TP ENGINEERING® PRO-SERIES® 121" Engine Evolution Style Big Twin Harley® Fits 1984 Thru 1999.

TP ENGINEERING® PRO-SERIES® 121"Polished Engine Evolution Style Big Twin Harley® Fits 1984 Thru 1999.

SAVE Over $3,600!!!

• Fits Harley Evolution Big Twin Applications 1984 Thru 1999.
•  Pro-Series® motors are assembled with the highest quality American-made components.
• Feature Pro-Series Breakerless Ignitions and Mikuni Carburetors complete with air cleaner.
• Include TP Engineering's chrome billet pro-vent rocker boxes , chrome billet cam cover, patented billet oil pump, forged flat-top pistons, CNC-ported heads, forged steel roller rocker arms, stainless steel valves and American-made tappet blocks .
• Has manual compression releases installed .
• Engine case, cylinders, cylinder heads, oil pump and tappets are polished to a high-luster finish .
• All assembled Pro-Series engines are pre-run to ensure consistent quality and performance right out of the box .
• Fully Polished.
• MADE IN THE USA.

• Bore 4.125" Stroke 4.5"
• Compression 10.4:1
• Intake valve Diameter 2"
• Exhaust valve Diameter 1.625"
• Intake duration @ 0.053 262 Degrees
• Exhaust duration @ 0.053 266 Degrees
• Valve lift Intake 0.630 Degrees
• Valve lift Exhaust0.0650 Degrees
• Carburetion 45MM Mikuni
• Pushrods Adjustable
• Rocker Boxes Pro-Vent® Chrome Billet
• Ignition Pro-Series® Breakerless Single-Fire
• Rocker Arms Pro-Series® Forged steel Roller
• Oil Pump Pro-Series® Patented Billet
• Compression Releases are Standard
• Horsepower 121 @ 5500RPM
  
• Torque 125 @ 3900RPM

• 121" Fully Polished Engine
• Manufacturers Statement of origin