I highly recommend! The rev box lets the bike reach max RPM must faster than stock. Not necessarily a horsepower boost, but it allows the bike to optimize the horsepower it already has. It is also a definite" must have" if your ride has motor modifications.
Big Gun Rev Box - Hi-Rev [obs]
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This rev box worked great and added the rpms that i was looking for but when you put this on a trx405r (06)you have to find space for it to sit and cover the used pug ins on the stock ecu so water dose not get in
GREAT PRODUCT! IT WORKS. MOST DEFINITELY NOTICED A DIFFERENCE.THE STOCK 450R HONDA HITS THE REV LIMIT WAY TOO QUICKLY.IF YOU PLAN ON UPGRADES THIS IS A MUST HAVE .TOOK 2 MINUTES TO INSTALL.THANKS