Kuryakyn 428 - BLK FORGED HEAD - DOMED PISTONS

SPECIFICATION SHEET

wild things® forged & billet heads for Twin Cam

428, Wild Things Forged Street Heads, Black - For Wild Things Domed or Dish Dome Pistons (set), The most technologically advanced heads on the market. Mike Roland’s designs carefully balance the production of awesome horsepower & 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, & is as tractable as a stock bike.

for 95” Domed Piston or 103” Dish Dome Piston applications

• 95” build requires use of Wild Things Pistons (P/Ns 444 or 443)
• 103” builds require use of Dish Domed Pistons (P/N’s 475 or 459)
• Combustion chamber machined with 15-degree squish
• Yields 10.5 to 1 compression ratio