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Aaron also manufactures the CNC billet pieces you’ll find on our web site, and developed the CNC programs we use for head porting. What kind of head is it? If you don’t see what you’re looking for, please give us a call. Plus, they give you a way to mount a CV44 or Mikuni HSR45 or HSR48 to your bike for even more power. We give a substantial break on the price when you do, and you get some of the best HD/Buell pistons available today. Years of racing experience between the two of us has resulted in a huge knowledge base of what works, and more importantly, what doesn’t, and when you buy from Hammer Performance you get the benefit of all that experience. Aaron’s bikes have also won the award for “Fastest U.S. V-Twin” at the International Speed Trials by Bub in 4 out of the 7 years the event has been running. This process has been used hundreds of times over the years and it’s proven to result in reliable, powerful engines. Years of hard work preparing race and street heads has resulted in Dan’s ability to turn out a perfect set of heads every time. We started this company to bring you the best Harley performance products out there, whether they’re products of our own making or somebody else’s.

Once they’re stripped and inspected, they’re put into the 4-axis CNC machine in this position to get the seat work done. What’s the current seat i.d.? Aaron’s passion is land speed racing at the Bonneville Salt Flats. Horsepower is the name of the game at Bonneville and Dan prepares all of the heads that go on Aaron’s engines, and has for several years. Dan has been porting heads for years, providing all of the head porting services for Honovacie nástroje a well-known major shop, using his own CNC machine and other equipment. Dan is also an AHDRA National Champion in SEP, and has won the High Stakes Shootout twice and been runner up twice. HAMMER Dan has primarily made his mark in AHDRA drag racing, with numerous wins in the highly competitive “Hot Street” heads-up class on his Buell S1W. HAMMER PERFORMANCE has developed a 4-axis CNC process to perform this critical task that does a perfect job first time, every time! At HAMMER PERFORMANCE, we’ve got a fixture and a CNC program that does a PERFECT job every time. Our 4-Axis CNC process cut it’s first head in 2003, and since then we’ve run literally thousands of head through it, producing powerful street and race bikes across the globe. Th᠎is art ic le has ​been w​ritten with the help of G SA　C​on᠎tent G en​er ator Dem oversion.

This is one of the first steps to get done to any set of heads. Well, there are a lot of possibilities on this step. Factory engines are engineered to be assembled but performance engines need a whole lot more attention to detail. Chances are we can either do it for you or send you to someone who can. We offer this service either with or without the lower left dowel pin hole retained. Let HAMMER PERFORMANCE remove this bottleneck with our intake manifold porting service. Let us build your street or race engine! Let HAMMER PERFORMANCE do it right! A must for high performance projects. High performance engines require special checks and procedures that dealership techs aren’t always familiar with. We’ll shape and size the inside of your intake manifold for maximum cylinder fill and leave a surface finish that encourages fuel mixing and atomization. If you want the highest quality cylinder boring and honing service for your Sportster or Buell, matched to the best pistons you can buy, look no farther than HAMMER PERFORMANCE! Accurate case boring can make all the difference in the world for long piston life.

Can you say “domination”? Your great engine kit, head porting, and cams will do nothing for you if your stock intake manifold chokes the air flow into your engine. Computer designed and then CNC machined from a solid chunk of 6061T6 billet aluminum, these manifolds deliver maximum flow which translates directly into more TORQUE and POWER for your hot rod Sportster. Send us your cover and we’ll send it back professionally machined and ready for final clean up/polishing and installation. Trust your engine build to HAMMER PERFORMANCE! At HAMMER PERFORMANCE, we have the tools, knowledge, and experience to do every procedure correctly, from truing your flywheel assembly to clearancing your cam boxes. For that minimalist look, many Sportster & Buell owners like to trim off the excess material behind and below their cam box cover. The only ‘glitch’ in the entire process was a mismatch between the space between the 20×20 aluminum rails on the X-Axis and the size of the plate that supports the controller board. The bores must be straight, at a precise 45 degree angle from each other, and aimed squarely at the crankshaft. We recommend keeping this dowel hole as it provides precise alignment to the cams.