|
The Thumper 35hp
Our 419cc engine has the following modifications:
Cylinder head ported and milled. Increased flow and velocity.
Stainless steel 31mm exhaust valve & 35mm intake with 6.5mm diameter lash caps.
Chrome moly pushrods.
1.3 ratio roller rocker arms CNC machined from 7000 series alloy.
Valve cover spacer.
55lb valve springs.
ARC Billet rod
Hi Torque camshaft,.350" lift and 223* duration @ .050" lift. Hard face welding is used for protection against lobe wear.
32mm Mikuni carb & manifold with pulse fitting.
UNI air filter.
ARC billet flywheel .
Header Kit.
This engine will rev to 5500+ rpm.
Front disk brakes are mandatory with this upgrade.
|
