The Wonderful World of Bicycle Engine Carbs: Pick Your Powerhouse

NT Carb – The Classic Go To

Let’s kick things off with the NT carburetor, the bread and butter of the motorized bike carburetor world. This guy is what you could call “basic” in the best way possible while offering simplicity and reliability. It fits most 66cc and 80cc engines, has a black filter cover with vent holes on the bottom, and even comes with a choke lever on the side for easy starting. It’s especially great for older engines like the PK80, FM80, and ZEDA80!

• When to use: When you want something tried and true, especially on older engines.
• Perfect for: PK80, FM80, ZEDA80 engines.
• Pros: Super easy to use, fits almost anything.
• Cons: Not winning any “most advanced carb” awards, but who cares?

The 80/100 New Version - Tuned to Perfection

Next up, we have the shiny new kid on the block. This carb is standard with the ZEDA100, Phantom85, and ZEDA85 kits. Unlike its NT sibling, this one’s tuned for a slightly richer fuel mix. Think of it as a carb that likes a little extra flavor in its gas cocktail for those more powerful engines. Plus, it rocks a snazzy red cover, so you’ll look cool while blasting down the road.

When to use: When you’ve got a ZEDA100, Phantom85, or ZEDA85 and want smooth, rich fuel delivery.

• Perfect for: ZEDA100, Phantom85, ZEDA85 engine, other 80/100cc engines
• Pros: Already tuned for 80/100cc engines to give a better mix, plus that red cover screams speed.
• Cons: Can be too rich for some smaller engines without tuning

Runtong CNS Carb - The Tinkerer’s Best Friend

For all you gearheads who love to adjust, tune, and tweak, the CNS carb is your dream come true. This bad boy comes with a choke lever on the handlebars, making it easy to start without having to bend down and curse at your bike. Plus, it’s perfect for bikes that need a bit of extra choke adjustment. Oh, and did I mention the air screw for fine-tuning the mixture on the fly? It’s like having a carb that gets you.

• When to use: When your bike engine is a little finicky and needs constant choke adjustment.
• Perfect for: Riders who love to fine-tune or hate a hard-to-reach choke.
• Pros: Choke lever on the handlebars for easy starts, adjustable air screw.
• Cons: Requires more tinkering, but that’s why you’re here, right?

OKO 21mm - The Fuel-Delivering Beast

Now we’re entering the big leagues. The OKO 21mm carb is for hardcore riders with DIO systems who want a massive amount of fuel flowing through their engine. This is a slide-type carb with tuning jets available, so you can adjust to your specific environment. It’s got vent tubes that run along the bike (and conveniently away from you).The last thing you want is fuel spilling on your pants during a high-speed run. Just run the extra-long vent tube down your seat post and out the back!

• When to use: When you’ve got a DIO system and want to unleash serious power.
• Perfect for: DIO engine systems.
• Pros: Tons of fuel flow, tuning jets available, easy adjustment screws, and vent tubes keep things safe.
• Cons: May require multiple tuning steps based on your location, so prepare for some carb Zen.