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Welcome to the Honda TRX Forum - Your Honda TRX ATV Community
Apr 28, 2009 - 11:39 PM - by Admin
Welcome to TRXForums.com - The newest Honda TRX Forum and Owners Club. The site is dedicated to all models of the Honda TRX including the Honda TRX700XX / Honda TRX450R / Honda TRX400X / Honda TRX300X / Honda TRX250X / TRX90X. There are many areas of discussions ranging from TRX Maintenance tips, TRX Repair help, TRX performance modifications, TRX Racing, TRX Accessories, and much more! If your new to the site please take a moment and register to enjoy all of the features of the site, it's free!

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8 Replies | 116,642 Views
How Much HP Am I Gaining? A Fun Post!
Nov 04, 2015 - 9:17 AM - by Ryan20Wright
I am planning on doing some good power upgrade to my 05 TRX450 here soon & I will list what all I am going to do to my quad little by little and I was curious of how MUCH power do you think I will end with and I will put my guess at the End as well. I just kinda Thought this would be fun little Thread for everyone. ALSO I Ride streets Allot for fun "Yes I'm street Legal" I'm in Tucson Arizona so it's legal here and allot of people ride ATV's on streets here. My main reason I am doing all this is so my quad don't have a single bit of struggle anywhere and I can put a Weird look on a few peoples faces when I take off at a Stop Light because Allot of people try to take me at lights and well they usually don't win at trying to out accelerate me till about 75ish due to the damn Rev Limiter lol!

Mods Already Done:
41mm FCR Carb
13:1.1 High Compression Weisco Piston (Stock Bore) 94mm

Next Mods:
Clutch Up Grade Of Course First! "Many People Don't Realize The benefits of better Clutch first"
CRF450X ECU
Porting & Polishing Head
Decking the Head .30 Thousandths
Hot Cams "I May Have A Custom Grind" for Bottom and Mid Range Torque
14/35 Sprockets --- Also if I wanna ride Dunes I will just throw on a smaller front sprocket
HMF Competition Exhaust
"Maybe get the Flywheel Lightened"



My Guess I would be making about 58 to 60HP?

My best speed is 77MPH Bumping off the Limiter other why's...
It could easily achieve 80+ I'm almost 100% Positive after I get aCRF450 ECU soI don; have the Damn Rev Limit of 9500.
0 Replies | 78,695 Views
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