Rev Box

[HondaEXrider22]

What do these do? ARe they worth it? On Big Gun's site it has a rev box for the 250 ex adn say its will add 3HP and 12000 RPM

Big Gun Rev Box TRX250EX (01-05) Adds up to 3 horsepower once snapped in. Comes ready to install and go. Allows RPM to rev out 1200 RPM higher than stock while advancing the timing for a bit more torque on the bottom end.


Is this true and do these work? Worth $140.00?

[blastereatin250]

I was thinking about getting a rev box, but decided not to because I didn't want to wreck my motor from floating valves. I also heard they don't really do anything unless you have tons of mods on your engine. My dad has a rev box on his, it makes it a little faster, but not $140 worth.

after you get a pipe filter and cam it makes a lot of deference def. $140 worth but untill you get those itsnot that noticeable