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RCannon

GYTR YZ 250 flywheel weight

33 posts in this topic

Mine arrived on Friday. It weighs 8 oz more than stock . I love the feel of the engine with it on. It revs just as fast. It is far easier to ride slowly. For a rough track or trail it would be the hot set-up. For slick conditions it will be perfect. The cost was 99.95 from my local Yamaha dealer. I could have bought it for less here, but shipping would have to be figured in. http://www.parkeryamaha.com/browseproducts/Yamaha-03-05-YZ250-GYT-R-Off-Road-Flywheel.html

It is an entire new flywheel with the weight welded on. It is the same cost, or less, than many of the add-on weights. Overall I am very pleased with the purchase.

Besides, if I get sick of it, I can put the stock flywheel on in 5 minutes.

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Thanks for the review. I plan on picking up a new YZ250 in a few weeks. In the meantime, I'm putting together a list of mods that I may want and a flywheel is one of the items on that list. Since you say that the FWW makes it easier to ride the bike slowly, do you think having one installed would do away with the need for an auto clutch such as the Rekluse? The Rekluse is another item on my list but I had a question mark next to it. Most of my riding would be woods and rocky trails where I may need to ride slower at times. No racing or tracks.

I've been away from dirt bikes for years and am just getting back into it so I'm still trying to grasp the concept of what a flywheel weight does. Does it also affect the ability to wheelie the bike?

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The effect is much less oticeable than the auto clutch. I notice it mostly at low speeds. It has no effect on wheeling the bike. It may wheelie easier as traction is much better.

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You REALLY feel a increase in midrange torque. This mod is really nice. Its worth twice as much as they charge.

The 8oz feels about perfect for the yz 250. Its a very strange sensation. The bike will basically idle along slow enough to ride on a sidewalk.

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i also have teh GYTR flywheel (for about a year now) and have loved it i have my bike about maxed out in performence and this makes it more managable but yet its all still right there ready at the twist of the wrist

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My new bike is basically stock. I did add a pro circuit pipe and silencer. No real reason, I had a Rocky Mountain gift certificate.

The stock engine is incredible. I dont think I could or would recommend a lot except riding it. The engine is that good.

My 97 has had over a thousand bucks in the engine. The 06 blows it away in every regard except top end.

I am in shock at how good this engine is.

Even the flywheel was added out of personal prefrence, not need.

The two "Need" items would be a good front tire and a better chain. I added both of these items before riding th ebike. I dont care for the 739 tire. Stock chains are garbage as well. Thsi saved the cost of new sprokets after the first month.

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What tire did you replace the front stocker with? I heard that Kenda makes some good tires. Is the stock chain that bad?

I was figuring for immediate mods: handguards and skidplate. I'll see after the first ride or two whether I want to do the flywheel. Hard to tell without riding it first. Maybe go with a PC silencer at a later date but stick with the stock pipe.

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I just replaced the front tire. I bought a Dunlop 756rr. That tire has been my favorite of any tire out there.

I also picked up a 742 in the larger 90/100-21 size. We will see if it is any good.

Dont worry much about the pipe and silencer. The stock stuff is excellent. The pro circuit is prettier, but I would have to say the performance is very close to stock.

The pipe test on this forum also confirms this.

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We just got ours as well. I cant wait to try it. Probably the best motor mod is a better muffler.

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We just got ours as well. I cant wait to try it. Probably the best motor mod is a better muffler.

I disagree, the stock muffler/silencer is by far the best all around package for the '01 - '06 YZ250's. Check out some of the testimonials and dyno charts. If you desire specific powerband then a shorty silencer or diff pipe will help. Yamaha did a great job w/this engine!

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Is it difficult to remove the original flywheel? Does it require any special tools?

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i think it requires a flywheel puller, but im not sure i would like to know bcuz i am intersted ina fww myslef

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Is it difficult to remove the original flywheel? Does it require any special tools?

I run a 9 oz weight from Steahly on my 05 YZ 250. I had one on my 01 also. I race desert here in District 37 in Ca. It makes the rocky up hills much easier with less wheel spin. You don't have to worry about stalling as much if you want to lug it a bit while picking through boulder fields. It is probably the best mod you can make, and it is cheap too.

The Steahly replaces the nut that holds the flywheel on. Just bolt on the bar with a square cut out in it and torque it down, it comes with the weight. Then tighten the 4 set screws. It is easy and stays tight. If you need to totally remove the flywheel for one of the other brands of weights you will need a puller. They are pretty cheap from Motion Pro. Oh, Steahly sells a neat little engine lock up tool that replaces the spark plug to make removal and installation very easy too.

I also have a Moose skid plate , Scotts Shark Fin and stearing Damper, Pro Tapers, radiator guards , Cycra hand guards, FMF Fatty pipe and sparky, Moose pipe guard, X ring chain, Clark 3.1 gallon tank, and I have a new TM Designs chain guide waiting to be put on when the stock one gets bent. The YZ is one sweet desert machine!

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The gytr weight is cool. Its an entire new flywheel. No additional spacers are needed for the ignition cover. You do need a flywheel puller. I paid about 10 bucks from Motion pro. The tool fits almost every bike made back into the 70's.

The flywheel nut is difficult to get off without using something air powered. Steahly's lock up tool is handy to have with any flywheel wight. It replaces the spark plug with a specially made piece of plastic to lock up the engine.

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I have done the following with my bike when it comes to performence

Weisco piston

GYTR flywheel

Pro Circiut pipe and silencer

Shaved head and Ported Ex. port

Carb mods....Also alot of jets so my bike is always jetted just right

Full Suspension re-valve (if you can get this done it will make a huge diff)

i run the 756 in the front and back i love them

I would for sure get some suspension work its amazing how much better and longer you can ride when your just flowing with the bike not fighting it

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I have done the following with my bike when it comes to performence

Weisco piston

GYTR flywheel

Pro Circiut pipe and silencer

Shaved head and Ported Ex. port

Carb mods....Also alot of jets so my bike is always jetted just right

Full Suspension re-valve (if you can get this done it will make a huge diff)

i run the 756 in the front and back i love them

I would for sure get some suspension work its amazing how much better and longer you can ride when your just flowing with the bike not fighting it

What's involved with a re-valved suspension? I'm 210 lbs and would like to have my bike set up for my weight? Is this a do it yourself mod or does it have to be taken to a specialist?

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