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92mm Flat-Top Piston for GX390/Clone

92mm Flat-Top Piston for GX390/Clone

This is the OEM Flat-Top Piston in our 460cc engines equipped with the 4.51" Connecting Rod .92mm Diameter

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: $24.99
Replacement Rings for Forged Pistons - 92mm

Replacement Rings for Forged Pistons - 92mm

Replacement Piston Ring set for our Ross Forged Dome & Dish Pistons.

  • 92mm Bore
  • File-Fit Recommended
  • Honing of the cylinder to break the glaze recommended before installation

Our Price: $39.99
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
92mm Forged Dome Piston w/Low-Tension Rings & Lightweight Wrist Pin

92mm Forged Dome Piston w/Low-Tension Rings & Lightweight Wrist Pin

Our lightweight Forged Piston is the perfect upgrade for your 92mm bore clone engine (440 & 460). This piston along with a billet rod will complete your bullet-proof engine build. Add reliability and horsepower to an already strong platform.

This pistons has a dome and will increase your compression ratio!

Manufactured in the USA by Ross Racing Pistons

*Requires a 4.45" or 4.41" Connecting Rod

Our Price: $139.99
92mm Forged Flat-Top Piston w/Low-Tension Rings & Lightweight Wrist Pin

92mm Forged Flat-Top Piston w/Low-Tension Rings & Lightweight Wrist Pin

Our lightweight flat-top forged piston is the perfect upgrade for your 92mm bore clone engine (440 & 460). This piston along with a billet rod will complete your bullet-proof engine build. Add reliability and horsepower to an already strong platform.

This is a flat top piston and will increase your compression!

Manufactured in the USA by Ross Racing Pistons

*Requires a 4.45" or 4.41" Connecting Rod

Our Price: $139.99