Product Description
The Stage 2: 420cc Hemi Predator / GX390 Performance Kit is a high-quality upgrade kit that will improve the performance of your engine. This kit includes a range of high-quality components that are specifically designed to work together to increase horsepower, torque, and overall engine performance. The kit includes a Billet Flywheel, Billet Connecting Rod, Dual Valve Spring Set, Side Cover Gasket, Spark Plug, and your choice of Performance Ground Cam - either DJ-3114 .275 Cam or DJ-3112 .308 Cam. These components are made from high-quality materials that can withstand high temperatures and pressure, ensuring long-lasting performance and durability. The installation process is easy, and the kit will provide an exact match for your engine. After installing the Stage 2: 420cc Hemi Predator / GX390 Performance Kit, you can expect improved acceleration, increased top speed, and overall better engine performance. Whether you're using your engine for racing, off-roading, or just for fun, this performance kit is a reliable and cost-effective solution that will help take your engine to the next level.
This performance kit fits the Hemi Predator 420cc and the Honda GX340-GX390 engines.
Our stage 2 performance kit will take your gokart or mini bike to the next level and provide you with tons of horsepower.
Kit includes:
- 6623 Billet Flywheel
- 6272 Billet Connecting Rod
- DJ-3055DS Dual Valve Spring Set
- Side Cover Gasket
- 3910X Spark Plug
- Your choice of Performance Ground Cam:
- DJ-3114 .275 Cam
- DJ-3112 .308 Cam
No returns on this product, if you have any questions, please call before ordering.
Product Videos
Custom Field
Product Reviews
10 Reviews Hide Reviews Show Reviews
-
Can I use on non hemi?
I have a greyhound 66555 420cc non-hemi, will this kit work?
-
So it says I can save $300 if I spend over $500...
So it says I can save $300 if I spend over $500 but when I apply the promo code it doesn't give me the discount
-
440...
will 420 parts fit in a 440 aftermarket rod
-
Love the kit! Only thing that would have been...
Love the kit! Only thing that would have been nice while ordering is to have the 12 point 5/16 socket for the new connecting rod. I have a pretty extensive set of sockets but not the 12 point. Other than that can't wait to get it finished!
-
Stage 2: 420cc Hemi Predator / GX390 Performance...
Stage 2: 420cc Hemi Predator / GX390 Performance Kit
-
Great...
Awesome kit with all you need
-
Gps has what we...
Gopowersports always has all the parts and accessories that the Misfits know and trust this kid really gave my 460 Tillson Wildcat motor some more spunk definitely a great upgrade from the stock internals.
-
420 stage 2...
Awsome boost to my 420 project. Fast delivery. Love go power sports
-
Stage 2: 420cc Hemi Predator / GX390 Performance...
Stage 2: 420cc Hemi Predator / GX390 Performance Kit
-
My go kart...
Very happy with the products and it has made one hell of a difference to my engine