Boyesen QuickShot3 Adjustable Pump Cover
A07-14003 (MFG #: APC-3)
$220.99
Sale price
$220.99
Regular price
$220.99
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Boyesen QuickShot3 Adjustable Pump Cover for Yamaha WR450F Dirt Bike
Boyesen QuickShot3 Adjustable Pump Cover for Yamaha WR450F Dirt Bike
$220.99
Sale price
$220.99
Regular price
$220.99
SKU:A07-14003
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Description
The Patented Boyesen QuickShot 3's triple effect: 1. Completely fills the pump chamber with fuel 2. Eliminates troublesome air and 3. Provides an adjustable leak jet circuit for simple hand tuning.
The Result: The ultimate in adjustable fuel injection.
FEATURES
- Tunable leak jet circuit maximizes volume of fuel and duration of fuel spray for any condition.
- Investment cast and finished to precise tolerances.
- High volume vertical check valve located in the QS3 for precise, consistent fuel metering.
- Stops hesitation and bog.
- Instant throttle response and improved low end performance.
- Fits All Keihin FCR carbs, is simple to bolt-on.
Technical Specifications
- MFG. Part Number APC-3
Vehicle Information
Yamaha WR450F Dirt Bike (2003-2026)
The Yamaha WR450F, an iconic off-road and enduro motorcycle, was introduced in 2003 and has continued to evolve through 2026. Powered by a 449cc (often rounded to 450cc) liquid-cooled, four-stroke engine, it is renowned for its versatility and off-road performance. While generally offered as a single model without distinct trim levels, the WR450F has undergone several major redesigns over the years. Early versions, from 2003 to 2011, were carbureted. A significant change occurred in 2012 with the adoption of electronic fuel injection and a new aluminum frame based on the YZ450F, enhancing handling and power delivery. Other notable evolutions include the introduction of the "reversed" engine design in 2015 and substantial engine and chassis updates in 2019 and 2021, aimed at optimizing enduro performance and efficiency. FAQ:
Q: Is this part compatible with my Yamaha WR450F?
A: To ensure perfect compatibility, please use the year and edition selector on this page.
Maintenance
| Component | Interval | Details |
| Engine Oil and Oil Filter | Every 1,000 km or 5 rides (2003); Every 10 h (recreational) or 5 h (aggressive/race) for other years | Replace filter with each oil change. Approximately 1.1 L of oil with filter change. |
| Air Filter | After break-in and every race (2003); Every 15 h (recreational) or 5 h (aggressive/race) for most years | Clean and re-oil regularly. Inspect and replace if damaged. Interval may be 10 h for recreational riding on some years (e.g., 2015). |
| Spark Plug | Inspection every 500 km or every 3 races (2003); Inspection after break-in and every race (2006) | Periodic inspection is recommended for all model years. |
| Coolant | Check level before each ride | Inspect hoses for leaks or wear. |
| Drive Chain | Every 5-10 h | Clean and lubricate. The WR450F uses a chain, not a belt. |
Maintenance intervals may vary by model year and riding style. Always consult the official owner's manual for precise information.