Item No: NR-390-BLUESTRIPE-PAIR
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)
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Item No: NR-390-DUAL-PAIR
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)
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Item No: NR-VELSTACK-390
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
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Item No: NR-420PISTONKIT-HEMI-TO
90mm Aftermarket Flat-top Piston 420cc Predators. Will fit most 390 style engines.
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Item No: NR-420PISTONKIT
90mm Aftermarket Flat-top Piston for big bore GX390s. Fits stock bore on 420 Predators (non-hemi).
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Item No: NR-24BOREDCARB
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)
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Item No: NR-AIRFILTERKIT-390
Race Air Filter Kit, Velocity Stack Style - GX270, GX390, 13/15hp & 420/460cc OHV
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Item No: 6270
List Price: $69.99
EARLYBIRD SALE: $59.95
You Save: $10.04 (14 %)
ARC Billet Rod for the GX 200 or 196cc Clone.
It is one of our Pro Series Rods, featuring ARC's trademark forced oil dipper.
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Item No:
Basic kit for improving the performance of GX390s, 420 Predators, 13/15 hp Chinese OHVs. Simple to install, you can expect significant performance increases.
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Item No: 6057
List Price: $159.00
EARLYBIRD SALE: $139.98
You Save: $19.02 (12 %)
Billet Sidecover for GX200/Clone/Predator Hemi
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Item No: 6058
List Price: $159.00
EARLYBIRD SALE: $139.98
You Save: $19.02 (12 %)
Billet Sidecover for Predator 212 (non-hemi)
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Item No:
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).
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Item No: NR-390CAM-307
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
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Item No: 6623
Flywheel, Billet, GX390 & 420 Predators, Recoil Start
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Item No: 6059
Billet Sidecover for GX390/420
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Item No:
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.
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