'14 YZ450F tips wanted

4 replies to this topic
  • Sheriff245

Posted May 23, 2015 - 04:07 AM


I am about to grab a '14 YZ450F with about 35 hours. Previous owner was a friend of mine, always maintained by the dealer (tech is also a friend). I know a bit about the bike in general, rode a '14 250F and loved the ergos and stuff. Been riding Yamahas (mostly 2 strokes) since 2002, been posting regularly in the 2stroke section but new to the 450 section of TT. I don't plan on modding it much except for suspension, tires and a braided front brake hose. Maybe an exhaust for looks if I find a good used deal.


As I want to keep the bike for a long time, are there flaws that I should address or things to look for? I'm basically looking for little tips from people who have had the bike and know its flaws.


Thanks guys.

  • guntoter535

Posted May 23, 2015 - 09:10 AM


Nothing really, setup is different. Go with sag from 90-100mm. Get the 15 lower motor mounts they make a big difference and cost like 20$. Use a 15 ecu map smooth power. Ride and enjoy. Cycra shroud setup shrinks approx 35mm from the front

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  • Monk

Posted May 23, 2015 - 09:36 AM


Lots of things can help make the bike more enjoyable to ride. I could never get the bike to work with anything less then 100mm sag, too much over-steer. I'm sitting around 108mm. Obviously your suspension will make a difference when it comes to setup but the general consensus is most are raising their forks in the triple clamps a few MMs too.

Your height will determine your bar clamp position, I'm running mine in the post holes away from the rider but the clamps rotated back. I run a Scotts stabilizer to which really calms down the front end.

Mapping on the 14 can really help with the off-idle jumpiness. The tuners are virtually dummy proof and easy to learn.

I run my axle 3/4 way back on the swingarm. I also run the standard 13/49 gearing as I ride in the bush.

A Rekluse makes for a easier time in tricky situations but the clutch pull in nice and light so for some it might not be and issue.

  • Doug the head

Posted May 24, 2015 - 12:27 AM


I want to say the impeller shaft needs replaced. And as previously mentioned, 15 motor mounts. All I've done to mine is a revalve, skid plate and radiator braces. Gonna try a small flywheel weight and see if that helps tame it a bit more. Super aggressive motor in my opinion

  • boegey

Posted May 24, 2015 - 03:24 AM


The impeller shaft is fine it's just the shift shaft selector that needs to be changed from the bearing one to the updated one that just has a wheel on a pin is a $20 part and is pretty easy to do yourself
The 250f was the one that needed to impeller shaft replaced aswell the 450 has a different impeller shaft

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