2004 Honda 400ex - Need HELP

[Missouri_2004_400ex]

I have a 2004 400ex, it has a full hmf pipe, jet kit, after market air filter

I want to know how to make it go faster than its current speed of 78.6 mph without messing with the engine please help!

[rappy97]

Front sprocket, tires, rear sprocket, larger carb, drag pipe, cams, oversize piston, head porting, larger valves, striker crank, etc. I could go on all day. It depends on your wallet, how much can you spend. Why do you care about top speed? That's not what wins races...

[marioweldinginc]

^^^^ Yup name your budget first. 16t front sprocket for more top end. Bigger rear wheels etc. Turbo kit.

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[rappy97]

I'm just sayin, why use the EX as a base quad? I do understand that's what you've got for teh time being, but, say you sell the EX for $3,000 and you have $2000 to spend on mods to make "the top speed" higher. So, let's just say you've got $5,000 to work with. For 5g, you could get a 80HP+ banshee that'll kill on ANY 400ex.

Banshee- $2000

CPI Pipes- $450

32mm Carbs- $350

VForce Reeds and Filters- $350

Quality Agressive Dune/Trail or Drag Port- $500-ish

Bore/hone Cylinders- $150

Wiesco Top End Kit- $300-ish

NOSS Head and Domes- $250

4mil Crank- $400

Override Transmission- $300

All that totals $4,950, rough prices, I estimated on the high side too.

[marioweldinginc]

Damn how the hell you getting 3000 for an EX? Specially without reverse??

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[rappy97]

I was just throwing numbers out for that, it wasn't exact. Most early EXs here go for $1,500-2,250. 2004-2008 $2,500-3,500...

[swampcat07]

It sure is a buyers market these days.