PREDATOR 420 Parts

Predator 420 Engine
VIEW PREDATOR 420
You can buy the Predator Engine on this page
The parts shown below all fit the Predator
  Predator 420 Engine 13 HP (420cc) OHV Horizontal Shaft Gas Engine
Predator 420 PARTS
Many bolt-on upgrades can be added to bump up this engine to an amazing hp. All the parts and info you will need can be found on this page. These upgrades will help you unleash the power of your engine. close course competition only. not for road use
Displaying products 1 - 16 of 16 results
Springs, Valve, HD 50lb, GX270, GX390s & 420 Predators
Item No: NR-390-BLUESTRIPE-PAIR
EARLYBIRD SALE: $14.95
Spring, Valve, Heavy Duty, set (Fits 240, 270, 340, & 390s). Approx 50 lbs at 1.125 installed height, 42lbs at 1.2, with 110 lb open pressure (.375 lift)
View Springs, Valve, HD 50lb, GX270, GX390s & 420 Predators
Springs, Valve, HD 65lb, GX270, GX390s & 420 Predators
Item No: NR-390-DUAL-PAIR
EARLYBIRD SALE: $14.95
Spring, Valve, Heavy Duty, set (Fits 240, 270, 340, & 390s). Approx 65 lbs at 1.125 installed height, 42lbs at 1.2, with 110 lb open pressure (.375 lift)
View Springs, Valve, HD 65lb, GX270, GX390s & 420 Predators
Adapter, Air Filter, GX270, GX390, & 420cc Carbs
Item No: NR-VELSTACK-390
EARLYBIRD SALE: $21.95
Designed for the GX340/390 stock Carburetor. Can be used with or without an Air Filter. Accepts Choke Bracket Holder (not included) Will work on GX270s, GX390s, and 13/15hp Chinese OHVs. Will also work on GX200s & 6.5 Chinese OHVs using GX390 style
View Adapter, Air Filter, GX270, GX390, & 420cc Carbs
Piston, 90mm Flat Top for 420cc Hemi Predators
Item No: NR-420PISTONKIT-HEMI-TO
EARLYBIRD SALE: $21.95
90mm Aftermarket Flat-top Piston 420cc Predators. Will fit most 390 style engines.
View Piston, 90mm Flat Top for 420cc Hemi Predators
Piston, 90mm Flat Top for Predator 420 OHV & GX390
Item No: NR-420PISTONKIT
EARLYBIRD SALE: $35.95
90mm Aftermarket Flat-top Piston for big bore GX390s. Fits stock bore on 420 Predators (non-hemi).
View Piston, 90mm Flat Top for Predator 420 OHV & GX390
High Flow Air Filter, GX270/GX390, 420cc Predators
Item No: NR-AIRFILTERKIT-390
EARLYBIRD SALE: $39.95
Race Air Filter Kit, Velocity Stack Style - GX270, GX390, 13/15hp & 420/460cc OHV
View High Flow Air Filter, GX270/GX390, 420cc Predators
Carburetor, 24mm Bored for the GX390 & 420 Predator
Item No: NR-24BOREDCARB
EARLYBIRD SALE: $39.95
These 24mm bored carburetors come with a 3rd Circuit to tune Intermediate range performance and provide your GX390/Clone engine with the extra air & fuel it needs in a Mini-bike or Go-Kart application. Note: These aftermarket Carbs (not genuine Hondas)
View Carburetor, 24mm Bored for the GX390 & 420 Predator
Header Pipe, fits Honda GX270, GX390, & 420cc Predator
Item No: NR-390TRACTORPIPE
EARLYBIRD SALE: $58.95
Header Pipe, fits Honda GX270, GX390, & 420cc Predator
View Header Pipe, fits Honda GX270, GX390, & 420cc Predator
Header, Super Snake - GX270, GX390, & 420cc Predator
Item No: NR-390-RTTSS
List Price: $84.95
EARLYBIRD SALE: $78.95
You Save: $6.00 (7 %)
View Header, Super Snake - GX270, GX390, & 420cc Predator
Stage 1 Hop Up Kit, GX340/GX390, 420cc Predators
Item No:
EARLYBIRD SALE: $79.95
Basic kit for improving the performance of GX390s, 420 Predators, 13/15 hp Chinese OHVs. Simple to install, you can expect significant performance increases.
View Stage 1 Hop Up Kit, GX340/GX390, 420cc Predators
Camshaft, 306 Series, Honda GX240, GX270, GX390, 420 Predators
Item No:
EARLYBIRD SALE: $144.95
306 SERIES - Race cam with awesome mid-range power. Serious race cam with awesome mid-range power camshaft for serious motors. Lobe designed esp. for Honda 270 - 390 Motors. Approx .306 lift and 240 duration (at .050).
View Camshaft, 306 Series, Honda GX240, GX270, GX390, 420 Predators
Camshaft, 307 Series, Honda GX240, GX270, GX390, 420 Predators
Item No: NR-390CAM-307
EARLYBIRD SALE: $144.95
307 SERIES camshaft for serious motors and big tracks. Approx .307 lift and 260 duration. This cam was 6 month in development. Special Ramp Designed for running 12 to 1 or higher compressions using Race Gas or Methanol. Use with Dual springs and 1.3 rocke
View Camshaft, 307 Series, Honda GX240, GX270, GX390, 420 Predators
Billet Flywheel, GX390 & 420 Predators, Recoil Start
Item No: 6623
EARLYBIRD SALE: $185.00
Flywheel, Billet, GX390 & 420 Predators, Recoil Start
View Billet Flywheel, GX390 & 420 Predators, Recoil Start
Billet Sidecover for Honda GX390/420
Item No: 6059
EARLYBIRD SALE: $189.95
Billet Sidecover for GX390/420
View Billet Sidecover for Honda GX390/420
Stage 2 Hop Up Kit - GX340/GX390, 420 Predators
Item No:
EARLYBIRD SALE: $449.95
As step up from the Stage 1, this kit is designed to improve the power for the GX340s and GX390s along with improving the durability.
View Stage 2 Hop Up Kit - GX340/GX390, 420 Predators
Predator 13 HP (420cc) OHV Horizontal Shaft Gas Engine EPA/CARB
Item No: 69736
List Price: $359.00
EARLYBIRD SALE: $339.95
You Save: $19.05 (5 %)
13hp Predator 420cc gasoline engine has gas-saving overhead valves for cooler, cleaner performance and longer life. The horizontal shaft is ball-bearing mounted, making this gas engine an ideal replacement for most standard engine configurations.
View Predator 13 HP (420cc) OHV Horizontal Shaft Gas Engine EPA/CARB

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