SXR bottom-mid range power mods

East623 · Apr 10, 2016

So far I have a factory dry pipe, tornado filters, and 6 degree timing advance (just the temp bypass) for my 05 SXR. I would like more bottom to mid range power. I'm not too concerned with top end power as I just like to free ride and jump waves. What would be a good next step without modifying the engine heavily? I would prefer to stay on pump gas as much as I ride and where my lake house is there is no where to get anything higher than 93. Should I get an 80mm reduction cone from a 750sx? Is that a direct fit or is there some modifying needed? What about v force reed blocks? Just looking for good opinions without destroying my wallet. What do I have to do to remove the reduction cone to replace with a larger one? Thanks guys!

cudaben · Apr 10, 2016

what impeller do you have?

user_error · Apr 10, 2016

bore the nozzle to 80-82mm and trade the dry pipe for a wet pipe

East623 · Apr 10, 2016

Stock impeller. I most likely won't be trading this pipe. I like its design more coming from a strong motocross background I don't like the tuneable pipe idea. Has anyone put an 80mm 750SX nozzle on the SXR? Is it an easy swap?

user_error · Apr 10, 2016

its a bolt on piece, same shape as the oem nozzle just slightly larger. You can get good bottom end with a 9/17 big hub skat trak prop, impros could repitch your stock prop as well.

Parkersxr · Apr 10, 2016

Lightened oem flywheel , bore stock carbs as user said big Hub prop and some reeds that girl will wake up
These will wake up that motor without breaking you wallet
#zero flywheel like 90 bucks or something
Group k carbs and stock head nod isn't bad either like a 100 bucks
And they v force reeds I haven't priced in a while but worth every penny
All reliable mods and pump gas achievable

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aqualocos · Apr 13, 2016

A good next step is to lose the drypipe and go with a wetpipe dont go with a drypip in the surf and freeride...you cylinder wil crack...if you have a girdled head the long bolds wil snap the drypipe is just to heavy for heavy jumps...i have a drypipe and a wetpipe and now the drypipe is on the shelf i hate that,i love the brute power of the drypipe but wetpipe is much better in surf and freeride....sorry for this disappointing answer...

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aqualocos · Apr 13, 2016

the best you can do to that wake that thing up is going for a igni pro ignition the best thing i ever did !! It wil rip your arms out

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Parkersxr · Apr 13, 2016

aqualocos said:
the best you can do to that wake that thing up is going for a igni pro ignition the best thing i ever did !! It wil rip your arms out

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Not to thread jack at all but that's kinda the point in at ? Is it seriously that good ? Can u explain a little how it works ? Is it simply plug and play ? Jetting changing etc ? Thank u

East623 · Apr 14, 2016

Parkersxr said:
Not to thread jack at all but that's kinda the point in at ? Is it seriously that good ? Can u explain a little how it works ? Is it simply plug and play ? Jetting changing etc ? Thank u

You're not thread jacking a bit bud. I have the same questions haha. What fuel are you having to run with that igntion?

East623 · Apr 14, 2016

aqualocos said:
A good next step is to lose the drypipe and go with a wetpipe dont go with a drypip in the surf and freeride...you cylinder wil crack...if you have a girdled head the long bolds wil snap the drypipe is just to heavy for heavy jumps...i have a drypipe and a wetpipe and now the drypipe is on the shelf i hate that,i love the brute power of the drypipe but wetpipe is much better in surf and freeride....sorry for this disappointing answer...

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I'm a descent welder and a training machinist. I've heard about this problem and I think i have a solution. I'll machine new mounts for the pipe that connect it to the cylinder head to disperse the weight over three cylinder head bolts instead of two. that should solve that problem just fine. Right now I'm not jumping anything big enough for it to matter but I plan to soon.