I purchased a new 07 leftover 400ex, i did the following so far, HMF slip on, Uni air filter 8-1" holes in the air box lid, 42 pilot & 162 MJ. I want to kick it up a notch in power, a mod or 2, what would most suggest.
I purchased a new 07 leftover 400ex, i did the following so far, HMF slip on, Uni air filter 8-1" holes in the air box lid, 42 pilot & 162 MJ. I want to kick it up a notch in power, a mod or 2, what would most suggest.
Chet
07 400EX
HMF slip on
Uni air filter
#42 pilot #162 main jet
air screw 2 turns out
air box lid modded
upcoming mods
side air scoops
Sparks key
cam
If still stock bore. I heard the Curtis Sparks timing key advance is an awesome and inexpensive mod.
Originally posted by hondarider661
cam
Hondarider661, can you make a cam suggestion, brand ect.
Chet
07 400EX
HMF slip on
Uni air filter
#42 pilot #162 main jet
air screw 2 turns out
air box lid modded
upcoming mods
side air scoops
Sparks key
I have read about the Sparks key, for the riders who has them installed, I have a feeling it will take away some top end is this so, I don't want give up any top end, we have this long railroad bed 3/4 mile where we really wind them out and there times when I am crakin it hard in 4-5 gears
but if the sparks key will help, i will go for it
Chet
07 400EX
HMF slip on
Uni air filter
#42 pilot #162 main jet
air screw 2 turns out
air box lid modded
upcoming mods
side air scoops
Sparks key
im not a 400ex guy. but in my 450r i have a hotcam. there good cams. i got mine used. for cheep.here
hot cam stage 1
rev box
timing key
I did the timing advance key, and I don't remember losing any top end power. If it lost any I did not notice it at all. I think its the best mod you can do for the price of it. But a cam would add power too.
1997 Banshee Yellow/Black, Full skids, Renthal Twinwall bars, Trail tech bar clamp, Trail tech Vapor ,FMF power core silencers, K&N air Filter, K&N Power lid, Works Triple rate front shocks
2007 400ex Black, Full DG skid plates, K&N filter, Parking brake block-off, Sparks timing advance key, Trail Tech bar clamp, Renthal Fat bars, HMF slip on, 450r foot pegs, Maxxis I-Razr front and rear tires, MSR clutch perch, GT Thunder rebuilt rear shock with XC linkage, Hotcams stage 1 cam.
1985 Camaro IROC-Z28.
2008 CBR 1000RR
Agreed on the key and get an xr 400 cam or something. even a stage one hotcam would give you some improvement. I like mine in my 416. It hits pretty hard down low without losing any top. steve
2019 Maverick X3 XDS Turbo R
2003 TRX 400EX
2016 HONDA RANCHER
protect it with skids, then suspension...get the handling and power to ground transfer in line...the stock suspension wastes stock power so a ny added power is also a waste...