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Tillotson PK .680 Stock Appearing Gas Carburetor
Tillotson PK .680 Stock Appearing Gas Carburetor
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Tillotson PK .680 Stock Appearing Gas Carburetor

Part Number: PK-680
Online Price: $129.95
PK-680 Tillotson .680 Stock Appearing Carburetor – CNC Venturi for Kart Racing & Mini Bikes
Availability: In Stock.

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Description

PK-680 Tillotson .680 Stock Appearing Carburetor – CNC Machined for Maximum Airflow


The PK-680 Stock Appearing Carburetor is engineered to meet the highest legal performance standards in kart racing and mini bike classes. Featuring a precision .680" CNC-machined venturi, this carb is tuned for gasoline and optimized for maximum airflow—giving your engine the breathing room it needs to compete at the front of the pack.


The .680 bore is the maximum legal size for many stock appearing racing classes, making this carb an ideal choice for racers looking to dominate within class rules. For those seeking elite-level performance beyond .680, we recommend the PK-875 series.


Key Features:

  • .680” CNC Machined Venturi: Maximum legal bore size in most stock classes
  • Tuned for Gasoline: Ready to bolt on and race in gas-specific setups
  • Stock Appearing Design: Built to conform to class rules while maximizing performance
  • Versatile Fitment: Works with a wide range of stock-style engines and cylinder heads
  • Competition-Ready: Ideal for racers wanting serious performance within legal limits


Engine Compatibility:

  • Honda GX200 / Clone 196cc
  • Tillotson 196cc – 268cc
  • Wildcat 223 / 240
  • Ducar 196 / 212 / 224
  • Predator 212 Hemi & Non-Hemi
  • Predator 224 Hemi

Note: This carburetor is designed to fit most stock cast heads. Some tuning and jetting changes may be required depending on your engine setup, class rules, and elevation.

FAQ

Q1: What makes the PK-680 different from other stock carbs?
A: The PK-680 features a precision CNC-machined .680” venturi, the maximum bore in many kart and mini bike racing classes, delivering optimized airflow for better power.


Q2: Is this carburetor legal for stock appearing classes?
A: Yes, the PK-680 is designed to conform to most stock appearing class regulations, but always verify your rulebook before racing.


Q3: What engines does it fit?
A: It fits most stock cast cylinder heads on:

  • Honda GX200 / Clone 196cc
  • Tillotson 196–268cc
  • Wildcat 223 / 240
  • Ducar 196 / 212 / 224
  • Predator 212 (Hemi and Non-Hemi)
  • Predator 224 Hemi


Q4: Do I need to rejet the carburetor?
A: Possibly. While it is gasoline-tuned out of the box, jetting may need adjustment based on your engine setup, altitude, camshaft, and class specs.


Q5: What if I need more performance than .680”?
A: Consider upgrading to the PK-875 series for larger venturi options when class rules allow.


Q6: Does it work on mini bikes and go-karts?
A: Yes, the PK-680 is ideal for both racing go-karts and performance mini bikes using compatible small engines.

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