Making a '14 and up YZ450 lighter?

At 8 lb/gal, optimizing your fuel fill is the best bet.

 

After that, make sure your seat doesn't get water-logged when you wash the bike.

 

 

The fork springs on these bikes are known to be oversized and very heavy.  Putting in an older style spring with a spacer can drop a lb maybe.

 

Suzuki's are about the best cornering and most nimble feeling bikes, and they're also some of the heaviest.  Focus on setup and geometry.  A 240 lb bike versus a 245 lb bike will not get you to the finish line any faster, only to the bottom of your bank account faster.

 

 

Oh, and yeah, the KTM's do vibrate like crazy.  Didn't realize it until I rode one back to back with my YZF.  The difference is nuts.

KTM's are lighter because they are smaller, and have lightweight vastly inferior forks, and the vibration is no charge.

Believe it or not the tires out there vary by up to a couple pounds and they are unsprung weight which will have the biggest impact on handling. 

Does anyone have a link for a good thread with tires and their weights? 

I have weighed quite a few tires and have found that the DUnlop Geomax are very light.

 

Your brand new bike is going to come with ultra thin tubes which although being the lightest thing out there are going to have to be changed for ultra heavy duty tubes, mousse, tubliss, or Tireballs if you are going to ride offroad.

 

 I just saved 5 pounds of unsprung weight by switching from ultra heavy duty tubes to Tireballs. Initially I switched because I was tired of getting flats, but was amazed when I weighed the tire balls against the Michelin ultra heavy duty tubes.

I believe I saved around 3.5 pounds in the back and 1.5 pounds in the front. I will weigh again next time I wear out a tire and record the weights tot he nearest tenth of a pound

 

 

How long do those last? What psi do they feel similar to?

The tubes that came in that bike were 100% worthless. They flatted out from CHAFING against the inside of the sidewall....

Your brand new bike is going to come with ultra thin tubes which although being the lightest thing out there are going to have to be changed for ultra heavy duty tubes, mousse, tubliss, or Tireballs if you are going to ride offroad.

 

 

For the most part, there are the thin, standard weight inner tubes, and the heavy ones, which are nearly as heavy as some tires, and so thick they won't fold into anything much smaller than a shoe box.  Except for Bridgestone.  They make a heavy duty tube that's about half as thick and heavy as the others, but still very tough and resilient, and much cheaper than mousse or tire ball solutions.  They're quite popular with desert racers in southern SoCal. 

For the most part, there are the thin, standard weight inner tubes, and the heavy ones, which are nearly as heavy as some tires, and so thick they won't fold into anything much smaller than a shoe box.  Except for Bridgestone.  They make a heavy duty tube that's about half as thick and heavy as the others, but still very tough and resilient, and much cheaper than mousse or tire ball solutions.  They're quite popular with desert racers in southern SoCal. 

Correctomondo!

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