Carburetor PZ19 19mm Hand Lever Tune-Up Kit for 50cc–135cc ATV, CRF50, CRF70, Pit Bike

GOOFIT PZ19 19mm "Master Refresh" Kit for 50cc–135cc Engines

The ultimate all-in-one recovery kit for your machine. The GOOFIT PZ19 Master Kit is designed for riders who don't just want a new carburetor—they want a factory-fresh engine feel. This comprehensive bundle is engineered for 4-stroke 50cc to 135cc horizontal engines, providing every critical component needed to overhaul your intake and ignition systems in a single afternoon.

Featuring a manual hand lever choke, this carburetor is built for mechanical simplicity and reliability. Whether you are refreshing a Honda CRF50F/CRF70F or a high-performance 125cc pit bike, the included high-flow air filter and spark plug work together to ensure crisp throttle response and consistent power delivery.

Product Compatibility

• Honda Models: CRF50F, CRF70F, CRF80F.
• Engine Type: 4-Stroke 50cc, 70cc, 90cc, 100cc, 110cc, 125cc, and 135cc Horizontal Engines.
• Vehicle Types: Dirt Bikes, Pit Bikes, ATVs, Quads, and Go-Karts.
• Fitment: Universal replacement for most Chinese-manufactured brands including Taotao, Coolster, SSR, and Roketa.

Key Technical Specifications:

• Intake Inside Diameter: 19mm (0.74")
• Mounting Bolt Spacing: 48mm (1.88")
• Air Filter Mount (ID): 35mm (1.37")
• Air Filter Interface (OD): 37mm (1.45")
• Choke Type: Manual Hand Lever.

Why Choose the GOOFIT Master Refresh Kit?

• Complete System Overhaul: Why stop at the carburetor? By replacing the Spark Plug, Air Filter, and Fuel Filter at the same time, you eliminate multiple points of failure, ensuring your engine runs perfectly on the first try.
• Precision Air-Fuel Atomization: The PZ19 venturi is machined to provide a surgical mixture of air and gas, eliminating the "bogging" and stalling issues common in aging factory setups.
• Engine Longevity: The included high-efficiency fuel filter keeps tank sediment out of your new jets, while the high-flow air filter prevents trail dust from damaging your cylinder walls.
• Easy "Bolt-On" Installation: Designed to match factory mounting specs, this kit includes two precision-cut gaskets for a vacuum-tight seal, making it ideal for DIY parents and hobbyists.

What's in the Box?

• 1x PZ19 Hand Lever Carburetor
• 1x 35mm Performance Air Filter
• 1x High-Output Spark Plug
• 1x Inline Fuel Filter
• 2x Mounting Gaskets