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Yz 450f Yz450f Big Gun Exhaust Over Rev Box Cdi Ignition 2003-2006 40-R13

Yz 450f Yz450f Big Gun Exhaust Over Rev Box Cdi Ignition 2003-2006 40-R13

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  • MSRP: $159.99
  • You Save: $32.00 (20%)
  • Brand: Big Gun Exhaust
  • Condition: New
  • SKU: 40-R13
  • Manufacturer Part Number: 40-R13
  • Surface Finish: Black
  • Warranty: 1 Year
  • Part Brand: Big Gun
  • Part Type: Electrical Components
  • Make: Yamaha
  • Placement on Vehicle: Front
  • Fits: Dirt Bike
  • Compatible Make: Yamaha
  • Compatible Model: Yz450f
  • Years: 2003-2006


This part fits;

Yamaha YZ450F Motorcycle 2003, 2004, 2005, 2006 Year models

Part #40-R13

Retail Price $159.99 plus tax


*Improves 750rpm Enhanced over stock.*


The Big Gun CDI Rev-Box for is the Best Snap and go performance for the money. No modifications required just snap and go!


  • Big Gun CDI Rev-Box's give your bike an extra 3HP
  • Slight timing curve change for extra HP throughout the powerband.
  • Works great on stock and modified engines.
  • Improves throttle response.
  • Simple installation, no programming, no lap-top computers, just replace stock unit and go riding.
  • Proven and rider tested for satisfaction.
  • Big Gun includes a 6-month warranty with the Rev Boxes (first in the industry).


Contact information; if you have any questions, we are here to help

About Us

We specialize in superior aftermarket motorcycle performance parts. If you need anything aftermarket parts we are largest online retailer Motorcycle Warehouse outlet offering fast free shipping in USA. We stock a full line of performance parts & accessories for Motorcycles, ATV, UTV and Dirt Bikes.

Questions call toll free 800-431-1853

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