4 Best Aftermarket Parts For ATVs | 8-Piece Kit vs Digital CDI

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A digital CDI (capacitor discharge ignition) with nine built-in curves that let you fine-tune how power is delivered.

You get nine adjustable ignition curves (each one changes the timing of the spark for different throttle feel) in this LK LEAPING KNIGHT CDI, which swaps straight into a GY6-powered scooter, moped, or small ATV from 50cc to 250cc using its standard 6-pin male plug. The box lets you adjust voltage between 8V and 25V without an external battery, meaning you can advance the ignition timing so the engine pulls harder through the mid-range. One reviewer noted that it “runs very strong” and liked the button feature on the yellow case, adding that it feels tough.

This is an AC (alternating current) unit — it gets its power from the stator, not a battery — so it only works on AC models. A couple of buyers accidentally ordered the wrong type, noting the product page could be clearer on the AC-versus-DC split. At just under 9 ounces, the metal-and-plastic shell handles heat well and includes input overheat protection, though there is no warranty included.

Unlike the 8-piece full harness kits below, this is a single-component upgrade for people who want performance tuning, not a whole rewiring job. It is sharper for tuning than the SHIQINHA kit because it lets you adjust nine curves rather than relying on a fixed ignition map. Pair it with a quality coil if your goal is a snappier throttle response on weekend trails.

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Eleven electrical components in one box for under forty bucks — but check the stator (the generator under the flywheel) first.

This SHIQINHA harness kit lands squarely at the value end of the spectrum, packing a wire harness, 5-pin AC CDI (capacitor discharge ignition) box, ignition coil, starter solenoid relay (a switch that sends battery power to the starter motor), voltage regulator (which keeps the charge steady for the battery and lights), key switch, multi-function ATV switch, 6-coil stator (the coil assembly that generates power), spark plug, fuse, and cable ties. It fits Tao Tao, Coolster, Kazuma, Baja, Coleman, Icebear, and most other Chinese 50cc-125cc four-stroke quads — but the brand explicitly says it does not fit GY6 engines or 200cc-250cc bikes with different stators or CDI.

Buyers have had a split experience. One praised it for getting their grandson’s quad running when they were unsure of the exact problem. Another reported the solenoid was a “ground loop with no power,” the ignition coil separated at the spark plug boot, and some power wires were too short for a rear-mounted battery — problems they fixed with their own spare parts. A reviewer on a Rayteck Kodiak said all components physically fit the 110cc bike, but the quad only ran for five minutes before losing spark entirely.

Compared to the GY6 CDI, this is a whole-system swap rather than a targeted performance part. If you have the patience to diagnose a few gremlins and you know your way around a multimeter (a tool that measures voltage and continuity), the all-in price is tough to beat for getting a dead quad moving again.

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An eight-piece electrical set built for the larger-displacement Chinese quads and go karts.

This amavoler kit targets the 150cc to 250cc range that the previous 50-125cc SHIQINHA kit explicitly excludes. It is for bigger ATVs, dune buggies, and dirt pit bikes. At 8.0 Count (the bundle is sold as a set of eight items), it has the same core parts as the smaller kit but does not include a stator, since larger Chinese engines often use separate stators that may already be fine.

Buyer reports are split like the smaller kit. One said it is a “great value for your money” with good wiring and a solid fit. Another called it “terrible” — writing that the harness was very sloppily put together, wire colors for the plugs did not match, nothing worked, and there were no labels on the wiring to indicate what connects where. That mismatch in production consistency is the biggest gamble with these budget megakits.

If you compare it to the GY6 single CDI, the amavoler set gives you a full rewiring solution for larger engines at roughly the same price point as the tuning-only box. It also covers the 150-250cc gap that neither the SHIQINHA nor the GY6 CDI can handle. Just budget extra time to trace every wire yourself if the colors and plugs happen to be off in your particular unit.

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A harness-and-carb combo that simplifies two common failure points in one box.

What makes this EOPOAYI kit different from the others is the addition of a PZ20 carburetor (the part that mixes air and fuel for combustion), a 35mm air filter, an intake manifold, a fuel line, and cleaning tools — alongside the usual wiring harness, 5-pin AC CDI (capacitor discharge ignition), ignition coil, solenoid relay (the switch that sends power to the starter), voltage regulator, key switch, multi-function switch, 6-coil 5-wire stator (the generator coil assembly), spark plug, and fuse. That means you can fix both a no-spark electrical problem and a fuel-delivery issue in a single order. The PZ20 is a smaller carburetor than the PZ22, which the maker says is more fuel-efficient for 70cc to 125cc four-stroke Chinese engines.

The real-world experience mirrors the other budget kits. One buyer called it “the best way and a quick fix to electrical problems” at a great price, and another said the build quality was very good. But one owner of an ATA 110 D Tao Tao reported that multiple parts would not work without modifying the harness, so they went with OEM instead — confirming the recurring theme that fitment varies from quad to quad even within the same brand. The kit is 12V 65W, and the maker strongly recommends professional installation because wrong assembly can stop everything from running.

Compared to the 8-piece amavoler set above, this EOPOAYI kit adds the carburetor and its supporting hardware for a notably higher all-in parts count. If your ATV is newer (not excessively old, as the listing warns) and you need both electrical and fuel-system help, this combo can save a second shipping wait. It also includes a stator, which the amavoler 150-250cc kit does not.