Sinister M8 Stage 1 Dyno sheet highlighted on Zipper's Performance site

HSS-Zippers Red Shift 468

March 2, 2018 - HSS is making it's mark on the V-twin performance scene as we were highlighted on Zipper's Performance web site displaying the Dyno performance results using their Red Shift 468 cam for the H-D Milwaukee 8 engine!
This dyno pull netted 106.95 peak horsepower with a 124.53 ft lbs of torque! YES! We have recipes to wake up your factory M-8 performance! Call us today!

Click this link to check it out! Zipper's Performance


HSS Developing New Milwaukee 8 Power Packages!

Milwaukee8 teaser

Excitement is abound with the news from Milwaukee as Harley-Davidson Motor Company announced its new 107 ci "Milwaukee-Eight" power plant that will originally be installed in the new 2017 Touring models. The performance industry is abuzz of power-enhancement packages being developed for the new generation of the new Harley powerplant.

Sinister Line of Performance Engine Kits are Launching!

sinister107 sellshtExtensive research and development has gone into our new "Sinister" line of engine performance kits. HSS designed CNC cylinder heads performance matched to the best engine components available allow us to offer our customers repeatable and dyno-test proven horsepower for "feel-it-in-the-seat" performance! Sinister V-Twin packages for 103ci, 107ci, 117ci and 124ci displacements.

Click on the Sinister 107 Proof flyer to enlarge!


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