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PWK 42mm Flat Slide Carburetor for 500cc 650cc Big Bore ATV
PWK 42mm Flat Slide Carburetor for 500cc 650cc Big Bore ATV
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Product Overview
This PWK 42mm flat slide carburetor is the maximum-flow option in this series, designed for 500cc–650cc big-bore dirt bikes, ATVs, quads, UTVs, and high-performance off-road builds. It is best suited for engines that need high airflow at upper RPM and have supporting modifications to match the larger carburetor size.
The 42mm size is not intended for small or mildly modified engines. It works best when the intake, exhaust, cam, displacement, and tuning setup can support the additional airflow. Its flat-slide design helps reduce intake restriction, while the anodized aluminum alloy construction supports demanding riding environments.
Product Compatibility
| Category | Fitment |
|---|---|
| Engine Range | 500cc–650cc big-bore engines |
| Vehicle Type | Dirt Bike, ATV, Quad, UTV, Performance Scooter |
| Carburetor Type | PWK Flat-Slide |
| Best Use | Maximum airflow / big-bore performance |
Specifications
| Specification | Details |
|---|---|
| Model | PWK 42mm |
| Carburetor Type | Flat-Slide Performance Carburetor |
| Intake Size | 42mm |
| Material | Aluminum alloy |
| Finish | Anodized surface |
| Recommended Engine Range | 500cc–650cc |
| Condition | New |
Key Features
- 42mm maximum-flow size for big-bore engines
- Designed for 500cc–650cc high-output builds
- Flat-slide design reduces airflow restriction
- Anodized alloy body improves durability
- Best for modified engines with proper tuning support
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Fitment FAQ
Will this part fit my specific model and year?
As a general guide, 33mm–35mm sizes are better for 250cc–350cc engines, 36mm–38mm sizes are better for 400cc–500cc builds, and 40mm–42mm sizes are designed for 500cc–650cc big-bore engines. Final fitment depends on your engine setup and modifications.
Do I need to match the OEM part number?
No. This is an aftermarket PWK-style flat-slide performance carburetor, not a factory OEM direct replacement. Please compare physical dimensions, cable connection, choke style, intake/outlet size, and product photos before purchase.
What models or situations does this part not fit?
This carburetor may not fit stock or lightly modified engines that cannot support the selected intake size. It may also not fit machines with incompatible intake manifolds, throttle cables, choke systems, air filter sizes, or fuel line layouts.
What should I check before ordering?
Before ordering, please confirm your engine displacement, current carburetor size, intake manifold diameter, throttle cable style, choke type, fuel line layout, air filter fitment, and available installation space. This is a performance carburetor, so tuning and jetting adjustment may be required.