Step up the performance with our Stage 3 kit! This kit comes with everything that kit 2 comes with plus our newly designed cylinder head and header package! The exhaust flange on this head has been changed and our header is the best on the market. No need to worry about breakage as the flange on this pipe features a 1/4" thick flange and will not warp! The header features a three stage pipe and has been dyno and track proven! Also with this kit you will get our 1.12:1 ratio rockers! These rockers will not fail under the high spring forces of a modified valvetrain setup! Also, we've increased the valve lift from .355" to a whopping .397" lift by just adding our rockers to this package!
Specifications
Intake valve diameter
1.380"
Exhaust valve diameter
1.225"
Intake lobe lift
.355"
Intake lobe duration @ .050" cam lift
252 degrees
Exhaust lobe lift
.355"
Exhaust lobe duration @ .050" cam lift
252 degrees
Compression release
Yes
Pushrod length
7" (tube end to tube end..cut to length)
Pushrod end diameter
3/16" ball (press in)
Pushrod diameter
1/4"
Pushrod wall thickness
.030"
Features
Benefits
Cylinder head
Direct replacement cylinder head with a re-designed exhaust port flange!
Racing header
Our newly designed karting header, which features a 1/4" thick flange to eliminate warpage!
Increased rocker arm ratio
Increase the valve lift and power of your engine by adding these rocker arms to your GX340 or GX390..they are much stronger than any reinforced rocker!
Billet Flywheel
Lightweight, low inertia, billet aluminum flywheel that is much safer than the factory heavy cast iron flywheel and the billet flywheel will increase your acceleration!
Performance valve springs
High quality silicon material valve springs that match our camshaft profile
Chrome moly pushrods
Made by the industry leader Comp Cams! These pushrods will eliminate pushrod flex that robs power from your engine!
Racing camshaft design
The heart of making power in an engine is camshaft knowledge! Our camshaft profiles will get you the power your needing to propel your kart to the front of the field!
