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Billet Rods & Flywheels

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Aluminum Flywheel Screen Guard for Gx390/Clone

Aluminum Flywheel Screen Guard for Gx390/Clone

Our Aluminum flywheel / blower housing screens limit the amount of air that can be drawn into the housing to maintain engine temperatures and ensure peak performance. Additionally, there is a 2.5" access hole for starter boxes.

If you are removing your pull starter, this screen will cover the hole in your blower shroud and prevent any large or unintended objects (fingers, toes, etc) from getting into your flywheel.

Our Price: $9.99
Replacement Rod Bearings for Billet Rod - GX340/390 & 420/440/460 Clones

Replacement Rod Bearings for Billet Rod - GX340/390 & 420/440/460 Clones

Replacement Rod Bearings

Our Price: $19.99
Billet Connecting Rod - 4.510"

Billet Connecting Rod - 4.510"

Do you have a GX390/420/440 engine and want to beef it up, get alittle more performance, and stay on a budget? This is the rod for you!

This is the only billet connecting rod available that will fit a GX390/GX420/GX440 engine with ZERO block & balance shaft clearancing required. If you use one of our performance camshafts, it will clear that too! No need to whip out the grinder!

The extended .100" length from the standard 4.41" rods gives you the following benefits:

1. Allows you to machine your stock piston down to a flat top which increases compression ratio (Instead of milling the cylinder head) and lightens the piston.
2. A lighter piston is more reliable & revs easier.
3. A flat top piston provides better flame propagation which equals a more efficient burn.
4. A longer rod reduces piston speed and increases reliability.
5. A billet rod is drastically stronger than the factory cast rod.
6. A babbit bearing nearly eliminates the chances of crankshaft journal gall from lack of lubrication.

Rod Bearings included.
Made in the USA from 7075 Aluminum

Our Price: $99.99
92mm Flat Piston & 4.51" Billet Rod Combo

92mm Flat Piston & 4.51" Billet Rod Combo

Do you have a GX390/420/440 engine and want to beef it up, get alittle more performance, and stay on a budget? This is the rod/piston combo for you!

This is the only billet connecting rod available that will fit a GX390/GX420/GX440 engine with ZERO block & balance shaft clearancing required. If you use one of our performance camshafts, it will clear that too! No need to whip out the grinder!

The extended .100" length from the standard 4.41" rods gives you the following benefits:

  1. Allows you to machine your stock piston down to a flat top which increases compression ratio (Instead of milling the cylinder head) and lightens the piston.
  2. A lighter piston is more reliable & revs easier.
  3. A flat top piston provides better flame propagation which equals a more efficient burn.
  4. A longer rod reduces piston speed and increases reliability.
  5. A billet rod is drastically stronger than the factory cast rod.
  6. A babbit bearing nearly eliminates the chances of crankshaft journal gall from lack of lubrication.

Rod Bearings included. Made in the USA from 7075 Aluminum

This is the OEM Flat-Top Piston in our 460cc engines equipped with the 4.51" Connecting Rod.

92mm Diameter

Piston Rings, Wrist Pin & Locks Included

Will also fit 440cc engines with a 4.51" Connecting Rod. GX390s & 420s will need to be bored out!

Our Price: $124.99
Billet Connecting Rod - 4.450"

Billet Connecting Rod - 4.450"

  • Extended Length (4.450") Billet Rod for our 460cc Engines
  • ARP Rod bolts and Bearing included.
  • MINOR CLEARANCING TO THE CRANKCASE AND/OR BALANCE SHAFT REQUIRED!
  • May not fit Duromax brand of Clone engines.

Our Price: $139.99