Keihin PJ 34mm Series Carburetor Brand New – Honda ATC250R TRX250R CR125R 1986-1989
$360.00
Brand new Keihin PJ34 34mm Oval Slide Flat Slide Carburetor for ATV and off-road motorcycles. Features 34mm venturi, 152 main jet, 55 pilot jet and CEG needle, delivering crisp throttle response and smooth power delivery. Suitable for stock and modified engines. Performance upgrade—not a direct bolt-on replacement; aftermarket intake components may be required.
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Keihin PJ 34mm Series Carburetor – Brand New
This brand new Keihin PJ 34mm Series carburetor is designed for ATV and off-road motorcycle applications, including selected Honda two-stroke models such as the ATC250R, TRX250R and CR125R.
Featuring an oval-slide flat-slide design, the PJ34 carburetor allows the engine to respond more quickly than a conventional round-slide carburetor. It provides crisp throttle response and smooth power delivery while offering replaceable main and pilot jets for further tuning.
This carburetor is suitable for both stock and modified engines, making it a practical performance upgrade for riders looking to improve throttle response and fuel delivery.
Features
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Keihin PJ34 34mm oval-slide carburetor
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Designed for ATV and off-road motorcycles
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Oval slide design for quicker engine response
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Flat-slide design for improved performance
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Crisp throttle response
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Smooth power delivery
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Standard baseline jetting installed
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Replaceable main and pilot jets
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Suitable for stock and modified engines
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Spigot-mount design
Standard Jetting
The carburetor comes with the following baseline jetting installed:
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Main Jet: 152
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Pilot Jet: 55
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Needle: CEG
Jetting may require adjustment depending on engine specifications, exhaust system, air intake, altitude, temperature and other operating conditions.
Specifications
| Specification | Details |
|---|---|
| Carburetor Series | Keihin PJ |
| Venturi / Bore | 34mm |
| Design | Oval Slide / Flat Slide |
| Mounting | Spigot Mount |
| Engine Side OD | 40mm |
| Airbox Side OD | 55mm |
| Overall Length | 92mm |
| Main Jet | 152 |
| Pilot Jet | 55 |
| Needle | CEG |
Compatible Applications
Listed applications include:
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Honda ATC250R – 1986–1989
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Honda TRX250R
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Honda CR125R
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Other compatible ATV and off-road two-stroke applications
Important: Fitment can vary depending on the exact motorcycle model, year and intake configuration. Please compare the dimensions and specifications with your original setup before ordering.
Installation Notes
This carburetor is a performance upgrade and is not a direct bolt-on replacement for every application.
Installation may require additional intake components:
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A larger aftermarket intake boot is required to fit the 34mm carburetor.
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An aftermarket air filtration setup or larger airbox boot may be required depending on your intake configuration.
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Throttle cable compatibility should be verified before installation.
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Fuel line compatibility should also be verified before installation.
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Additional jetting and tuning may be required after installation.
Because intake and engine configurations vary, professional installation and carburetor tuning are recommended for optimal performance.
Package Contents
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1 × Keihin PJ 34mm Series Carburetor
Please verify dimensions, mounting requirements, throttle cable, fuel line and intake configuration before purchasing.
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Brand new Keihin PJ34 34mm Oval Slide Flat Slide Carburetor for ATV and off-road motorcycles. Features 34mm venturi, 152 main jet, 55 pilot jet and CEG needle, delivering crisp throttle response and smooth power delivery. Suitable for stock and modified engines. Performance upgrade—not a direct bolt-on replacement; aftermarket intake components may be required.