TWIN CAM HEADS, “FEROCITY 2.0” (96-110CUI), Fully Assembled

(1 customer review)


Twin Cam FEROCITY 101 Headset (fully assembled, CNC Billet Aluminum) for the Harley-Davidson™ 96-110CUI TwinCam models.


Available on backorder


  • Speed And Science ® newly re-designed “FEROCITY Rev. 2.0” Billet Aluminum (6061-T6) Heads for the Harley-Davidson™ Twin Cam models.
  • This is a fully assembled, bolt-on set, suitable for all years of the 96-110CUI models with flat-top pistons.
  • Set for up to .650″ valve lift.
  • This system achieves very strong torque curve and very respectable HP that peaks exactly where needed. This makes a superb street engine that will keep going strong for a long time, not just a 1/4 Mile!! We went to great lengths to make sure that our product is user-friendly and easy to service down the road also. No special-order pistons, valves, guides, fasteners, etc. to worry about. Nobody offers that – there’s no hidden cost with our product!!!
  • Re-designed (Rev. 2.0) fast, very efficient ports produce even better power/torque. This headset responses very distinctively to different cams and fuel maps. Your bike will pull hard from the get-go all the way up to the redline. The longevity and fuel mileage won’t suffer either.
  • Proprietary design of the super-fast 85CCM combustion chamber. Hi-octane (e.g. North American 94) pump gas recommended along with the proper tuning.
  • Includes M12x1.25 threaded holes for automatic compression releases.
  • ***The difference in surface finish between the Intake (coarser) and Exhaust (smoother) ports is intentional.
  • Warranty details and conditions are listed in the Installation Manuals ( Manuals download page )

Additional information

Weight22 lbs
Dimensions22 × 12 × 6 in

1 review for TWIN CAM HEADS, “FEROCITY 2.0” (96-110CUI), Fully Assembled

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  1. Carson M. (verified owner)

    Verified reviewVerified review - view originalExternal link

    These heads are a piece of art. Amazing quality!

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