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Wild Things® Forged & Billet Heads

for Twin Cam...

The most technologically advanced heads on the market. Mike Roland's designs carefully balance the production of awesome horsepower and torque with the important qualities of a good street motor - starts as easy as a stock bike, runs on pump gas without any detonation, runs cooler than stock, and is as tractable as a stock bike.

Features:

  • Efficient bathtub combustion chambers
  • Proprietary valves designed on the flow bench to match Wild Things® ports
  • Heads come completely assembled with High-strength stainless steel valves and high-performance valve springs with titanium top retainers
  • Intake Ports - 3/8" raised high flow and high velocity with 1.980" stainless intake valves
  • Exhaust Ports - High velocity constant radius "D" shaped high flow ports with 1.630" stainless exhaust valves
  • Fits all '99-'09 Twin CamÑIncluding '08-'09 Touring
  • Set up to take up to .640" lift cam
  • Utilizes equal length head bolts to minimize cylinder distortion and promote consistent head gasket squish. Requires purchase of four long OEM headbolts, sold separately. (H-D P/N 16478-85A)
  • Extra cooling fin area, more than any other heads on the market
  • Larger and improved breather passages, requires crankcase breather kit with 1/2"-13 breather bolts
  • Larger and relocated oil drains get the oil down out of the heads
  • All stock parts will mount to head
  • '06-'09 with Wild Things Throttle Body require P/N 457 Flanges (If using stock Throttle Body, must use '05-earlier stock flanges)

For Domed Piston -95" applications only
  • Requires use of Wild Things® Pistons, P/Ns 444 or 443.
  • Combustion chamber machined with 15-degree squish
  • Yields 10.5 to 1 compression ratio
428 Wild Things Forged Street Heads, Black - For Wild Things Domed Pistons (set) $1,995.99 Qty
431 Wild Things Forged Street Heads, Bright Bead Blast - For Wild Things Domed Pistons (set) $1,499.59 * Qty
432 Wild Things Billet Street Heads, Polished - For Wild Things Domed or Dish Dome Pistons (set)   $2,995.99 Qty
For Flat Top Piston
  • 81cc combustion chambers
  • Yields 9.5 to 1 compression ratio in 95" applications
  • Yields 10.5 to 1 compression ratio in 103" applications
429 Wild Things Forged Street Heads, Black - For Flat Top Pistons (set) $1,995.99 Qty
* clearance item(s)