking to upgrade.

Hellcat 42 carb. Purchased and Max got this to me. Followed detailed instructions on install and in a few hours had my bike running like a champ. Amazing performance improvement. Thanks, well worth the purchase

The primary reason to purchase was to eliminate the carb puke that Roadstars are known for. Max called me when he received the order to make sure he had all the details of my bike correct. He called me when he shipped the order and again the ordered delivered to make sure everything was received in good shape. I told him I would be installing the hellcat the next day. He called again on the day of installation to see if i had any questions. This man is truly interested in customer satisfaction and is available to answer questions during the installation. My bike runs smoother than ever before and will start cold without having to work the throttle to keep it running. Very pleased with the entire process. And no more carb puke.

Wow, I can't believe how much better my bike runs now that I have gone pumpless with the Mikuni Hellcat carb. I was a pleasure working with Max, he made sure I got everything I needed and followed up to make sure I got everything installed and working properly. Thanks, for your help Max

I have a 2000 Yamaha Roadstar 1600, was having problems with my CV carb for a while, did the rebuild and even took it to the mechanic, at the same time I came across Maxair Engineering online and was checking out the Hellcat. Long story short I pulled the trigger and purchase the Hellcat. Max was in contact with me every step of the way from purchase until installed. My bike runs more efficient with more power and torque. I am very happy that I went with the Hellcat thanks Max for all you do.

After continually messing with my stock carburetor and missing out on months of summer riding I finally went searching for a new carb and I am so glad I found Maxair! Max was very thorough making sure my hellcat was tuned just right when I received it. All I had to do was adjust the idle mix screw a quarter turn, set the idle and I was screaming down the road! My Roadstar runs better than it ever has, throttle response is amazing and I still get 48mpg. Best investment you could possibly make to make your Roadstar perform!

Good afternoon, I wanted to let you know that it’d take a pretty large pry bar to remove this smile from my face! My bike has never performed this good, it sounds better, it runs better and the throttle response is far better than the factory carb. Thank you for the amazing communication and customer service. I’m 100% satisfied and can’t thank you enough.