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Boyesen Power Ring
$
129.95
$
123.45
Boyesen
Boyesen Power Wing Highlights: INCREASES horsepower and torque in 2-stroke, 4-stroke and 85cc engines AERODYNAMIC design maximizes velocity...
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Boyesen Quickshot 2 Accelerator Pump Cover
$
99.00
$
94.05
Boyesen
Quickshot 2 Accelerator Pump fills the pump chamber with fuel, and provides instant fuel delivery, eliminating hesitation and bog.
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Boyesen Quickshot 3
$
119.95
$
113.95
Boyesen
Stock accelerator pump covers permit only a 60% - 70% fuel charge in the pump chamber. Turn the throttle and air trapped in the chamber is compressed...
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Boyesen QuickStart
$
179.95
$
170.95
Boyesen
Hot engine starting is no longer a problem for all Keihin FCR Carbs. The patented performance of the proven quickshot system, now with adjustable leak jet...
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DMC EFI Control Unit
$
259.95
DMC
The exclusive DMC Fuel Map optimizes air/fuel ratio at all RPMs for maximized throttle response and horsepower. The DMC EFI Control unit offers more advanced...
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DMC Power Chip
$
39.95
DMC
The DMC Power Chip clips into the LT-R450 diagnostic plug and increases the RPM ceiling by 1000 RPM. It also reduces the stock fuel map restrictions to maximize engine performance.
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Dobeck Fuel Controller
$
220.58
Dobeck
The TFI features simple plug & play installation along with quick and easy adjustment. No need for computers and complex maps, just a screwdriver. Uses...
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Dr D Mod Box
$
299.95
Dubach Racing ( Dr.D )
Fuel Injection is a step forward but stock mapping is just that, stock mapping. If racers choose to modify their ATV or bike, the stock fuel map needs to be...
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Dyna Fuel Injection UTV Controller
$
249.95
Dynatek
The new Dyna Fuel Injection Controller is a plug in module that offers 3 user selectable base fuel curves that are designed to improve engine operation and...
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DynoJet Jet Kits
$
89.00
DynoJet
DynoJet offers a wide range of kits to fit any application. Several jets come in each kit can be applied to your specific needs. Whether your running an...
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Dynojet Power Commander 6
$
529.95
$
499.00
DynoJet
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FCI GNCC-Style Airbox Only
$
175.00
Fuel Custom Intakes
The new YFZ450R GNCC-style airbox from FCI improves the seal, keeps debris away from the filter, and houses the relay, and battery using factory hardware....
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