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Tuning Management

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Boyesen QuickStart
$179.95 $170.95
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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FCI GNCC-Style Airbox Only
$175.00
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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RD Precision Main Jets
$150.00
RD
These High Precision Brass carburetor jets are available in dealer selection kits. Mikuni Hex 2 pcs each size. 70 through 230 and 240 through 500 and Keihin...
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Keihin-FCR Power Pump
$142.95
The Power Pump is an accelerator Pump cover that features an adjust able leak jet, allowing you to make easy changes with a screw driver even while the...
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Magnum Intimidator Filter Kit
$139.95 $131.55
Intimidator Filter Kits replace your faulty and restrictive stock air filter and adaptor to give you the performance you want. Includes a billet aluminum...
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Twin Air Power-Flow Kits
$129.95
Don't let the stock set-up rob you of power and engine reliability, these kits eliminate
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Boyesen Power Ring
$129.95 $123.45
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 3
$119.95 $113.95
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 Quickshot 2 Accelerator Pump Cover
$99.00 $94.05
Quickshot 2 Accelerator Pump fills the pump chamber with fuel, and provides instant fuel delivery, eliminating hesitation and bog.
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DynoJet Jet Kits
$89.00
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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Magnum Jet Kit
$89.00
Magnum jet kit includes: pilot jets  main jets Magnum custom needles
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DMC Power Chip
$39.95
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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