Harley Evolution style 121" Engine By TP Engineering for 84-99 Models and Custom Applications.

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

Save Over $4100 !!!!

• 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 .

•  Polished motors have the crankcases the tappet blocka ,cylinder and head fins and spark plug area polished.

• MADE IN THE USA.

SPECS

• 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 Standar

• Horsepower 121@5500RPM

• Torque 125@3900RPM

Includes

• 121" Polished Engine

• Manufacturers Statement of origin