21 yz250f

AH387
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AH387 10/29/2020 4:47am
10/29/2020 4:47am
XLJeh wrote:
Definitely after one of those or one like it but I meant the box beneath the air filter. The port hole would have to make a...
Definitely after one of those or one like it but I meant the box beneath the air filter. The port hole would have to make a difference too i imagine.
Oh ya, my bad. Ya the new airboot looks much more direct too. If you do that and the cover, I'm sure you'll get the 19 flowing.
1
sandtrack315
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sandtrack315 10/29/2020 5:01am
10/29/2020 5:01am
LKHill wrote:
I think you are confusing bottom power and explosiveness.
AH387 wrote:
Point being that MXA said that the 21 comes out of turns harder and wheelies more than the 20.Whereas the 20 is smoother and easier to...
Point being that MXA said that the 21 comes out of turns harder and wheelies more than the 20.Whereas the 20 is smoother and easier to come out of corners. Vital said the exact opposite. The 20 had so much low-end that it just wanted to wheelie out, while 21 is smoother and did not wheelie, it stayed put. And Swapmoto's test said something similar to Ping.
I have never had a problem on the 20 wheeling out of turns. Maybe the MXA guys are not carrying enough momentum through turns...

I think Keefer's take seems reasonable, in that they gave up a tiny tiny bit on the bottom but a bit on the mid-top. The 20 does just sort of give up and it forces you to shift early.

Keefer also said the bike handles pretty much the same, but is a bit better on lean in. That's the worst aspect of the 20, so I am glad to hear they addressed that.

I still only have 30 hours on my 20, so I am going to wait and see that the 2022 Honda is like and then decide.
1
motomike137
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motomike137 10/29/2020 5:10am
10/29/2020 5:10am
tek14 wrote:
View this post on Instagram Let’s take a look at some of the differences between the 2021 @yamahamotorusa YZ250F and the prior year model. First up...
I wonder if the 2021 airbox changes are things the Star team developed?
2
Baton Rouge 10/29/2020 5:16am
10/29/2020 5:16am
snape99 wrote:
I got this airbox cover for my 21 model. Can’t wait to ride bike [img]https://p.vitalmx.com/photos/forums/2020/10/28/456579/s1200_8E91FE86_D940_46CF_9C63_41726DD9AD10.jpg[/img]
I got this airbox cover for my 21 model. Can’t wait to ride bike
Ohhhhhhhh sweet jesus ! I´m on board to buy the same thing for my 2021 YZF too.

I emailed Flavio at CRM but i do hesitate between the Nihilo cover, Slaterskins cover and CRM cover (yours). Anybody out here tried the Nihilo maybe ? It is the one ride by Clubmx.

Can you tell me as soon as possible your first impressions riding that CRM cover airbox ? And what other mods do you have on your bike ?

Thx in advance
1

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Motofinne
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Motofinne 10/29/2020 5:18am
10/29/2020 5:18am
The changes makes sense. I would've traded the a bit of the bottom end for more top end on my 2020 YZ250F in a heartbeat!
1
Timo_2824
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Timo_2824 10/29/2020 5:27am
10/29/2020 5:27am
I'm 5'7 and have been on the 450 for 2 years. The newest generation (2018 450, 2019 250)actually fits shorter riders better. The seat is low, 1.5 inches shorter at the back of the seat compared to my 07 250F. If you get one just move the handlebars to the rear hole with the clamps forward. I've actually had fewer oh shit I stepped in a hole moments since I've had this bike. And don't worry about people saying it's wide, I've never noticed it. These reverse engines are pretty awesome, especially under 1/2 throttle which you'll never see on a dyno.
2
snape99
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snape99 10/29/2020 7:05am
10/29/2020 7:05am
snape99 wrote:
I got this airbox cover for my 21 model. Can’t wait to ride bike [img]https://p.vitalmx.com/photos/forums/2020/10/28/456579/s1200_8E91FE86_D940_46CF_9C63_41726DD9AD10.jpg[/img]
I got this airbox cover for my 21 model. Can’t wait to ride bike
Baton Rouge wrote:
Ohhhhhhhh sweet jesus ! I´m on board to buy the same thing for my 2021 YZF too. I emailed Flavio at CRM but i do hesitate...
Ohhhhhhhh sweet jesus ! I´m on board to buy the same thing for my 2021 YZF too.

I emailed Flavio at CRM but i do hesitate between the Nihilo cover, Slaterskins cover and CRM cover (yours). Anybody out here tried the Nihilo maybe ? It is the one ride by Clubmx.

Can you tell me as soon as possible your first impressions riding that CRM cover airbox ? And what other mods do you have on your bike ?

Thx in advance
Yep will do 👍
3
yak651
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yak651 10/29/2020 7:55am
10/29/2020 7:55am
Timo_2824 wrote:
I'm 5'7 and have been on the 450 for 2 years. The newest generation (2018 450, 2019 250)actually fits shorter riders better. The seat is low...
I'm 5'7 and have been on the 450 for 2 years. The newest generation (2018 450, 2019 250)actually fits shorter riders better. The seat is low, 1.5 inches shorter at the back of the seat compared to my 07 250F. If you get one just move the handlebars to the rear hole with the clamps forward. I've actually had fewer oh shit I stepped in a hole moments since I've had this bike. And don't worry about people saying it's wide, I've never noticed it. These reverse engines are pretty awesome, especially under 1/2 throttle which you'll never see on a dyno.
I'm 5'6" and have a '19 YZ250f. I don't notice the width or size much when riding. I had a '15 and '16 also, with those I would always get bruises on my knees (I know my bad, no knee pads/braces), I believe it was from the frame spars, I don't get that on my '19.

Guy near me has a '20 with 9 hours that is really clean and will sell for $6400, debating between that or the difference in price to get a '21....
Ryan625
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Ryan625 10/29/2020 8:04am
10/29/2020 8:04am
Pirate421 wrote:
How did the power feel compared to your yz250? I haven’t ridden a 250f since 2011 and I know they have changed a lot since then...
How did the power feel compared to your yz250? I haven’t ridden a 250f since 2011 and I know they have changed a lot since then but I’ve been on 250 2ts since that bike.
Ryan625 wrote:
I got the chance to put in two good motos on a demo today. I am a 250 2 stroke guy through and through, but I...
I got the chance to put in two good motos on a demo today. I am a 250 2 stroke guy through and through, but I fell in love with the 2021 yz250f. I’ll be picking one up as soon as I can
Chris_Buehler wrote:
Nice. What's your skill level and weight if you don't mind me asking. I'm over 200lbs but I keep toying with the idea of stepping down...
Nice. What's your skill level and weight if you don't mind me asking. I'm over 200lbs but I keep toying with the idea of stepping down to a 250f
Vet A, 25+ B range depending on the day lol
I’m 175# and have an aggressive style so I tend to ride a 125 best. The yz250f felt strong everywhere. I ended up picking up a 2020 for a good deal then broke my arm days later on my 300xcw 😂🤦🏻‍♂️
AH387
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AH387 10/29/2020 8:29am
10/29/2020 8:29am
They are the exact same dimensions. It just is more noticeable on the 450 because of the overall weight and weight placement. The 250F could be a little smaller/sleeker and I wouldn't mind but after you ride it for a while, you don't really notice until you hop on another brand. The same kind of applies to the 450 guys.
dedi684
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dedi684 10/29/2020 8:40am
10/29/2020 8:40am
AH387 wrote:
They are the exact same dimensions. It just is more noticeable on the 450 because of the overall weight and weight placement. The 250F could be...
They are the exact same dimensions. It just is more noticeable on the 450 because of the overall weight and weight placement. The 250F could be a little smaller/sleeker and I wouldn't mind but after you ride it for a while, you don't really notice until you hop on another brand. The same kind of applies to the 450 guys.
I hopped on one at the demos and first thing i noticed was the shrouds were right where my knees go on my yz 250 2s
1
AH387
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AH387 10/29/2020 8:45am
10/29/2020 8:45am
dedi684 wrote:
I hopped on one at the demos and first thing i noticed was the shrouds were right where my knees go on my yz 250 2s
Yep. Going to a 2stroke you can feel the difference too. But like I said, you get used to it. Maybe the next gen they can figure out a way to make that a little better ergonomically, but also needing the airbox/volume, I can see how it is easier said than done lol.
mxengineer1
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mxengineer1 10/29/2020 9:53am
10/29/2020 9:53am
The width of the YZ250F upper shrouds is mostly noticeable when just sitting on the bike but tends to be much less noticeable once riding. The front upper part of the shrouds (where in intake vents are) are a little wider on the YZ250F compared to the other bikes. The mid section of the YZ250F is relatively thin. The '21 YZ250F is a very fun bike and such broad power for a 250F...




6
Stevo683
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Stevo683 10/29/2020 10:56am
10/29/2020 10:56am
zeromarine wrote:
Guys that have them how do you like the bars in the front position, I read they come that way. Or are you moving them to...
Guys that have them how do you like the bars in the front position, I read they come that way. Or are you moving them to the back holes with the mounts rotated forward like the 2020 model? Thanks
mxengineer1 wrote:
I got to ride a new 2021 YZ250F last week. I liked the bars in the forward position (I am 6'2" and 190 lbs) - opened...
I got to ride a new 2021 YZ250F last week. I liked the bars in the forward position (I am 6'2" and 190 lbs) - opened up the rider triangle. Easy enough to move them back.

How does the 21 YZ250F work? For me the engine is noticeably stronger everywhere (especially up top) with a free and quick revving feel and 250F class leading partial throttle torque feel, suspension is firmer with less chassis pitch and a more controlled setting, the shrouds still feel wide sitting on the bike but not so noticeable while riding, and it still makes lots of noise from the intake and exhaust.

I did post a more detailed review on ThumperTalk if you are interested....https://thumpertalk.com/forums/topic/1351946-2021-yz250f-initial-ride-i…

Will be interesting to hear how the new bike works for magazine guys. It sure is blue!


Let me know when you are ready to sell it!
Vet57
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Vet57 10/30/2020 4:33am
10/30/2020 4:33am
I always use the TA Power Flow kit..pricey but very much worth it.

4
yak651
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yak651 10/30/2020 5:51am
10/30/2020 5:51am
Vet57 wrote:
I always use the TA Power Flow kit..pricey but very much worth it. [img]https://p.vitalmx.com/photos/forums/2020/10/30/456795/s1200_X001_Y035.jpg[/img]
I always use the TA Power Flow kit..pricey but very much worth it.

I used the no toil kit. Not as pretty but accomplished the same thing (plastic cage instead of aluminum)
yak651
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yak651 10/30/2020 5:54am
10/30/2020 5:54am
Vet57 wrote:
I always use the TA Power Flow kit..pricey but very much worth it. [img]https://p.vitalmx.com/photos/forums/2020/10/30/456795/s1200_X001_Y035.jpg[/img]
I always use the TA Power Flow kit..pricey but very much worth it.

yak651 wrote:
I used the no toil kit. Not as pretty but accomplished the same thing (plastic cage instead of aluminum)

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sandtrack315
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sandtrack315 10/30/2020 7:08am
10/30/2020 7:08am
Vet57 wrote:
I always use the TA Power Flow kit..pricey but very much worth it. [img]https://p.vitalmx.com/photos/forums/2020/10/30/456795/s1200_X001_Y035.jpg[/img]
I always use the TA Power Flow kit..pricey but very much worth it.

yak651 wrote:
I used the no toil kit. Not as pretty but accomplished the same thing (plastic cage instead of aluminum)
yak651 wrote:
[img]https://p.vitalmx.com/photos/forums/2020/10/30/456803/s1200_44641DF6_CC3A_4D87_BC41_AF8DBF9B9486.jpg[/img]

I like the twin air one because you can easily get down in the airbox and clean it / make sure no dirt fell off your dirty filter when you took it off.

One thing I am worried about with the new air box is that any dirt that comes off your air filter during a change now drops directly into your intake...
3
wideopen198 10/30/2020 9:19am
10/30/2020 9:19am
yak651 wrote:
I used the no toil kit. Not as pretty but accomplished the same thing (plastic cage instead of aluminum)
yak651 wrote:
[img]https://p.vitalmx.com/photos/forums/2020/10/30/456803/s1200_44641DF6_CC3A_4D87_BC41_AF8DBF9B9486.jpg[/img]

sandtrack315 wrote:
I like the twin air one because you can easily get down in the airbox and clean it / make sure no dirt fell off your...
I like the twin air one because you can easily get down in the airbox and clean it / make sure no dirt fell off your dirty filter when you took it off.

One thing I am worried about with the new air box is that any dirt that comes off your air filter during a change now drops directly into your intake...
Yup, but as long as you don't open the throttle you can get it out with a vacuum cleaner
RedRider785
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RedRider785 10/30/2020 12:02pm
10/30/2020 12:02pm
yak651 wrote:
[img]https://p.vitalmx.com/photos/forums/2020/10/30/456803/s1200_44641DF6_CC3A_4D87_BC41_AF8DBF9B9486.jpg[/img]

sandtrack315 wrote:
I like the twin air one because you can easily get down in the airbox and clean it / make sure no dirt fell off your...
I like the twin air one because you can easily get down in the airbox and clean it / make sure no dirt fell off your dirty filter when you took it off.

One thing I am worried about with the new air box is that any dirt that comes off your air filter during a change now drops directly into your intake...
wideopen198 wrote:
Yup, but as long as you don't open the throttle you can get it out with a vacuum cleaner
Yes, I have a small tube taped to the end of my shopvac hose for this. I have the same concern about the new intake design, as I have the TA Powerflow kit on my 19' and once every few filter changes a spec of dirt drops directly into the venturi.

Does anyone know if the 21' air boot will fit on the 19'-20'? Will there be a performance advantage without having the new head?
I realize new mapping would be required.
1
tek14
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tek14 10/30/2020 12:26pm
10/30/2020 12:26pm
Vet57 wrote:
I always use the TA Power Flow kit..pricey but very much worth it. [img]https://p.vitalmx.com/photos/forums/2020/10/30/456795/s1200_X001_Y035.jpg[/img]
I always use the TA Power Flow kit..pricey but very much worth it.

yak651 wrote:
I used the no toil kit. Not as pretty but accomplished the same thing (plastic cage instead of aluminum)
yak651 wrote:
[img]https://p.vitalmx.com/photos/forums/2020/10/30/456803/s1200_44641DF6_CC3A_4D87_BC41_AF8DBF9B9486.jpg[/img]

1. Can you use new "flat" airfilters with No Toil one if you just use that base piece and put stock cage top of flat filter?

2. Anyone has cut rear number plates like Star Yamaha? I got my boot stuck on side of numberplate and was thinking to cut them.
tek14
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tek14 10/30/2020 12:28pm
10/30/2020 12:28pm
RedRider785 wrote:
Yes, I have a small tube taped to the end of my shopvac hose for this. I have the same concern about the new intake design...
Yes, I have a small tube taped to the end of my shopvac hose for this. I have the same concern about the new intake design, as I have the TA Powerflow kit on my 19' and once every few filter changes a spec of dirt drops directly into the venturi.

Does anyone know if the 21' air boot will fit on the 19'-20'? Will there be a performance advantage without having the new head?
I realize new mapping would be required.
I got reply that new 21 air boot will fit 20 model.
1
Myke
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Myke 10/30/2020 1:21pm
10/30/2020 1:21pm
snape99 wrote:
I got this airbox cover for my 21 model. Can’t wait to ride bike [img]https://p.vitalmx.com/photos/forums/2020/10/28/456579/s1200_8E91FE86_D940_46CF_9C63_41726DD9AD10.jpg[/img]
I got this airbox cover for my 21 model. Can’t wait to ride bike
Baton Rouge wrote:
Ohhhhhhhh sweet jesus ! I´m on board to buy the same thing for my 2021 YZF too. I emailed Flavio at CRM but i do hesitate...
Ohhhhhhhh sweet jesus ! I´m on board to buy the same thing for my 2021 YZF too.

I emailed Flavio at CRM but i do hesitate between the Nihilo cover, Slaterskins cover and CRM cover (yours). Anybody out here tried the Nihilo maybe ? It is the one ride by Clubmx.

Can you tell me as soon as possible your first impressions riding that CRM cover airbox ? And what other mods do you have on your bike ?

Thx in advance
snape99 wrote:
Yep will do 👍
Nice!, but me being lazy I see alot of filter maintenance.

If you have a stock motor I wonder how much the extra air flow from that translates to HP?

Also with that cover the filter will get dirty quick, does that defeat the airflow benefit?
1
XLJeh
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XLJeh 10/30/2020 1:28pm
10/30/2020 1:28pm
yak651 wrote:
I used the no toil kit. Not as pretty but accomplished the same thing (plastic cage instead of aluminum)
yak651 wrote:
[img]https://p.vitalmx.com/photos/forums/2020/10/30/456803/s1200_44641DF6_CC3A_4D87_BC41_AF8DBF9B9486.jpg[/img]

tek14 wrote:
1. Can you use new "flat" airfilters with No Toil one if you just use that base piece and put stock cage top of flat filter...
1. Can you use new "flat" airfilters with No Toil one if you just use that base piece and put stock cage top of flat filter?

2. Anyone has cut rear number plates like Star Yamaha? I got my boot stuck on side of numberplate and was thinking to cut them.
How do these make any difference then whats in there? do you still use the cover over top the filter or does it just sit in open air and the cage holds filter in place?
Zycki11
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Zycki11 10/30/2020 1:33pm
10/30/2020 1:33pm
Less restrictive air due to the back screen being removed. It had a roughly 1-2 horsepower and is noticeable
2
Timo_2824
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Timo_2824 10/30/2020 6:48pm
10/30/2020 6:48pm
Zycki11 wrote:
Less restrictive air due to the back screen being removed. It had a roughly 1-2 horsepower and is noticeable
Hahaha 1 to 2 hp from a filter.... my bobble head added 10 hp when I bolted it to my handlebars!
1
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skypig
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skypig 10/31/2020 3:21am
10/31/2020 3:21am
Zycki11 wrote:
Less restrictive air due to the back screen being removed. It had a roughly 1-2 horsepower and is noticeable
Timo_2824 wrote:
Hahaha 1 to 2 hp from a filter.... my bobble head added 10 hp when I bolted it to my handlebars!
Can you imagine if Yamaha finds out?
They might do it!!
2
sandtrack315
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sandtrack315 10/31/2020 3:24am
10/31/2020 3:24am
yak651 wrote:
[img]https://p.vitalmx.com/photos/forums/2020/10/30/456803/s1200_44641DF6_CC3A_4D87_BC41_AF8DBF9B9486.jpg[/img]

sandtrack315 wrote:
I like the twin air one because you can easily get down in the airbox and clean it / make sure no dirt fell off your...
I like the twin air one because you can easily get down in the airbox and clean it / make sure no dirt fell off your dirty filter when you took it off.

One thing I am worried about with the new air box is that any dirt that comes off your air filter during a change now drops directly into your intake...
wideopen198 wrote:
Yup, but as long as you don't open the throttle you can get it out with a vacuum cleaner
For sure, I wish you could see down there and confirm you got everything, though.
1
17judd17
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17judd17 11/4/2020 12:20am
11/4/2020 12:20am Edited Date/Time 11/4/2020 12:22am
Zycki11 wrote:
Less restrictive air due to the back screen being removed. It had a roughly 1-2 horsepower and is noticeable
Timo_2824 wrote:
Hahaha 1 to 2 hp from a filter.... my bobble head added 10 hp when I bolted it to my handlebars!
skypig wrote:
Can you imagine if Yamaha finds out?
They might do it!!
1-2 Hp is not far off a realistic gain with the TA filter set up and CRM airbox. I tested them on a 21 a couple of days ago.
9

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